/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/heap-manipulation/dancing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 17:13:08,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 17:13:08,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 17:13:08,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 17:13:08,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 17:13:08,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 17:13:08,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 17:13:08,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 17:13:08,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 17:13:08,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 17:13:08,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 17:13:08,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 17:13:08,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 17:13:08,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 17:13:08,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 17:13:08,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 17:13:08,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 17:13:08,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 17:13:08,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 17:13:08,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 17:13:08,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 17:13:08,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 17:13:08,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 17:13:08,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 17:13:08,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 17:13:08,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 17:13:08,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 17:13:08,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 17:13:08,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 17:13:08,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 17:13:08,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 17:13:08,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 17:13:08,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 17:13:08,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 17:13:08,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 17:13:08,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 17:13:08,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 17:13:08,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 17:13:08,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 17:13:08,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 17:13:08,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 17:13:08,621 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 17:13:08,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 17:13:08,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 17:13:08,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 17:13:08,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 17:13:08,673 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 17:13:08,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 17:13:08,674 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 17:13:08,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 17:13:08,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 17:13:08,674 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 17:13:08,676 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 17:13:08,676 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 17:13:08,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 17:13:08,677 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 17:13:08,677 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 17:13:08,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 17:13:08,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 17:13:08,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 17:13:08,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:13:08,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 17:13:08,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 17:13:08,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 17:13:08,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 17:13:08,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 17:13:08,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 17:13:09,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 17:13:09,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 17:13:09,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 17:13:09,247 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 17:13:09,251 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 17:13:09,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dancing.i [2020-12-23 17:13:09,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/48e696e7d/f19f62e00c494301a02f28e955d743fe/FLAG68f03e1b5 [2020-12-23 17:13:10,093 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 17:13:10,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dancing.i [2020-12-23 17:13:10,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/48e696e7d/f19f62e00c494301a02f28e955d743fe/FLAG68f03e1b5 [2020-12-23 17:13:10,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/48e696e7d/f19f62e00c494301a02f28e955d743fe [2020-12-23 17:13:10,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 17:13:10,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 17:13:10,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 17:13:10,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 17:13:10,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 17:13:10,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:13:10" (1/1) ... [2020-12-23 17:13:10,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33237b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:13:10, skipping insertion in model container [2020-12-23 17:13:10,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:13:10" (1/1) ... [2020-12-23 17:13:10,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 17:13:10,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 17:13:10,639 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/heap-manipulation/dancing.i[938,951] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem6,],base],StructAccessExpression[IdentifierExpression[#t~mem6,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem9,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[#t~mem9,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem12,],base],StructAccessExpression[IdentifierExpression[#t~mem12,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem14,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[#t~mem14,],offset]]]] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~list~0,],L] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~list~0,],R] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~n~0,],base],StructAccessExpression[IdentifierExpression[~n~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~n~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~n~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~tail~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~tail~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2020-12-23 17:13:10,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:13:10,776 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 17:13:10,791 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/heap-manipulation/dancing.i[938,951] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem6,],base],StructAccessExpression[IdentifierExpression[#t~mem6,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem9,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[#t~mem9,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem12,],base],StructAccessExpression[IdentifierExpression[#t~mem12,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem14,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[#t~mem14,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#list~0,],base],StructAccessExpression[IdentifierExpression[~#list~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#list~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~#list~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~n~0,],base],StructAccessExpression[IdentifierExpression[~n~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~n~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~n~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~tail~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~tail~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2020-12-23 17:13:10,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:13:10,949 INFO L208 MainTranslator]: Completed translation [2020-12-23 17:13:10,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:13:10 WrapperNode [2020-12-23 17:13:10,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 17:13:10,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 17:13:10,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 17:13:10,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 17:13:10,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:13:10" (1/1) ... [2020-12-23 17:13:11,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:13:10" (1/1) ... [2020-12-23 17:13:11,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 17:13:11,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 17:13:11,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 17:13:11,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 17:13:11,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:13:10" (1/1) ... [2020-12-23 17:13:11,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:13:10" (1/1) ... [2020-12-23 17:13:11,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:13:10" (1/1) ... [2020-12-23 17:13:11,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:13:10" (1/1) ... [2020-12-23 17:13:11,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:13:10" (1/1) ... [2020-12-23 17:13:11,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:13:10" (1/1) ... [2020-12-23 17:13:11,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:13:10" (1/1) ... [2020-12-23 17:13:11,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 17:13:11,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 17:13:11,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 17:13:11,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 17:13:11,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:13:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:13:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure is_list_containing_x [2020-12-23 17:13:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure is_list_containing_x [2020-12-23 17:13:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 17:13:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 17:13:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 17:13:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 17:13:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 17:13:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 17:13:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 17:13:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 17:13:11,901 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 17:13:11,902 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-23 17:13:11,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:13:11 BoogieIcfgContainer [2020-12-23 17:13:11,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 17:13:11,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 17:13:11,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 17:13:11,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 17:13:11,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:13:10" (1/3) ... [2020-12-23 17:13:11,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e19742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:13:11, skipping insertion in model container [2020-12-23 17:13:11,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:13:10" (2/3) ... [2020-12-23 17:13:11,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e19742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:13:11, skipping insertion in model container [2020-12-23 17:13:11,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:13:11" (3/3) ... [2020-12-23 17:13:11,916 INFO L111 eAbstractionObserver]: Analyzing ICFG dancing.i [2020-12-23 17:13:11,922 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 17:13:11,928 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 45 error locations. [2020-12-23 17:13:11,948 INFO L253 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2020-12-23 17:13:11,972 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 17:13:11,972 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 17:13:11,972 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 17:13:11,972 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 17:13:11,973 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 17:13:11,973 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 17:13:11,976 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 17:13:11,976 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 17:13:12,000 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2020-12-23 17:13:12,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-23 17:13:12,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:12,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-23 17:13:12,009 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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:12,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:12,016 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2020-12-23 17:13:12,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:12,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624463968] [2020-12-23 17:13:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:12,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624463968] [2020-12-23 17:13:12,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:13:12,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:13:12,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111313258] [2020-12-23 17:13:12,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:13:12,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:12,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:13:12,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:13:12,237 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 3 states. [2020-12-23 17:13:12,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:12,414 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-12-23 17:13:12,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:13:12,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-23 17:13:12,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:12,427 INFO L225 Difference]: With dead ends: 105 [2020-12-23 17:13:12,428 INFO L226 Difference]: Without dead ends: 103 [2020-12-23 17:13:12,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:13:12,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-23 17:13:12,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-12-23 17:13:12,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-23 17:13:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2020-12-23 17:13:12,481 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 3 [2020-12-23 17:13:12,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:12,482 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2020-12-23 17:13:12,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:13:12,482 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2020-12-23 17:13:12,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-23 17:13:12,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:12,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-23 17:13:12,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 17:13:12,483 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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:12,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:12,485 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2020-12-23 17:13:12,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:12,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444599835] [2020-12-23 17:13:12,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:12,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:12,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444599835] [2020-12-23 17:13:12,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:13:12,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:13:12,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945546857] [2020-12-23 17:13:12,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:13:12,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:12,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:13:12,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:13:12,544 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand 3 states. [2020-12-23 17:13:12,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:12,674 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2020-12-23 17:13:12,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:13:12,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-23 17:13:12,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:12,677 INFO L225 Difference]: With dead ends: 101 [2020-12-23 17:13:12,677 INFO L226 Difference]: Without dead ends: 101 [2020-12-23 17:13:12,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:13:12,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-23 17:13:12,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-12-23 17:13:12,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-23 17:13:12,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-12-23 17:13:12,690 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 3 [2020-12-23 17:13:12,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:12,691 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-12-23 17:13:12,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:13:12,695 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-12-23 17:13:12,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 17:13:12,696 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:12,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:12,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 17:13:12,697 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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:12,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:12,698 INFO L82 PathProgramCache]: Analyzing trace with hash 59267633, now seen corresponding path program 1 times [2020-12-23 17:13:12,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:12,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509598007] [2020-12-23 17:13:12,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:12,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:12,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509598007] [2020-12-23 17:13:12,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:13:12,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:13:12,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18158933] [2020-12-23 17:13:12,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:13:12,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:12,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:13:12,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:13:12,756 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 3 states. [2020-12-23 17:13:12,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:12,938 INFO L93 Difference]: Finished difference Result 169 states and 190 transitions. [2020-12-23 17:13:12,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:13:12,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-23 17:13:12,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:12,941 INFO L225 Difference]: With dead ends: 169 [2020-12-23 17:13:12,942 INFO L226 Difference]: Without dead ends: 169 [2020-12-23 17:13:12,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:13:12,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-12-23 17:13:12,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 99. [2020-12-23 17:13:12,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-23 17:13:12,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2020-12-23 17:13:12,955 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 8 [2020-12-23 17:13:12,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:12,956 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2020-12-23 17:13:12,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:13:12,956 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2020-12-23 17:13:12,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 17:13:12,957 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:12,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:12,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 17:13:12,957 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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:12,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:12,958 INFO L82 PathProgramCache]: Analyzing trace with hash 59267634, now seen corresponding path program 1 times [2020-12-23 17:13:12,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:12,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797276299] [2020-12-23 17:13:12,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:13,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:13,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797276299] [2020-12-23 17:13:13,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:13:13,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:13:13,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310312281] [2020-12-23 17:13:13,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:13:13,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:13,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:13:13,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:13:13,046 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 3 states. [2020-12-23 17:13:13,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:13,244 INFO L93 Difference]: Finished difference Result 169 states and 189 transitions. [2020-12-23 17:13:13,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:13:13,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-23 17:13:13,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:13,249 INFO L225 Difference]: With dead ends: 169 [2020-12-23 17:13:13,250 INFO L226 Difference]: Without dead ends: 169 [2020-12-23 17:13:13,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:13:13,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-12-23 17:13:13,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 97. [2020-12-23 17:13:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-23 17:13:13,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 109 transitions. [2020-12-23 17:13:13,277 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 109 transitions. Word has length 8 [2020-12-23 17:13:13,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:13,278 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 109 transitions. [2020-12-23 17:13:13,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:13:13,279 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 109 transitions. [2020-12-23 17:13:13,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 17:13:13,279 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:13,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:13,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 17:13:13,280 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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:13,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:13,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1124495229, now seen corresponding path program 1 times [2020-12-23 17:13:13,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:13,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905607525] [2020-12-23 17:13:13,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:13,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:13,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905607525] [2020-12-23 17:13:13,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:13:13,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:13:13,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927107422] [2020-12-23 17:13:13,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:13:13,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:13,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:13:13,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:13:13,379 INFO L87 Difference]: Start difference. First operand 97 states and 109 transitions. Second operand 5 states. [2020-12-23 17:13:13,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:13,474 INFO L93 Difference]: Finished difference Result 180 states and 205 transitions. [2020-12-23 17:13:13,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:13:13,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 17:13:13,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:13,478 INFO L225 Difference]: With dead ends: 180 [2020-12-23 17:13:13,478 INFO L226 Difference]: Without dead ends: 180 [2020-12-23 17:13:13,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:13:13,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-23 17:13:13,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 141. [2020-12-23 17:13:13,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-23 17:13:13,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 194 transitions. [2020-12-23 17:13:13,488 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 194 transitions. Word has length 10 [2020-12-23 17:13:13,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:13,489 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 194 transitions. [2020-12-23 17:13:13,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:13:13,489 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 194 transitions. [2020-12-23 17:13:13,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 17:13:13,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:13,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:13,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 17:13:13,490 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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:13,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:13,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1121620373, now seen corresponding path program 1 times [2020-12-23 17:13:13,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:13,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232890704] [2020-12-23 17:13:13,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:13,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232890704] [2020-12-23 17:13:13,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:13:13,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:13:13,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115556863] [2020-12-23 17:13:13,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:13:13,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:13,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:13:13,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:13:13,620 INFO L87 Difference]: Start difference. First operand 141 states and 194 transitions. Second operand 4 states. [2020-12-23 17:13:13,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:13,732 INFO L93 Difference]: Finished difference Result 140 states and 192 transitions. [2020-12-23 17:13:13,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:13:13,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 17:13:13,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:13,734 INFO L225 Difference]: With dead ends: 140 [2020-12-23 17:13:13,734 INFO L226 Difference]: Without dead ends: 140 [2020-12-23 17:13:13,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:13:13,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-23 17:13:13,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-12-23 17:13:13,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-23 17:13:13,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 192 transitions. [2020-12-23 17:13:13,750 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 192 transitions. Word has length 10 [2020-12-23 17:13:13,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:13,750 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 192 transitions. [2020-12-23 17:13:13,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:13:13,750 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 192 transitions. [2020-12-23 17:13:13,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 17:13:13,752 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:13,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:13,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 17:13:13,757 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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:13,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:13,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1121620372, now seen corresponding path program 1 times [2020-12-23 17:13:13,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:13,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622188808] [2020-12-23 17:13:13,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:13,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622188808] [2020-12-23 17:13:13,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:13:13,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 17:13:13,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792559438] [2020-12-23 17:13:13,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:13:13,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:13,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:13:13,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:13:13,900 INFO L87 Difference]: Start difference. First operand 140 states and 192 transitions. Second operand 5 states. [2020-12-23 17:13:14,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:14,021 INFO L93 Difference]: Finished difference Result 139 states and 190 transitions. [2020-12-23 17:13:14,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:13:14,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 17:13:14,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:14,023 INFO L225 Difference]: With dead ends: 139 [2020-12-23 17:13:14,023 INFO L226 Difference]: Without dead ends: 139 [2020-12-23 17:13:14,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:13:14,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-12-23 17:13:14,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2020-12-23 17:13:14,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-12-23 17:13:14,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 190 transitions. [2020-12-23 17:13:14,033 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 190 transitions. Word has length 10 [2020-12-23 17:13:14,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:14,033 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 190 transitions. [2020-12-23 17:13:14,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:13:14,033 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 190 transitions. [2020-12-23 17:13:14,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 17:13:14,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:14,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:14,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 17:13:14,035 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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:14,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:14,036 INFO L82 PathProgramCache]: Analyzing trace with hash -676042672, now seen corresponding path program 1 times [2020-12-23 17:13:14,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:14,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680323828] [2020-12-23 17:13:14,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:14,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-23 17:13:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:14,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680323828] [2020-12-23 17:13:14,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:13:14,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:13:14,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673077186] [2020-12-23 17:13:14,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:13:14,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:14,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:13:14,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:13:14,148 INFO L87 Difference]: Start difference. First operand 139 states and 190 transitions. Second operand 6 states. [2020-12-23 17:13:14,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:14,415 INFO L93 Difference]: Finished difference Result 163 states and 185 transitions. [2020-12-23 17:13:14,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:13:14,416 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 17:13:14,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:14,418 INFO L225 Difference]: With dead ends: 163 [2020-12-23 17:13:14,418 INFO L226 Difference]: Without dead ends: 163 [2020-12-23 17:13:14,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:13:14,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-23 17:13:14,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 134. [2020-12-23 17:13:14,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-23 17:13:14,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 179 transitions. [2020-12-23 17:13:14,431 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 179 transitions. Word has length 15 [2020-12-23 17:13:14,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:14,432 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 179 transitions. [2020-12-23 17:13:14,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:13:14,432 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 179 transitions. [2020-12-23 17:13:14,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 17:13:14,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:14,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:14,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 17:13:14,435 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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:14,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:14,435 INFO L82 PathProgramCache]: Analyzing trace with hash -676042671, now seen corresponding path program 1 times [2020-12-23 17:13:14,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:14,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810425354] [2020-12-23 17:13:14,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:14,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-23 17:13:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:14,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810425354] [2020-12-23 17:13:14,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:13:14,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:13:14,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378474233] [2020-12-23 17:13:14,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:13:14,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:14,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:13:14,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:13:14,565 INFO L87 Difference]: Start difference. First operand 134 states and 179 transitions. Second operand 6 states. [2020-12-23 17:13:14,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:14,859 INFO L93 Difference]: Finished difference Result 159 states and 180 transitions. [2020-12-23 17:13:14,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:13:14,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 17:13:14,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:14,861 INFO L225 Difference]: With dead ends: 159 [2020-12-23 17:13:14,861 INFO L226 Difference]: Without dead ends: 159 [2020-12-23 17:13:14,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:13:14,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-12-23 17:13:14,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 134. [2020-12-23 17:13:14,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-23 17:13:14,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 173 transitions. [2020-12-23 17:13:14,867 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 173 transitions. Word has length 15 [2020-12-23 17:13:14,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:14,868 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 173 transitions. [2020-12-23 17:13:14,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:13:14,868 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 173 transitions. [2020-12-23 17:13:14,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 17:13:14,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:14,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:14,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 17:13:14,869 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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:14,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:14,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1007406096, now seen corresponding path program 1 times [2020-12-23 17:13:14,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:14,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369819040] [2020-12-23 17:13:14,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:14,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:14,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369819040] [2020-12-23 17:13:14,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069381096] [2020-12-23 17:13:14,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:13:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:15,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 17:13:15,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:13:15,174 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:13:15,182 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:13:15,190 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:15,193 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:13:15,194 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:13:15,308 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:15,309 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 [2020-12-23 17:13:15,320 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:13:15,341 INFO L625 ElimStorePlain]: treesize reduction 14, result has 54.8 percent of original size [2020-12-23 17:13:15,342 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:13:15,342 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:17 [2020-12-23 17:13:15,520 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:13:15,526 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:13:15,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:15,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 17:13:15,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 12 [2020-12-23 17:13:15,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063333039] [2020-12-23 17:13:15,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 17:13:15,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:15,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 17:13:15,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-12-23 17:13:15,564 INFO L87 Difference]: Start difference. First operand 134 states and 173 transitions. Second operand 9 states. [2020-12-23 17:13:16,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:16,204 INFO L93 Difference]: Finished difference Result 205 states and 257 transitions. [2020-12-23 17:13:16,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:13:16,205 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-12-23 17:13:16,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:16,206 INFO L225 Difference]: With dead ends: 205 [2020-12-23 17:13:16,207 INFO L226 Difference]: Without dead ends: 205 [2020-12-23 17:13:16,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-12-23 17:13:16,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-12-23 17:13:16,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 143. [2020-12-23 17:13:16,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-23 17:13:16,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 186 transitions. [2020-12-23 17:13:16,215 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 186 transitions. Word has length 16 [2020-12-23 17:13:16,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:16,215 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 186 transitions. [2020-12-23 17:13:16,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 17:13:16,215 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 186 transitions. [2020-12-23 17:13:16,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 17:13:16,216 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:16,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:16,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 17:13:16,430 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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:16,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:16,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1007406097, now seen corresponding path program 1 times [2020-12-23 17:13:16,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:16,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762836298] [2020-12-23 17:13:16,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:16,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:16,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762836298] [2020-12-23 17:13:16,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390590268] [2020-12-23 17:13:16,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:13:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:16,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 17:13:16,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:13:16,666 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:16,667 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 [2020-12-23 17:13:16,669 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:13:16,672 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:13:16,693 INFO L625 ElimStorePlain]: treesize reduction 14, result has 54.8 percent of original size [2020-12-23 17:13:16,695 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:13:16,695 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:17 [2020-12-23 17:13:16,823 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:13:16,827 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:13:16,830 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 17:13:16,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:16,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 17:13:16,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 12 [2020-12-23 17:13:16,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808702873] [2020-12-23 17:13:16,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 17:13:16,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:16,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 17:13:16,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-23 17:13:16,862 INFO L87 Difference]: Start difference. First operand 143 states and 186 transitions. Second operand 10 states. [2020-12-23 17:13:17,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:17,692 INFO L93 Difference]: Finished difference Result 226 states and 261 transitions. [2020-12-23 17:13:17,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:13:17,693 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-12-23 17:13:17,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:17,695 INFO L225 Difference]: With dead ends: 226 [2020-12-23 17:13:17,695 INFO L226 Difference]: Without dead ends: 226 [2020-12-23 17:13:17,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-12-23 17:13:17,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-23 17:13:17,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 143. [2020-12-23 17:13:17,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-23 17:13:17,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 184 transitions. [2020-12-23 17:13:17,704 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 184 transitions. Word has length 16 [2020-12-23 17:13:17,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:17,704 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 184 transitions. [2020-12-23 17:13:17,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 17:13:17,705 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 184 transitions. [2020-12-23 17:13:17,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 17:13:17,706 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:17,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:17,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:13:17,922 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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:17,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:17,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1682703596, now seen corresponding path program 1 times [2020-12-23 17:13:17,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:17,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782427601] [2020-12-23 17:13:17,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:18,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-23 17:13:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:18,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782427601] [2020-12-23 17:13:18,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:13:18,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 17:13:18,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127963839] [2020-12-23 17:13:18,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 17:13:18,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:18,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 17:13:18,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:13:18,051 INFO L87 Difference]: Start difference. First operand 143 states and 184 transitions. Second operand 8 states. [2020-12-23 17:13:18,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:18,313 INFO L93 Difference]: Finished difference Result 196 states and 245 transitions. [2020-12-23 17:13:18,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:13:18,313 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-12-23 17:13:18,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:18,315 INFO L225 Difference]: With dead ends: 196 [2020-12-23 17:13:18,315 INFO L226 Difference]: Without dead ends: 196 [2020-12-23 17:13:18,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:13:18,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-12-23 17:13:18,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 151. [2020-12-23 17:13:18,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-12-23 17:13:18,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 195 transitions. [2020-12-23 17:13:18,322 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 195 transitions. Word has length 19 [2020-12-23 17:13:18,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:18,323 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 195 transitions. [2020-12-23 17:13:18,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 17:13:18,323 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 195 transitions. [2020-12-23 17:13:18,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 17:13:18,324 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:18,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:18,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 17:13:18,325 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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:18,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:18,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1814435946, now seen corresponding path program 1 times [2020-12-23 17:13:18,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:18,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54368435] [2020-12-23 17:13:18,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:18,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-23 17:13:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:18,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54368435] [2020-12-23 17:13:18,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:13:18,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 17:13:18,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721890135] [2020-12-23 17:13:18,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 17:13:18,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:18,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 17:13:18,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:13:18,414 INFO L87 Difference]: Start difference. First operand 151 states and 195 transitions. Second operand 7 states. [2020-12-23 17:13:18,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:18,624 INFO L93 Difference]: Finished difference Result 191 states and 239 transitions. [2020-12-23 17:13:18,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:13:18,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-12-23 17:13:18,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:18,626 INFO L225 Difference]: With dead ends: 191 [2020-12-23 17:13:18,626 INFO L226 Difference]: Without dead ends: 191 [2020-12-23 17:13:18,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-23 17:13:18,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-12-23 17:13:18,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 153. [2020-12-23 17:13:18,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-12-23 17:13:18,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 197 transitions. [2020-12-23 17:13:18,633 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 197 transitions. Word has length 21 [2020-12-23 17:13:18,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:18,634 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 197 transitions. [2020-12-23 17:13:18,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 17:13:18,634 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 197 transitions. [2020-12-23 17:13:18,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 17:13:18,635 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:18,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:18,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 17:13:18,636 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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:18,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:18,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1300172899, now seen corresponding path program 1 times [2020-12-23 17:13:18,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:18,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436677038] [2020-12-23 17:13:18,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:18,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-23 17:13:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:18,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:18,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436677038] [2020-12-23 17:13:18,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081633531] [2020-12-23 17:13:18,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:13:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:18,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 17:13:18,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:13:18,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:18,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:13:18,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-12-23 17:13:18,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686659664] [2020-12-23 17:13:18,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 17:13:18,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:18,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 17:13:18,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-23 17:13:18,891 INFO L87 Difference]: Start difference. First operand 153 states and 197 transitions. Second operand 12 states. [2020-12-23 17:13:19,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:19,428 INFO L93 Difference]: Finished difference Result 225 states and 258 transitions. [2020-12-23 17:13:19,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:13:19,428 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-12-23 17:13:19,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:19,430 INFO L225 Difference]: With dead ends: 225 [2020-12-23 17:13:19,430 INFO L226 Difference]: Without dead ends: 223 [2020-12-23 17:13:19,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-12-23 17:13:19,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-12-23 17:13:19,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 153. [2020-12-23 17:13:19,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-12-23 17:13:19,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 196 transitions. [2020-12-23 17:13:19,438 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 196 transitions. Word has length 21 [2020-12-23 17:13:19,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:19,438 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 196 transitions. [2020-12-23 17:13:19,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 17:13:19,438 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 196 transitions. [2020-12-23 17:13:19,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 17:13:19,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:19,440 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:19,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 17:13:19,653 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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:19,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:19,654 INFO L82 PathProgramCache]: Analyzing trace with hash -2104198502, now seen corresponding path program 1 times [2020-12-23 17:13:19,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:19,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114233961] [2020-12-23 17:13:19,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:19,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:19,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114233961] [2020-12-23 17:13:19,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613572546] [2020-12-23 17:13:19,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:13:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:19,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 17:13:19,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:13:19,925 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 [2020-12-23 17:13:19,926 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:13:19,931 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:19,932 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:13:19,932 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-23 17:13:19,962 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 17:13:19,963 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:13:19,967 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:19,969 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:13:19,969 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-12-23 17:13:20,033 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 21 treesize of output 9 [2020-12-23 17:13:20,035 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:13:20,037 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:20,037 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:13:20,038 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:5 [2020-12-23 17:13:20,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:20,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:13:20,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2020-12-23 17:13:20,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600952985] [2020-12-23 17:13:20,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 17:13:20,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:20,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 17:13:20,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-12-23 17:13:20,111 INFO L87 Difference]: Start difference. First operand 153 states and 196 transitions. Second operand 19 states. [2020-12-23 17:13:22,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:22,317 INFO L93 Difference]: Finished difference Result 519 states and 650 transitions. [2020-12-23 17:13:22,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-23 17:13:22,318 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-12-23 17:13:22,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:22,324 INFO L225 Difference]: With dead ends: 519 [2020-12-23 17:13:22,325 INFO L226 Difference]: Without dead ends: 519 [2020-12-23 17:13:22,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 17:13:22,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-12-23 17:13:22,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 237. [2020-12-23 17:13:22,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-12-23 17:13:22,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 325 transitions. [2020-12-23 17:13:22,340 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 325 transitions. Word has length 22 [2020-12-23 17:13:22,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:22,340 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 325 transitions. [2020-12-23 17:13:22,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 17:13:22,341 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 325 transitions. [2020-12-23 17:13:22,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 17:13:22,342 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:22,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:22,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:13:22,555 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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:22,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:22,556 INFO L82 PathProgramCache]: Analyzing trace with hash 439738587, now seen corresponding path program 1 times [2020-12-23 17:13:22,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:22,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035196934] [2020-12-23 17:13:22,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:22,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-23 17:13:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:22,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035196934] [2020-12-23 17:13:22,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:13:22,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 17:13:22,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835593656] [2020-12-23 17:13:22,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:13:22,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:22,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:13:22,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:13:22,628 INFO L87 Difference]: Start difference. First operand 237 states and 325 transitions. Second operand 4 states. [2020-12-23 17:13:22,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:22,661 INFO L93 Difference]: Finished difference Result 252 states and 340 transitions. [2020-12-23 17:13:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:13:22,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-12-23 17:13:22,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:22,669 INFO L225 Difference]: With dead ends: 252 [2020-12-23 17:13:22,669 INFO L226 Difference]: Without dead ends: 252 [2020-12-23 17:13:22,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:13:22,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-12-23 17:13:22,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 247. [2020-12-23 17:13:22,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-12-23 17:13:22,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 335 transitions. [2020-12-23 17:13:22,703 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 335 transitions. Word has length 23 [2020-12-23 17:13:22,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:22,704 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 335 transitions. [2020-12-23 17:13:22,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:13:22,704 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 335 transitions. [2020-12-23 17:13:22,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 17:13:22,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:22,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:22,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 17:13:22,705 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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:22,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:22,706 INFO L82 PathProgramCache]: Analyzing trace with hash 387998185, now seen corresponding path program 1 times [2020-12-23 17:13:22,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:22,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520607326] [2020-12-23 17:13:22,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:22,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-23 17:13:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:22,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:22,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520607326] [2020-12-23 17:13:22,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:13:22,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 17:13:22,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248600138] [2020-12-23 17:13:22,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:13:22,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:22,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:13:22,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:13:22,821 INFO L87 Difference]: Start difference. First operand 247 states and 335 transitions. Second operand 5 states. [2020-12-23 17:13:23,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:23,154 INFO L93 Difference]: Finished difference Result 316 states and 392 transitions. [2020-12-23 17:13:23,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:13:23,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-12-23 17:13:23,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:23,157 INFO L225 Difference]: With dead ends: 316 [2020-12-23 17:13:23,158 INFO L226 Difference]: Without dead ends: 316 [2020-12-23 17:13:23,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:13:23,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-12-23 17:13:23,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 246. [2020-12-23 17:13:23,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-12-23 17:13:23,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 333 transitions. [2020-12-23 17:13:23,174 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 333 transitions. Word has length 23 [2020-12-23 17:13:23,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:23,174 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 333 transitions. [2020-12-23 17:13:23,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:13:23,174 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 333 transitions. [2020-12-23 17:13:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 17:13:23,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:23,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:23,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 17:13:23,176 INFO L429 AbstractCegarLoop]: === Iteration 18 === [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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:23,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:23,176 INFO L82 PathProgramCache]: Analyzing trace with hash 387998186, now seen corresponding path program 1 times [2020-12-23 17:13:23,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:23,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580984142] [2020-12-23 17:13:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:23,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-23 17:13:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:23,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:23,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580984142] [2020-12-23 17:13:23,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:13:23,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 17:13:23,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498781281] [2020-12-23 17:13:23,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:13:23,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:23,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:13:23,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:13:23,241 INFO L87 Difference]: Start difference. First operand 246 states and 333 transitions. Second operand 5 states. [2020-12-23 17:13:23,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:23,517 INFO L93 Difference]: Finished difference Result 314 states and 385 transitions. [2020-12-23 17:13:23,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:13:23,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-12-23 17:13:23,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:23,520 INFO L225 Difference]: With dead ends: 314 [2020-12-23 17:13:23,520 INFO L226 Difference]: Without dead ends: 314 [2020-12-23 17:13:23,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:13:23,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-12-23 17:13:23,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 240. [2020-12-23 17:13:23,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-12-23 17:13:23,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 324 transitions. [2020-12-23 17:13:23,530 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 324 transitions. Word has length 23 [2020-12-23 17:13:23,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:23,531 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 324 transitions. [2020-12-23 17:13:23,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:13:23,531 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 324 transitions. [2020-12-23 17:13:23,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 17:13:23,532 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:23,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:23,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 17:13:23,532 INFO L429 AbstractCegarLoop]: === Iteration 19 === [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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:23,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:23,533 INFO L82 PathProgramCache]: Analyzing trace with hash 746999412, now seen corresponding path program 1 times [2020-12-23 17:13:23,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:23,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914250286] [2020-12-23 17:13:23,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:23,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-23 17:13:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:23,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:23,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914250286] [2020-12-23 17:13:23,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:13:23,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:13:23,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121125818] [2020-12-23 17:13:23,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:13:23,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:23,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:13:23,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:13:23,618 INFO L87 Difference]: Start difference. First operand 240 states and 324 transitions. Second operand 6 states. [2020-12-23 17:13:23,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:23,875 INFO L93 Difference]: Finished difference Result 261 states and 325 transitions. [2020-12-23 17:13:23,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:13:23,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-12-23 17:13:23,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:23,880 INFO L225 Difference]: With dead ends: 261 [2020-12-23 17:13:23,881 INFO L226 Difference]: Without dead ends: 261 [2020-12-23 17:13:23,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:13:23,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-12-23 17:13:23,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 240. [2020-12-23 17:13:23,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-12-23 17:13:23,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 318 transitions. [2020-12-23 17:13:23,891 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 318 transitions. Word has length 24 [2020-12-23 17:13:23,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:23,891 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 318 transitions. [2020-12-23 17:13:23,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:13:23,891 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 318 transitions. [2020-12-23 17:13:23,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 17:13:23,892 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:23,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:23,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 17:13:23,892 INFO L429 AbstractCegarLoop]: === Iteration 20 === [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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:23,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:23,893 INFO L82 PathProgramCache]: Analyzing trace with hash 746999411, now seen corresponding path program 1 times [2020-12-23 17:13:23,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:23,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735165816] [2020-12-23 17:13:23,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:23,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-23 17:13:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:23,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735165816] [2020-12-23 17:13:23,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:13:23,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:13:23,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238281290] [2020-12-23 17:13:23,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:13:23,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:23,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:13:23,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:13:23,939 INFO L87 Difference]: Start difference. First operand 240 states and 318 transitions. Second operand 6 states. [2020-12-23 17:13:24,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:24,176 INFO L93 Difference]: Finished difference Result 252 states and 313 transitions. [2020-12-23 17:13:24,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:13:24,177 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-12-23 17:13:24,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:24,178 INFO L225 Difference]: With dead ends: 252 [2020-12-23 17:13:24,178 INFO L226 Difference]: Without dead ends: 252 [2020-12-23 17:13:24,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:13:24,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-12-23 17:13:24,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 237. [2020-12-23 17:13:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-12-23 17:13:24,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 307 transitions. [2020-12-23 17:13:24,188 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 307 transitions. Word has length 24 [2020-12-23 17:13:24,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:24,188 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 307 transitions. [2020-12-23 17:13:24,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:13:24,189 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 307 transitions. [2020-12-23 17:13:24,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 17:13:24,189 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:24,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:24,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 17:13:24,190 INFO L429 AbstractCegarLoop]: === Iteration 21 === [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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:24,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:24,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1457055843, now seen corresponding path program 1 times [2020-12-23 17:13:24,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:24,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241344244] [2020-12-23 17:13:24,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:24,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-23 17:13:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:24,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:24,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241344244] [2020-12-23 17:13:24,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61768395] [2020-12-23 17:13:24,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:13:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:24,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-23 17:13:24,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:13:24,834 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:13:24,835 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:13:24,843 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:24,844 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:13:24,844 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-12-23 17:13:24,892 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 17:13:24,892 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:13:24,899 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:24,903 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:13:24,903 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:18 [2020-12-23 17:13:25,150 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:25,150 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2020-12-23 17:13:25,155 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:13:25,157 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:13:25,158 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:13:25,167 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:25,173 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:13:25,175 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:13:25,177 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:13:25,178 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:13:25,179 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:21 [2020-12-23 17:13:25,181 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:13:25,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:25,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:13:25,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2020-12-23 17:13:25,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415874418] [2020-12-23 17:13:25,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-23 17:13:25,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:25,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-23 17:13:25,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2020-12-23 17:13:25,247 INFO L87 Difference]: Start difference. First operand 237 states and 307 transitions. Second operand 23 states. [2020-12-23 17:13:25,561 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2020-12-23 17:13:26,320 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-12-23 17:13:27,028 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 43 [2020-12-23 17:13:28,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:28,231 INFO L93 Difference]: Finished difference Result 430 states and 510 transitions. [2020-12-23 17:13:28,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-23 17:13:28,231 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 25 [2020-12-23 17:13:28,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:28,234 INFO L225 Difference]: With dead ends: 430 [2020-12-23 17:13:28,235 INFO L226 Difference]: Without dead ends: 430 [2020-12-23 17:13:28,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=319, Invalid=1087, Unknown=0, NotChecked=0, Total=1406 [2020-12-23 17:13:28,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-12-23 17:13:28,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 237. [2020-12-23 17:13:28,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-12-23 17:13:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 306 transitions. [2020-12-23 17:13:28,252 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 306 transitions. Word has length 25 [2020-12-23 17:13:28,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:28,253 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 306 transitions. [2020-12-23 17:13:28,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-23 17:13:28,253 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 306 transitions. [2020-12-23 17:13:28,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 17:13:28,254 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:28,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:28,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 17:13:28,468 INFO L429 AbstractCegarLoop]: === Iteration 22 === [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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:28,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:28,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1457055844, now seen corresponding path program 1 times [2020-12-23 17:13:28,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:28,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546714693] [2020-12-23 17:13:28,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:28,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-23 17:13:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:28,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:28,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546714693] [2020-12-23 17:13:28,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032619757] [2020-12-23 17:13:28,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:13:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:28,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 17:13:28,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:13:28,884 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 17:13:28,885 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:13:28,895 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:28,899 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 17:13:28,902 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:13:28,911 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:28,912 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:13:28,912 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:29 [2020-12-23 17:13:29,075 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 29 treesize of output 17 [2020-12-23 17:13:29,077 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:13:29,085 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:29,088 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 32 treesize of output 14 [2020-12-23 17:13:29,089 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:13:29,094 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:29,095 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:13:29,095 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:11 [2020-12-23 17:13:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:29,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:13:29,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2020-12-23 17:13:29,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248154292] [2020-12-23 17:13:29,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 17:13:29,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:29,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 17:13:29,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-12-23 17:13:29,123 INFO L87 Difference]: Start difference. First operand 237 states and 306 transitions. Second operand 17 states. [2020-12-23 17:13:34,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:34,387 INFO L93 Difference]: Finished difference Result 398 states and 474 transitions. [2020-12-23 17:13:34,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 17:13:34,387 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-12-23 17:13:34,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:34,390 INFO L225 Difference]: With dead ends: 398 [2020-12-23 17:13:34,390 INFO L226 Difference]: Without dead ends: 398 [2020-12-23 17:13:34,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-12-23 17:13:34,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-12-23 17:13:34,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 255. [2020-12-23 17:13:34,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-12-23 17:13:34,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 328 transitions. [2020-12-23 17:13:34,401 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 328 transitions. Word has length 25 [2020-12-23 17:13:34,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:34,402 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 328 transitions. [2020-12-23 17:13:34,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 17:13:34,402 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 328 transitions. [2020-12-23 17:13:34,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 17:13:34,403 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:34,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:34,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:13:34,617 INFO L429 AbstractCegarLoop]: === Iteration 23 === [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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:34,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:34,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1633976965, now seen corresponding path program 1 times [2020-12-23 17:13:34,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:34,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821782323] [2020-12-23 17:13:34,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:34,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-23 17:13:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:34,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:34,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821782323] [2020-12-23 17:13:34,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:13:34,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 17:13:34,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114271775] [2020-12-23 17:13:34,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 17:13:34,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:34,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 17:13:34,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:13:34,726 INFO L87 Difference]: Start difference. First operand 255 states and 328 transitions. Second operand 8 states. [2020-12-23 17:13:35,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:13:35,025 INFO L93 Difference]: Finished difference Result 283 states and 359 transitions. [2020-12-23 17:13:35,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:13:35,025 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-12-23 17:13:35,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:13:35,027 INFO L225 Difference]: With dead ends: 283 [2020-12-23 17:13:35,028 INFO L226 Difference]: Without dead ends: 283 [2020-12-23 17:13:35,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:13:35,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-12-23 17:13:35,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 266. [2020-12-23 17:13:35,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-12-23 17:13:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 342 transitions. [2020-12-23 17:13:35,037 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 342 transitions. Word has length 27 [2020-12-23 17:13:35,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:13:35,038 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 342 transitions. [2020-12-23 17:13:35,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 17:13:35,038 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 342 transitions. [2020-12-23 17:13:35,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 17:13:35,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:13:35,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:13:35,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-23 17:13:35,039 INFO L429 AbstractCegarLoop]: === Iteration 24 === [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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:13:35,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:13:35,039 INFO L82 PathProgramCache]: Analyzing trace with hash -353927123, now seen corresponding path program 1 times [2020-12-23 17:13:35,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:13:35,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573657762] [2020-12-23 17:13:35,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:13:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:35,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-23 17:13:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:35,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:35,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573657762] [2020-12-23 17:13:35,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041014142] [2020-12-23 17:13:35,201 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 [2020-12-23 17:13:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:13:35,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 46 conjunts are in the unsatisfiable core [2020-12-23 17:13:35,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:13:35,366 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 17:13:35,367 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:13:35,379 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:35,383 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 17:13:35,384 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:13:35,397 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:35,398 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:13:35,398 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:39, output treesize:31 [2020-12-23 17:13:35,474 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:35,474 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 56 [2020-12-23 17:13:35,476 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:13:35,518 INFO L625 ElimStorePlain]: treesize reduction 26, result has 65.8 percent of original size [2020-12-23 17:13:35,544 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:35,545 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 56 [2020-12-23 17:13:35,547 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:13:35,591 INFO L625 ElimStorePlain]: treesize reduction 18, result has 75.0 percent of original size [2020-12-23 17:13:35,593 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:13:35,596 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:13:35,596 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:54, output treesize:54 [2020-12-23 17:13:35,599 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:13:35,646 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:13:36,990 WARN L197 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 53 [2020-12-23 17:13:37,007 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2020-12-23 17:13:37,007 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:13:37,373 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 4, 3, 1] term [2020-12-23 17:13:37,374 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:13:37,378 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 7 disjuncts [2020-12-23 17:13:37,709 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:37,709 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 94 [2020-12-23 17:13:37,713 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-23 17:13:37,714 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-23 17:13:37,717 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:13:37,738 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:37,746 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:13:37,747 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 39 [2020-12-23 17:13:37,749 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:13:37,750 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 17:13:37,754 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:13:37,756 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 3 xjuncts. [2020-12-23 17:13:37,780 INFO L625 ElimStorePlain]: treesize reduction 7, result has 73.1 percent of original size [2020-12-23 17:13:37,782 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-12-23 17:13:37,782 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:110, output treesize:14 [2020-12-23 17:13:37,813 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:13:37,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:13:37,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:13:37,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16] total 22 [2020-12-23 17:13:37,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623551476] [2020-12-23 17:13:37,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-23 17:13:37,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:13:37,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-23 17:13:37,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-12-23 17:13:37,851 INFO L87 Difference]: Start difference. First operand 266 states and 342 transitions. Second operand 22 states. [2020-12-23 17:13:46,336 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-12-23 17:13:51,006 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-12-23 17:13:53,335 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-12-23 17:13:53,671 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-12-23 17:13:56,202 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-12-23 17:13:58,514 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-12-23 17:13:58,734 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-12-23 17:13:58,981 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2020-12-23 17:14:04,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:14:04,207 INFO L93 Difference]: Finished difference Result 377 states and 449 transitions. [2020-12-23 17:14:04,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-23 17:14:04,208 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 27 [2020-12-23 17:14:04,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:14:04,211 INFO L225 Difference]: With dead ends: 377 [2020-12-23 17:14:04,211 INFO L226 Difference]: Without dead ends: 371 [2020-12-23 17:14:04,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=280, Invalid=1202, Unknown=0, NotChecked=0, Total=1482 [2020-12-23 17:14:04,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-12-23 17:14:04,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 273. [2020-12-23 17:14:04,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-12-23 17:14:04,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 347 transitions. [2020-12-23 17:14:04,224 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 347 transitions. Word has length 27 [2020-12-23 17:14:04,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:14:04,225 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 347 transitions. [2020-12-23 17:14:04,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-23 17:14:04,225 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 347 transitions. [2020-12-23 17:14:04,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 17:14:04,226 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:14:04,226 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:14:04,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:14:04,442 INFO L429 AbstractCegarLoop]: === Iteration 25 === [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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:14:04,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:14:04,443 INFO L82 PathProgramCache]: Analyzing trace with hash 923786604, now seen corresponding path program 1 times [2020-12-23 17:14:04,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:14:04,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320204449] [2020-12-23 17:14:04,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:14:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:14:04,713 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:14:04,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320204449] [2020-12-23 17:14:04,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469727637] [2020-12-23 17:14:04,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:14:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:14:04,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 17:14:04,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:14:04,928 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 17:14:04,929 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:04,940 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:14:04,945 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 17:14:04,946 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:04,956 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:14:04,958 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:14:04,958 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:29 [2020-12-23 17:14:05,068 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 29 treesize of output 17 [2020-12-23 17:14:05,070 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:05,078 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:14:05,081 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 32 treesize of output 14 [2020-12-23 17:14:05,082 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:05,088 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:14:05,089 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:14:05,089 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:11 [2020-12-23 17:14:05,182 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 17:14:05,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:14:05,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2020-12-23 17:14:05,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703706040] [2020-12-23 17:14:05,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-23 17:14:05,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:14:05,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-23 17:14:05,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-12-23 17:14:05,185 INFO L87 Difference]: Start difference. First operand 273 states and 347 transitions. Second operand 22 states. [2020-12-23 17:14:06,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:14:06,497 INFO L93 Difference]: Finished difference Result 323 states and 398 transitions. [2020-12-23 17:14:06,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 17:14:06,502 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 28 [2020-12-23 17:14:06,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:14:06,504 INFO L225 Difference]: With dead ends: 323 [2020-12-23 17:14:06,504 INFO L226 Difference]: Without dead ends: 323 [2020-12-23 17:14:06,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2020-12-23 17:14:06,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-23 17:14:06,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 273. [2020-12-23 17:14:06,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-12-23 17:14:06,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 345 transitions. [2020-12-23 17:14:06,523 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 345 transitions. Word has length 28 [2020-12-23 17:14:06,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:14:06,526 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 345 transitions. [2020-12-23 17:14:06,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-23 17:14:06,526 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 345 transitions. [2020-12-23 17:14:06,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 17:14:06,526 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:14:06,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:14:06,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-23 17:14:06,741 INFO L429 AbstractCegarLoop]: === Iteration 26 === [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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:14:06,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:14:06,742 INFO L82 PathProgramCache]: Analyzing trace with hash 427343141, now seen corresponding path program 1 times [2020-12-23 17:14:06,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:14:06,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043474248] [2020-12-23 17:14:06,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:14:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:14:07,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-23 17:14:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:14:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:14:07,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043474248] [2020-12-23 17:14:07,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620632504] [2020-12-23 17:14:07,186 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 [2020-12-23 17:14:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:14:07,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-23 17:14:07,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:14:07,351 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 [2020-12-23 17:14:07,352 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:07,358 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:14:07,360 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:14:07,363 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:10 [2020-12-23 17:14:11,502 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 20 treesize of output 8 [2020-12-23 17:14:11,503 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:14:11,505 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:14:11,506 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:14:11,506 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:4 [2020-12-23 17:14:11,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:14:11,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:14:11,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2020-12-23 17:14:11,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124229238] [2020-12-23 17:14:11,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 17:14:11,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:14:11,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 17:14:11,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=227, Unknown=2, NotChecked=0, Total=272 [2020-12-23 17:14:11,538 INFO L87 Difference]: Start difference. First operand 273 states and 345 transitions. Second operand 17 states. [2020-12-23 17:14:34,504 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2020-12-23 17:14:34,651 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2020-12-23 17:15:21,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:15:21,650 INFO L93 Difference]: Finished difference Result 364 states and 426 transitions. [2020-12-23 17:15:21,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 17:15:21,651 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 27 [2020-12-23 17:15:21,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:15:21,654 INFO L225 Difference]: With dead ends: 364 [2020-12-23 17:15:21,654 INFO L226 Difference]: Without dead ends: 364 [2020-12-23 17:15:21,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=178, Invalid=575, Unknown=3, NotChecked=0, Total=756 [2020-12-23 17:15:21,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-12-23 17:15:21,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 257. [2020-12-23 17:15:21,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-12-23 17:15:21,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 321 transitions. [2020-12-23 17:15:21,665 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 321 transitions. Word has length 27 [2020-12-23 17:15:21,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:15:21,665 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 321 transitions. [2020-12-23 17:15:21,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 17:15:21,665 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 321 transitions. [2020-12-23 17:15:21,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 17:15:21,666 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:15:21,666 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:15:21,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-23 17:15:21,880 INFO L429 AbstractCegarLoop]: === Iteration 27 === [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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:15:21,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:15:21,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1442511059, now seen corresponding path program 1 times [2020-12-23 17:15:21,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:15:21,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067944469] [2020-12-23 17:15:21,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:15:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:21,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-23 17:15:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:21,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-12-23 17:15:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:21,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 17:15:21,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067944469] [2020-12-23 17:15:21,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:15:21,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 17:15:21,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359742874] [2020-12-23 17:15:21,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:15:21,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:15:21,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:15:21,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:15:21,928 INFO L87 Difference]: Start difference. First operand 257 states and 321 transitions. Second operand 4 states. [2020-12-23 17:15:21,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:15:21,977 INFO L93 Difference]: Finished difference Result 259 states and 308 transitions. [2020-12-23 17:15:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:15:21,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-12-23 17:15:21,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:15:21,979 INFO L225 Difference]: With dead ends: 259 [2020-12-23 17:15:21,979 INFO L226 Difference]: Without dead ends: 259 [2020-12-23 17:15:21,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:15:21,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-12-23 17:15:21,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 245. [2020-12-23 17:15:21,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-12-23 17:15:21,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 300 transitions. [2020-12-23 17:15:21,989 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 300 transitions. Word has length 29 [2020-12-23 17:15:21,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:15:21,989 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 300 transitions. [2020-12-23 17:15:21,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:15:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 300 transitions. [2020-12-23 17:15:21,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 17:15:21,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:15:21,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:15:21,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-23 17:15:21,990 INFO L429 AbstractCegarLoop]: === Iteration 28 === [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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:15:21,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:15:21,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1697542573, now seen corresponding path program 1 times [2020-12-23 17:15:21,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:15:21,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396810833] [2020-12-23 17:15:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:15:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:22,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-23 17:15:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:15:22,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396810833] [2020-12-23 17:15:22,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:15:22,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 17:15:22,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824924408] [2020-12-23 17:15:22,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 17:15:22,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:15:22,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 17:15:22,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:15:22,095 INFO L87 Difference]: Start difference. First operand 245 states and 300 transitions. Second operand 7 states. [2020-12-23 17:15:22,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:15:22,413 INFO L93 Difference]: Finished difference Result 281 states and 339 transitions. [2020-12-23 17:15:22,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:15:22,414 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-23 17:15:22,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:15:22,416 INFO L225 Difference]: With dead ends: 281 [2020-12-23 17:15:22,416 INFO L226 Difference]: Without dead ends: 281 [2020-12-23 17:15:22,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:15:22,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-12-23 17:15:22,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 260. [2020-12-23 17:15:22,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-12-23 17:15:22,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 319 transitions. [2020-12-23 17:15:22,426 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 319 transitions. Word has length 29 [2020-12-23 17:15:22,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:15:22,426 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 319 transitions. [2020-12-23 17:15:22,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 17:15:22,427 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 319 transitions. [2020-12-23 17:15:22,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 17:15:22,427 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:15:22,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:15:22,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-23 17:15:22,428 INFO L429 AbstractCegarLoop]: === Iteration 29 === [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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:15:22,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:15:22,428 INFO L82 PathProgramCache]: Analyzing trace with hash 793451563, now seen corresponding path program 1 times [2020-12-23 17:15:22,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:15:22,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599497890] [2020-12-23 17:15:22,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:15:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:22,976 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2020-12-23 17:15:22,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-23 17:15:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:15:23,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599497890] [2020-12-23 17:15:23,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138730728] [2020-12-23 17:15:23,014 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:15:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:23,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-23 17:15:23,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:15:23,154 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:15:23,156 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:23,168 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:23,173 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:15:23,174 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:23,186 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:23,187 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:15:23,188 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:21 [2020-12-23 17:15:23,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:23,239 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 21 treesize of output 20 [2020-12-23 17:15:23,240 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:23,260 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:23,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:23,268 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 21 treesize of output 20 [2020-12-23 17:15:23,272 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:23,290 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:23,291 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:15:23,291 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:47, output treesize:39 [2020-12-23 17:15:23,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:23,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:23,491 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 28 treesize of output 30 [2020-12-23 17:15:23,493 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:23,526 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:23,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:23,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:23,537 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 28 treesize of output 30 [2020-12-23 17:15:23,552 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:23,584 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:23,585 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:15:23,586 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:69, output treesize:61 [2020-12-23 17:15:23,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:23,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:23,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:23,690 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2020-12-23 17:15:23,693 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:23,738 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:23,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:23,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:23,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:23,750 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2020-12-23 17:15:23,753 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:23,794 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:23,795 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:15:23,796 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:87, output treesize:79 [2020-12-23 17:15:23,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:23,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:23,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:23,915 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 53 [2020-12-23 17:15:23,917 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:23,956 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:23,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:23,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:23,984 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:23,985 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 89 treesize of output 94 [2020-12-23 17:15:23,994 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:24,026 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:24,030 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 17:15:24,031 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:127, output treesize:93 [2020-12-23 17:15:24,862 INFO L443 ElimStorePlain]: Different costs {20=[|v_#memory_$Pointer$.offset_40|], 30=[|v_#memory_$Pointer$.base_43|]} [2020-12-23 17:15:24,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:24,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:24,994 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-12-23 17:15:24,995 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:24,995 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 111 treesize of output 281 [2020-12-23 17:15:25,007 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 17:15:25,009 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2020-12-23 17:15:25,014 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 17:15:25,015 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2020-12-23 17:15:25,022 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:15:25,024 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,029 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 17:15:25,030 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:15:25,036 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 17:15:25,038 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:15:25,041 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-23 17:15:25,042 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:15:25,044 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,047 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:15:25,048 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,051 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,053 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:15:25,056 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:15:25,057 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-23 17:15:25,061 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:15:25,063 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,066 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:15:25,068 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,070 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,072 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:15:25,074 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-23 17:15:25,075 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,077 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:15:25,080 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,082 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:15:25,084 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:15:25,085 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:15:25,088 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 17:15:25,089 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-23 17:15:25,091 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,092 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:15:25,094 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:15:25,096 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,099 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:15:25,101 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,104 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2020-12-23 17:15:25,106 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 17:15:25,107 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:15:25,110 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:15:25,112 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,117 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 17:15:25,118 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:15:25,125 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:15:25,127 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-23 17:15:25,129 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-23 17:15:25,130 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,131 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:15:25,134 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:15:25,136 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:15:25,139 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,140 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:15:25,143 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-23 17:15:25,144 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,146 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:15:25,151 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:15:25,152 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,154 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:15:25,156 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,160 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-12-23 17:15:25,161 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:15:25,162 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,165 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,166 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:15:25,168 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:15:25,170 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:15:25,172 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:15:25,410 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-12-23 17:15:25,411 INFO L625 ElimStorePlain]: treesize reduction 170, result has 46.7 percent of original size [2020-12-23 17:15:25,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:25,440 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:15:25,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:25,702 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-12-23 17:15:25,703 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:25,704 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 110 treesize of output 327 [2020-12-23 17:15:25,715 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:25,898 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-23 17:15:25,899 INFO L625 ElimStorePlain]: treesize reduction 37, result has 76.0 percent of original size [2020-12-23 17:15:25,905 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 2, 1] term [2020-12-23 17:15:25,906 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:15:25,907 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-12-23 17:15:25,907 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:15:25,908 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-23 17:15:25,908 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:15:25,910 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:15:25,912 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-23 17:15:25,913 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-12-23 17:15:25,917 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:15:25,918 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:15:25,920 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:15:25,922 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:15:25,922 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:162, output treesize:216 [2020-12-23 17:15:25,925 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:15:25,926 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 17:15:26,046 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:15:26,187 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:15:26,188 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:15:26,190 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:15:26,192 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:15:26,194 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 17:15:26,196 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:15:26,200 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 17:15:26,212 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 17:15:26,226 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:15:26,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:26,231 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:15:26,263 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:26,264 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 63 [2020-12-23 17:15:26,267 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 17:15:26,269 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:15:26,277 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:15:26,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:26,307 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:26,307 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 67 [2020-12-23 17:15:26,310 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 17:15:26,313 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:15:26,390 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:26,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:26,402 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:15:26,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:26,412 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:15:26,415 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 15 [2020-12-23 17:15:26,417 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:26,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:26,426 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:15:26,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:26,430 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 15 [2020-12-23 17:15:26,433 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:26,479 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:26,484 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:15:26,484 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:173, output treesize:7 [2020-12-23 17:15:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:15:26,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:15:26,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 25 [2020-12-23 17:15:26,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512158742] [2020-12-23 17:15:26,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-23 17:15:26,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:15:26,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-23 17:15:26,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2020-12-23 17:15:26,505 INFO L87 Difference]: Start difference. First operand 260 states and 319 transitions. Second operand 25 states. [2020-12-23 17:15:27,129 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2020-12-23 17:15:27,418 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2020-12-23 17:15:29,719 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2020-12-23 17:15:32,385 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-12-23 17:15:32,884 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2020-12-23 17:15:35,271 WARN L197 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 128 DAG size of output: 71 [2020-12-23 17:15:35,566 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2020-12-23 17:15:37,883 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2020-12-23 17:15:38,734 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2020-12-23 17:15:38,912 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-12-23 17:15:42,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:15:42,512 INFO L93 Difference]: Finished difference Result 416 states and 483 transitions. [2020-12-23 17:15:42,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-23 17:15:42,513 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 31 [2020-12-23 17:15:42,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:15:42,515 INFO L225 Difference]: With dead ends: 416 [2020-12-23 17:15:42,516 INFO L226 Difference]: Without dead ends: 416 [2020-12-23 17:15:42,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=396, Invalid=1858, Unknown=2, NotChecked=0, Total=2256 [2020-12-23 17:15:42,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-12-23 17:15:42,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 249. [2020-12-23 17:15:42,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-12-23 17:15:42,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 304 transitions. [2020-12-23 17:15:42,540 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 304 transitions. Word has length 31 [2020-12-23 17:15:42,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:15:42,541 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 304 transitions. [2020-12-23 17:15:42,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-23 17:15:42,541 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 304 transitions. [2020-12-23 17:15:42,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 17:15:42,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:15:42,541 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:15:42,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-23 17:15:42,757 INFO L429 AbstractCegarLoop]: === Iteration 30 === [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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:15:42,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:15:42,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1113512885, now seen corresponding path program 1 times [2020-12-23 17:15:42,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:15:42,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001987239] [2020-12-23 17:15:42,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:15:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:43,323 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:15:43,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001987239] [2020-12-23 17:15:43,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981203385] [2020-12-23 17:15:43,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:15:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:43,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 17:15:43,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:15:43,631 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 17:15:43,633 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:43,651 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:43,657 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 17:15:43,658 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:43,672 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:43,673 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:15:43,674 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:38, output treesize:30 [2020-12-23 17:15:43,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:43,750 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 23 treesize of output 22 [2020-12-23 17:15:43,753 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:43,772 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:43,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:43,780 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 23 treesize of output 22 [2020-12-23 17:15:43,782 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:43,798 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:43,800 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:15:43,800 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:50, output treesize:54 [2020-12-23 17:15:44,373 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:44,374 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 67 [2020-12-23 17:15:44,377 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-23 17:15:44,380 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:15:44,393 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:44,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:44,400 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 12 [2020-12-23 17:15:44,403 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:44,412 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:44,415 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:15:44,415 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:96, output treesize:7 [2020-12-23 17:15:44,488 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:15:44,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:15:44,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 27 [2020-12-23 17:15:44,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024259138] [2020-12-23 17:15:44,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-23 17:15:44,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:15:44,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-23 17:15:44,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2020-12-23 17:15:44,491 INFO L87 Difference]: Start difference. First operand 249 states and 304 transitions. Second operand 27 states. [2020-12-23 17:15:45,270 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2020-12-23 17:15:46,380 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2020-12-23 17:15:47,121 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-12-23 17:15:47,708 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-12-23 17:15:50,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:15:50,511 INFO L93 Difference]: Finished difference Result 336 states and 383 transitions. [2020-12-23 17:15:50,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-23 17:15:50,513 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 34 [2020-12-23 17:15:50,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:15:50,515 INFO L225 Difference]: With dead ends: 336 [2020-12-23 17:15:50,515 INFO L226 Difference]: Without dead ends: 336 [2020-12-23 17:15:50,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=349, Invalid=2101, Unknown=0, NotChecked=0, Total=2450 [2020-12-23 17:15:50,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-12-23 17:15:50,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 237. [2020-12-23 17:15:50,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-12-23 17:15:50,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 285 transitions. [2020-12-23 17:15:50,531 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 285 transitions. Word has length 34 [2020-12-23 17:15:50,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:15:50,531 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 285 transitions. [2020-12-23 17:15:50,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-23 17:15:50,531 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 285 transitions. [2020-12-23 17:15:50,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 17:15:50,532 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:15:50,532 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:15:50,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:15:50,748 INFO L429 AbstractCegarLoop]: === Iteration 31 === [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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:15:50,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:15:50,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1295726731, now seen corresponding path program 1 times [2020-12-23 17:15:50,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:15:50,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388887767] [2020-12-23 17:15:50,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:15:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:50,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-23 17:15:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:50,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-12-23 17:15:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:50,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 17:15:50,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388887767] [2020-12-23 17:15:50,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:15:50,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:15:50,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532797517] [2020-12-23 17:15:50,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:15:50,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:15:50,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:15:50,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:15:50,856 INFO L87 Difference]: Start difference. First operand 237 states and 285 transitions. Second operand 5 states. [2020-12-23 17:15:50,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:15:50,900 INFO L93 Difference]: Finished difference Result 246 states and 294 transitions. [2020-12-23 17:15:50,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:15:50,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-12-23 17:15:50,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:15:50,903 INFO L225 Difference]: With dead ends: 246 [2020-12-23 17:15:50,903 INFO L226 Difference]: Without dead ends: 246 [2020-12-23 17:15:50,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:15:50,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-12-23 17:15:50,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 239. [2020-12-23 17:15:50,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-12-23 17:15:50,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 287 transitions. [2020-12-23 17:15:50,912 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 287 transitions. Word has length 35 [2020-12-23 17:15:50,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:15:50,912 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 287 transitions. [2020-12-23 17:15:50,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:15:50,913 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 287 transitions. [2020-12-23 17:15:50,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 17:15:50,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:15:50,913 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:15:50,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-23 17:15:50,914 INFO L429 AbstractCegarLoop]: === Iteration 32 === [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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:15:50,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:15:50,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1512828144, now seen corresponding path program 1 times [2020-12-23 17:15:50,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:15:50,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185475769] [2020-12-23 17:15:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:15:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:50,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-12-23 17:15:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:50,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-12-23 17:15:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:50,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 17:15:50,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185475769] [2020-12-23 17:15:50,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:15:50,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:15:50,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66320863] [2020-12-23 17:15:50,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:15:50,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:15:50,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:15:50,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:15:50,994 INFO L87 Difference]: Start difference. First operand 239 states and 287 transitions. Second operand 4 states. [2020-12-23 17:15:51,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:15:51,120 INFO L93 Difference]: Finished difference Result 244 states and 292 transitions. [2020-12-23 17:15:51,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:15:51,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-12-23 17:15:51,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:15:51,122 INFO L225 Difference]: With dead ends: 244 [2020-12-23 17:15:51,122 INFO L226 Difference]: Without dead ends: 222 [2020-12-23 17:15:51,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:15:51,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-12-23 17:15:51,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 217. [2020-12-23 17:15:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-12-23 17:15:51,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 263 transitions. [2020-12-23 17:15:51,132 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 263 transitions. Word has length 36 [2020-12-23 17:15:51,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:15:51,133 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 263 transitions. [2020-12-23 17:15:51,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:15:51,133 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 263 transitions. [2020-12-23 17:15:51,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 17:15:51,133 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:15:51,133 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:15:51,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-23 17:15:51,134 INFO L429 AbstractCegarLoop]: === Iteration 33 === [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.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr35REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr36REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr37REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, is_list_containing_xErr2REQUIRES_VIOLATION, is_list_containing_xErr3REQUIRES_VIOLATION, is_list_containing_xErr0REQUIRES_VIOLATION, is_list_containing_xErr1REQUIRES_VIOLATION]=== [2020-12-23 17:15:51,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:15:51,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1874362859, now seen corresponding path program 1 times [2020-12-23 17:15:51,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:15:51,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833026168] [2020-12-23 17:15:51,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:15:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:51,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-12-23 17:15:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:51,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-12-23 17:15:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:15:51,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833026168] [2020-12-23 17:15:51,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821736192] [2020-12-23 17:15:51,438 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:15:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:15:51,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 70 conjunts are in the unsatisfiable core [2020-12-23 17:15:51,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:15:51,551 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 17:15:51,553 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:51,559 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:51,560 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:15:51,561 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:15:51,656 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:51,657 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 [2020-12-23 17:15:51,659 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:51,716 INFO L625 ElimStorePlain]: treesize reduction 14, result has 62.2 percent of original size [2020-12-23 17:15:51,718 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:15:51,718 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:23 [2020-12-23 17:15:51,784 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:15:51,785 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:51,816 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:51,824 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 17:15:51,825 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:51,854 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:51,856 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:15:51,856 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:48, output treesize:40 [2020-12-23 17:15:51,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:51,940 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 21 treesize of output 20 [2020-12-23 17:15:51,942 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:51,979 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:51,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:51,988 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 21 treesize of output 20 [2020-12-23 17:15:51,991 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:52,026 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:52,028 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:15:52,028 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:66, output treesize:58 [2020-12-23 17:15:52,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:52,189 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:52,190 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 2 case distinctions, treesize of input 67 treesize of output 130 [2020-12-23 17:15:52,193 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:52,296 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-12-23 17:15:52,297 INFO L625 ElimStorePlain]: treesize reduction 70, result has 55.1 percent of original size [2020-12-23 17:15:52,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:15:52,306 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:15:52,323 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:15:52,324 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 1 case distinctions, treesize of input 51 treesize of output 62 [2020-12-23 17:15:52,327 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:15:52,414 INFO L625 ElimStorePlain]: treesize reduction 14, result has 84.1 percent of original size [2020-12-23 17:15:52,415 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:15:52,416 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:102, output treesize:74 [2020-12-23 17:15:52,628 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 17:16:00,919 WARN L197 SmtUtils]: Spent 8.09 s on a formula simplification that was a NOOP. DAG size: 68 [2020-12-23 17:16:00,925 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2020-12-23 17:16:00,926 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:16:17,169 WARN L197 SmtUtils]: Spent 16.15 s on a formula simplification that was a NOOP. DAG size: 72 [2020-12-23 17:16:17,455 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 4, 5, 1] term [2020-12-23 17:16:17,455 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-23 17:16:23,735 WARN L197 SmtUtils]: Spent 6.14 s on a formula simplification that was a NOOP. DAG size: 120 [2020-12-23 17:16:30,095 WARN L197 SmtUtils]: Spent 6.06 s on a formula simplification that was a NOOP. DAG size: 62 [2020-12-23 17:16:34,243 WARN L197 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 59 [2020-12-23 17:16:34,270 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 4, 4, 1] term [2020-12-23 17:16:34,270 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 17:16:38,929 WARN L197 SmtUtils]: Spent 4.35 s on a formula simplification. DAG size of input: 262 DAG size of output: 117 [2020-12-23 17:16:38,973 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 17:16:38,974 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 10 disjuncts [2020-12-23 17:16:39,290 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 37 [2020-12-23 17:16:39,479 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:16:39,480 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 75 [2020-12-23 17:16:39,482 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:16:39,511 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:16:39,512 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. [2020-12-23 17:16:39,513 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:129, output treesize:70 [2020-12-23 17:16:39,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:16:39,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 17:16:39,717 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 17:16:39,724 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:16:39,724 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 34 [2020-12-23 17:16:39,726 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 17:16:39,728 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:16:39,743 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:16:39,746 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 17:16:39,746 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:76, output treesize:19 [2020-12-23 17:16:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:16:39,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:16:39,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20] total 32 [2020-12-23 17:16:39,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313286361] [2020-12-23 17:16:39,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-23 17:16:39,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:16:39,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-23 17:16:39,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=932, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 17:16:39,858 INFO L87 Difference]: Start difference. First operand 217 states and 263 transitions. Second operand 33 states. [2020-12-23 17:16:40,745 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-12-23 17:16:40,954 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-23 17:16:59,394 WARN L197 SmtUtils]: Spent 18.19 s on a formula simplification. DAG size of input: 97 DAG size of output: 70 [2020-12-23 17:17:19,923 WARN L197 SmtUtils]: Spent 18.25 s on a formula simplification. DAG size of input: 106 DAG size of output: 72 [2020-12-23 17:17:20,288 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-23 17:17:22,730 WARN L197 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 167 DAG size of output: 78 [2020-12-23 17:17:22,903 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59