/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-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/heap-manipulation/merge_sort-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:12:57,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:12:57,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:12:57,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:12:57,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:12:57,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:12:57,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:12:57,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:12:57,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:12:57,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:12:57,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:12:57,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:12:57,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:12:57,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:12:57,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:12:57,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:12:57,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:12:57,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:12:57,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:12:57,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:12:57,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:12:57,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:12:57,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:12:57,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:12:57,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 06:12:57,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 06:12:57,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 06:12:57,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 06:12:57,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 06:12:57,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 06:12:57,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 06:12:57,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 06:12:57,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 06:12:57,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 06:12:57,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 06:12:57,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 06:12:57,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 06:12:57,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 06:12:57,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:12:57,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:12:57,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:12:57,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 06:12:57,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:12:57,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:12:57,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:12:57,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:12:57,725 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:12:57,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:12:57,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:12:57,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:12:57,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:12:57,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:12:57,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:12:57,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:12:57,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:12:57,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:12:57,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:12:57,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:12:57,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:12:57,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:12:57,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:12:57,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:12:57,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:12:57,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:12:57,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:12:57,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:12:57,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:12:57,731 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:12:58,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:12:58,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:12:58,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:12:58,148 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:12:58,149 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:12:58,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2020-12-23 06:12:58,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/79a1dbae5/70b0587cb7dd4c7890e940c4107d287e/FLAGbb38770cb [2020-12-23 06:12:58,988 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:12:58,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2020-12-23 06:12:59,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/79a1dbae5/70b0587cb7dd4c7890e940c4107d287e/FLAGbb38770cb [2020-12-23 06:12:59,043 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/79a1dbae5/70b0587cb7dd4c7890e940c4107d287e [2020-12-23 06:12:59,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:12:59,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:12:59,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:12:59,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:12:59,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:12:59,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:12:59" (1/1) ... [2020-12-23 06:12:59,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@145c2e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:59, skipping insertion in model container [2020-12-23 06:12:59,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:12:59" (1/1) ... [2020-12-23 06:12:59,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:12:59,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 06:12:59,611 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/merge_sort-1.i[22632,22645] left hand side expression in assignment: address: IdentifierExpression[~data,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~node~0,],base],StructAccessExpression[IdentifierExpression[~node~0,],offset]]] left hand side expression in assignment: address: IdentifierExpression[#t~mem7,] left hand side expression in assignment: address: IdentifierExpression[~dst,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~data,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~data,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~dst~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~data,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~data,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~dst~0,] left hand side expression in assignment: lhs: VariableLHS[~data,] left hand side expression in assignment: lhs: VariableLHS[~shape,] left hand side expression in assignment: lhs: VariableLHS[~pos~0,] left hand side expression in assignment: lhs: VariableLHS[~pos~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~node~1,],base],StructAccessExpression[IdentifierExpression[~node~1,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~node~1,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~node~1,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~item~0,],base],StructAccessExpression[IdentifierExpression[~item~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~item~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~item~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~data~0,] left hand side expression in assignment: lhs: VariableLHS[~data~0,] left hand side expression in assignment: lhs: VariableLHS[~node~2,] [2020-12-23 06:12:59,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:12:59,695 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 06:12:59,757 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/merge_sort-1.i[22632,22645] left hand side expression in assignment: address: IdentifierExpression[~data,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~node~0,],base],StructAccessExpression[IdentifierExpression[~node~0,],offset]]] left hand side expression in assignment: address: IdentifierExpression[#t~mem7,] left hand side expression in assignment: address: IdentifierExpression[~dst,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~data,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~data,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~dst~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~data,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~data,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~dst~0,] left hand side expression in assignment: lhs: VariableLHS[~data,] left hand side expression in assignment: lhs: VariableLHS[~shape,] left hand side expression in assignment: lhs: VariableLHS[~pos~0,] left hand side expression in assignment: lhs: VariableLHS[~pos~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~node~1,],base],StructAccessExpression[IdentifierExpression[~node~1,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~node~1,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~node~1,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~item~0,],base],StructAccessExpression[IdentifierExpression[~item~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~item~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~item~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~data~0,] left hand side expression in assignment: lhs: VariableLHS[~data~0,] left hand side expression in assignment: lhs: VariableLHS[~node~2,] [2020-12-23 06:12:59,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:12:59,875 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:12:59,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:59 WrapperNode [2020-12-23 06:12:59,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:12:59,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:12:59,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:12:59,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:12:59,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:59" (1/1) ... [2020-12-23 06:12:59,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:59" (1/1) ... [2020-12-23 06:12:59,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:12:59,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:12:59,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:12:59,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:12:59,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:59" (1/1) ... [2020-12-23 06:12:59,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:59" (1/1) ... [2020-12-23 06:12:59,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:59" (1/1) ... [2020-12-23 06:12:59,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:59" (1/1) ... [2020-12-23 06:12:59,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:59" (1/1) ... [2020-12-23 06:13:00,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:59" (1/1) ... [2020-12-23 06:13:00,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:59" (1/1) ... [2020-12-23 06:13:00,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:13:00,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:13:00,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:13:00,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:13:00,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:59" (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 06:13:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 06:13:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 06:13:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 06:13:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 06:13:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:13:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 06:13:00,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 06:13:00,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:13:00,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:13:00,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:13:00,903 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:13:00,904 INFO L299 CfgBuilder]: Removed 75 assume(true) statements. [2020-12-23 06:13:00,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:13:00 BoogieIcfgContainer [2020-12-23 06:13:00,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:13:00,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:13:00,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:13:00,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:13:00,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:12:59" (1/3) ... [2020-12-23 06:13:00,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a5b7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:13:00, skipping insertion in model container [2020-12-23 06:13:00,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:59" (2/3) ... [2020-12-23 06:13:00,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a5b7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:13:00, skipping insertion in model container [2020-12-23 06:13:00,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:13:00" (3/3) ... [2020-12-23 06:13:00,917 INFO L111 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2020-12-23 06:13:00,925 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:13:00,930 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-12-23 06:13:00,951 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-12-23 06:13:00,982 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:13:00,982 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:13:00,983 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:13:00,983 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:13:00,983 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:13:00,983 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:13:00,984 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:13:00,984 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:13:01,005 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-12-23 06:13:01,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 06:13:01,011 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:13:01,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 06:13:01,013 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:13:01,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:13:01,020 INFO L82 PathProgramCache]: Analyzing trace with hash 890218827, now seen corresponding path program 1 times [2020-12-23 06:13:01,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:13:01,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492480557] [2020-12-23 06:13:01,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:13:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:13:01,193 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 06:13:01,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492480557] [2020-12-23 06:13:01,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:13:01,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:13:01,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359037118] [2020-12-23 06:13:01,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 06:13:01,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:13:01,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 06:13:01,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:13:01,219 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 2 states. [2020-12-23 06:13:01,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:13:01,252 INFO L93 Difference]: Finished difference Result 196 states and 316 transitions. [2020-12-23 06:13:01,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 06:13:01,253 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-23 06:13:01,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:13:01,265 INFO L225 Difference]: With dead ends: 196 [2020-12-23 06:13:01,265 INFO L226 Difference]: Without dead ends: 92 [2020-12-23 06:13:01,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:13:01,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-23 06:13:01,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-12-23 06:13:01,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-23 06:13:01,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2020-12-23 06:13:01,315 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 6 [2020-12-23 06:13:01,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:13:01,316 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2020-12-23 06:13:01,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 06:13:01,316 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2020-12-23 06:13:01,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 06:13:01,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:13:01,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:13:01,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:13:01,318 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:13:01,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:13:01,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1806865150, now seen corresponding path program 1 times [2020-12-23 06:13:01,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:13:01,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774910516] [2020-12-23 06:13:01,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:13:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:13:01,377 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 06:13:01,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774910516] [2020-12-23 06:13:01,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:13:01,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 06:13:01,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351355904] [2020-12-23 06:13:01,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 06:13:01,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:13:01,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 06:13:01,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 06:13:01,382 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand 3 states. [2020-12-23 06:13:01,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:13:01,415 INFO L93 Difference]: Finished difference Result 182 states and 202 transitions. [2020-12-23 06:13:01,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 06:13:01,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-23 06:13:01,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:13:01,418 INFO L225 Difference]: With dead ends: 182 [2020-12-23 06:13:01,418 INFO L226 Difference]: Without dead ends: 98 [2020-12-23 06:13:01,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 06:13:01,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-23 06:13:01,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2020-12-23 06:13:01,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-23 06:13:01,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2020-12-23 06:13:01,432 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 7 [2020-12-23 06:13:01,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:13:01,433 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2020-12-23 06:13:01,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 06:13:01,433 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2020-12-23 06:13:01,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 06:13:01,434 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:13:01,434 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:13:01,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:13:01,435 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:13:01,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:13:01,435 INFO L82 PathProgramCache]: Analyzing trace with hash 663763925, now seen corresponding path program 1 times [2020-12-23 06:13:01,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:13:01,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556048985] [2020-12-23 06:13:01,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:13:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:13:01,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:13:01,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556048985] [2020-12-23 06:13:01,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:13:01,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 06:13:01,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054892723] [2020-12-23 06:13:01,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 06:13:01,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:13:01,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 06:13:01,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:13:01,569 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand 5 states. [2020-12-23 06:13:01,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:13:01,787 INFO L93 Difference]: Finished difference Result 253 states and 288 transitions. [2020-12-23 06:13:01,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 06:13:01,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-23 06:13:01,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:13:01,793 INFO L225 Difference]: With dead ends: 253 [2020-12-23 06:13:01,793 INFO L226 Difference]: Without dead ends: 247 [2020-12-23 06:13:01,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 06:13:01,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-12-23 06:13:01,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 96. [2020-12-23 06:13:01,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-23 06:13:01,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2020-12-23 06:13:01,828 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 13 [2020-12-23 06:13:01,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:13:01,829 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2020-12-23 06:13:01,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 06:13:01,829 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2020-12-23 06:13:01,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 06:13:01,833 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:13:01,834 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:13:01,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 06:13:01,834 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:13:01,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:13:01,835 INFO L82 PathProgramCache]: Analyzing trace with hash 2036062252, now seen corresponding path program 1 times [2020-12-23 06:13:01,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:13:01,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117355997] [2020-12-23 06:13:01,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:13:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:13:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 06:13:01,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117355997] [2020-12-23 06:13:01,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:13:01,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 06:13:01,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114458358] [2020-12-23 06:13:01,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 06:13:01,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:13:01,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 06:13:01,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:13:01,991 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand 5 states. [2020-12-23 06:13:02,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:13:02,233 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2020-12-23 06:13:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 06:13:02,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-23 06:13:02,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:13:02,240 INFO L225 Difference]: With dead ends: 125 [2020-12-23 06:13:02,240 INFO L226 Difference]: Without dead ends: 123 [2020-12-23 06:13:02,241 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 06:13:02,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-23 06:13:02,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 94. [2020-12-23 06:13:02,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-23 06:13:02,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2020-12-23 06:13:02,264 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 20 [2020-12-23 06:13:02,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:13:02,267 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2020-12-23 06:13:02,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 06:13:02,268 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2020-12-23 06:13:02,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 06:13:02,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:13:02,269 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:13:02,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 06:13:02,270 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:13:02,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:13:02,271 INFO L82 PathProgramCache]: Analyzing trace with hash 2014113239, now seen corresponding path program 1 times [2020-12-23 06:13:02,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:13:02,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394112220] [2020-12-23 06:13:02,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:13:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:13:02,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 06:13:02,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394112220] [2020-12-23 06:13:02,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:13:02,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 06:13:02,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662014043] [2020-12-23 06:13:02,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 06:13:02,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:13:02,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 06:13:02,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:13:02,391 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand 5 states. [2020-12-23 06:13:02,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:13:02,557 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2020-12-23 06:13:02,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 06:13:02,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-23 06:13:02,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:13:02,558 INFO L225 Difference]: With dead ends: 94 [2020-12-23 06:13:02,559 INFO L226 Difference]: Without dead ends: 92 [2020-12-23 06:13:02,559 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 06:13:02,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-23 06:13:02,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-12-23 06:13:02,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-23 06:13:02,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2020-12-23 06:13:02,574 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 20 [2020-12-23 06:13:02,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:13:02,574 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2020-12-23 06:13:02,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 06:13:02,575 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2020-12-23 06:13:02,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 06:13:02,577 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:13:02,577 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:13:02,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 06:13:02,578 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:13:02,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:13:02,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1486605840, now seen corresponding path program 1 times [2020-12-23 06:13:02,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:13:02,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94891952] [2020-12-23 06:13:02,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:13:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:13:02,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:13:02,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94891952] [2020-12-23 06:13:02,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:13:02,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 06:13:02,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715293574] [2020-12-23 06:13:02,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 06:13:02,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:13:02,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 06:13:02,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 06:13:02,716 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand 7 states. [2020-12-23 06:13:03,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:13:03,023 INFO L93 Difference]: Finished difference Result 210 states and 230 transitions. [2020-12-23 06:13:03,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 06:13:03,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-23 06:13:03,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:13:03,025 INFO L225 Difference]: With dead ends: 210 [2020-12-23 06:13:03,025 INFO L226 Difference]: Without dead ends: 208 [2020-12-23 06:13:03,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-23 06:13:03,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-12-23 06:13:03,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 98. [2020-12-23 06:13:03,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-23 06:13:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2020-12-23 06:13:03,033 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 23 [2020-12-23 06:13:03,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:13:03,034 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2020-12-23 06:13:03,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 06:13:03,034 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2020-12-23 06:13:03,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 06:13:03,035 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:13:03,035 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:13:03,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 06:13:03,036 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:13:03,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:13:03,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1760261746, now seen corresponding path program 1 times [2020-12-23 06:13:03,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:13:03,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264356097] [2020-12-23 06:13:03,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:13:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:13:03,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:13:03,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264356097] [2020-12-23 06:13:03,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:13:03,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 06:13:03,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907720772] [2020-12-23 06:13:03,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 06:13:03,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:13:03,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 06:13:03,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 06:13:03,099 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 7 states. [2020-12-23 06:13:03,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:13:03,377 INFO L93 Difference]: Finished difference Result 208 states and 228 transitions. [2020-12-23 06:13:03,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 06:13:03,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-23 06:13:03,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:13:03,379 INFO L225 Difference]: With dead ends: 208 [2020-12-23 06:13:03,380 INFO L226 Difference]: Without dead ends: 206 [2020-12-23 06:13:03,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-23 06:13:03,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-23 06:13:03,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 104. [2020-12-23 06:13:03,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-23 06:13:03,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2020-12-23 06:13:03,387 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 23 [2020-12-23 06:13:03,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:13:03,388 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2020-12-23 06:13:03,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 06:13:03,388 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2020-12-23 06:13:03,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 06:13:03,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:13:03,389 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 06:13:03,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 06:13:03,389 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:13:03,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:13:03,390 INFO L82 PathProgramCache]: Analyzing trace with hash -2060804288, now seen corresponding path program 1 times [2020-12-23 06:13:03,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:13:03,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279741404] [2020-12-23 06:13:03,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:13:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:13:03,411 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:13:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:13:03,429 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:13:03,458 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 06:13:03,459 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 06:13:03,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 06:13:03,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:13:03 BoogieIcfgContainer [2020-12-23 06:13:03,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:13:03,501 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:13:03,501 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:13:03,501 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:13:03,503 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:13:00" (3/4) ... [2020-12-23 06:13:03,507 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 06:13:03,574 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/heap-manipulation/merge_sort-1.i-witness.graphml [2020-12-23 06:13:03,574 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:13:03,577 INFO L168 Benchmark]: Toolchain (without parser) took 4523.73 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.3 MB in the beginning and 68.8 MB in the end (delta: 56.5 MB). Peak memory consumption was 88.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:13:03,577 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 237.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:13:03,578 INFO L168 Benchmark]: CACSL2BoogieTranslator took 820.02 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 101.1 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:13:03,579 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.19 ms. Allocated memory is still 151.0 MB. Free memory was 101.0 MB in the beginning and 132.0 MB in the end (delta: -31.0 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. [2020-12-23 06:13:03,580 INFO L168 Benchmark]: Boogie Preprocessor took 60.08 ms. Allocated memory is still 151.0 MB. Free memory was 132.0 MB in the beginning and 129.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:13:03,580 INFO L168 Benchmark]: RCFGBuilder took 888.09 ms. Allocated memory is still 151.0 MB. Free memory was 129.4 MB in the beginning and 83.3 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:13:03,581 INFO L168 Benchmark]: TraceAbstraction took 2592.03 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 82.8 MB in the beginning and 71.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 41.8 MB. Max. memory is 8.0 GB. [2020-12-23 06:13:03,582 INFO L168 Benchmark]: Witness Printer took 73.47 ms. Allocated memory is still 181.4 MB. Free memory was 71.4 MB in the beginning and 68.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:13:03,586 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 237.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 820.02 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 101.1 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 80.19 ms. Allocated memory is still 151.0 MB. Free memory was 101.0 MB in the beginning and 132.0 MB in the end (delta: -31.0 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.08 ms. Allocated memory is still 151.0 MB. Free memory was 132.0 MB in the beginning and 129.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 888.09 ms. Allocated memory is still 151.0 MB. Free memory was 129.4 MB in the beginning and 83.3 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2592.03 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 82.8 MB in the beginning and 71.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 41.8 MB. Max. memory is 8.0 GB. * Witness Printer took 73.47 ms. Allocated memory is still 181.4 MB. Free memory was 71.4 MB in the beginning and 68.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 565]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L638] struct list *data = ((void *)0); [L639] COND TRUE __VERIFIER_nondet_int() [L640] struct node *node = malloc(sizeof *node); [L641] COND FALSE !(!node) [L643] node->next = node [L644] node->value = __VERIFIER_nondet_int() [L645] struct list *item = malloc(sizeof *item); [L646] COND FALSE !(!item) [L648] item->slist = node [L649] item->next = data [L650] data = item [L639] COND FALSE !(__VERIFIER_nondet_int()) [L652] COND FALSE !(!data) [L615] COND FALSE !(!(shape)) [L616] shape->next [L616] COND FALSE !(shape->next) [L622] COND FALSE !(!(shape)) [L623] EXPR shape->next [L623] COND FALSE !(!(shape->next == ((void *)0))) [L624] EXPR shape->slist [L624] COND FALSE !(!(shape->slist)) [L625] EXPR shape->slist [L625] EXPR shape->slist->next [L625] COND TRUE !(shape->slist->next == ((void *)0)) [L565] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 99 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 606 SDtfs, 1778 SDslu, 983 SDs, 0 SdLazy, 504 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 396 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 9955 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 10/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...