/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/ldv-sets/test_mutex_double_unlock.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:28:07,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:28:07,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:28:07,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:28:07,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:28:07,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:28:07,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:28:07,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:28:07,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:28:07,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:28:07,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:28:07,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:28:07,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:28:07,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:28:07,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:28:07,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:28:07,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:28:07,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:28:07,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:28:07,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:28:07,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:28:07,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:28:07,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:28:07,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:28:07,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 06:28:07,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:28:07,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:28:07,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:28:07,990 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 06:28:08,036 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:28:08,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:28:08,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:28:08,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:28:08,042 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:28:08,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:28:08,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:28:08,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:28:08,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:28:08,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:28:08,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:28:08,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:28:08,044 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:28:08,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:28:08,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:28:08,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:28:08,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:28:08,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:28:08,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:28:08,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:28:08,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:28:08,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:28:08,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:28:08,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:28:08,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:28:08,047 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:28:08,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:28:08,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:28:08,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:28:08,449 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:28:08,449 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:28:08,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2020-12-23 06:28:08,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/396a18243/fd85c540fb074cff9295dc9e88a26e70/FLAG2e1ba6ae7 [2020-12-23 06:28:09,259 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:28:09,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2020-12-23 06:28:09,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/396a18243/fd85c540fb074cff9295dc9e88a26e70/FLAG2e1ba6ae7 [2020-12-23 06:28:09,505 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/396a18243/fd85c540fb074cff9295dc9e88a26e70 [2020-12-23 06:28:09,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:28:09,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:28:09,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:28:09,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:28:09,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:28:09,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:28:09" (1/1) ... [2020-12-23 06:28:09,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d15cfc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:28:09, skipping insertion in model container [2020-12-23 06:28:09,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:28:09" (1/1) ... [2020-12-23 06:28:09,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:28:09,597 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~list,],base],StructAccessExpression[IdentifierExpression[~list,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~list,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~list,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~next,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~next,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new,],base],StructAccessExpression[IdentifierExpression[~new,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~new,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~prev,],base],StructAccessExpression[IdentifierExpression[~prev,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~next,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~next,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~prev,],base],StructAccessExpression[IdentifierExpression[~prev,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~le~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~le~0,],base],StructAccessExpression[IdentifierExpression[~le~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~m~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~m~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~m~1,] left hand side expression in assignment: lhs: VariableLHS[~m~1,] [2020-12-23 06:28:10,014 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/ldv-sets/test_mutex_double_unlock.i[25842,25855] [2020-12-23 06:28:10,025 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/ldv-sets/test_mutex_double_unlock.i[25967,25980] [2020-12-23 06:28:10,029 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/ldv-sets/test_mutex_double_unlock.i[26082,26095] [2020-12-23 06:28:10,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:28:10,045 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~list,],base],StructAccessExpression[IdentifierExpression[~list,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~list,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~list,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~next,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~next,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new,],base],StructAccessExpression[IdentifierExpression[~new,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~new,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~prev,],base],StructAccessExpression[IdentifierExpression[~prev,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~next,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~next,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~prev,],base],StructAccessExpression[IdentifierExpression[~prev,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~le~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~le~0,],base],StructAccessExpression[IdentifierExpression[~le~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~m~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~m~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~m~1,] left hand side expression in assignment: lhs: VariableLHS[~m~1,] [2020-12-23 06:28:10,143 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/ldv-sets/test_mutex_double_unlock.i[25842,25855] [2020-12-23 06:28:10,150 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/ldv-sets/test_mutex_double_unlock.i[25967,25980] [2020-12-23 06:28:10,152 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/ldv-sets/test_mutex_double_unlock.i[26082,26095] [2020-12-23 06:28:10,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:28:10,244 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:28:10,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:28:10 WrapperNode [2020-12-23 06:28:10,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:28:10,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:28:10,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:28:10,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:28:10,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:28:10" (1/1) ... [2020-12-23 06:28:10,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:28:10" (1/1) ... [2020-12-23 06:28:10,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:28:10,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:28:10,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:28:10,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:28:10,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:28:10" (1/1) ... [2020-12-23 06:28:10,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:28:10" (1/1) ... [2020-12-23 06:28:10,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:28:10" (1/1) ... [2020-12-23 06:28:10,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:28:10" (1/1) ... [2020-12-23 06:28:10,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:28:10" (1/1) ... [2020-12-23 06:28:10,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:28:10" (1/1) ... [2020-12-23 06:28:10,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:28:10" (1/1) ... [2020-12-23 06:28:10,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:28:10,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:28:10,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:28:10,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:28:10,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:28:10" (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 06:28:10,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 06:28:10,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 06:28:10,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:28:10,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 06:28:10,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 06:28:10,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-23 06:28:10,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:28:10,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:28:10,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:28:11,545 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:28:11,545 INFO L299 CfgBuilder]: Removed 82 assume(true) statements. [2020-12-23 06:28:11,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:28:11 BoogieIcfgContainer [2020-12-23 06:28:11,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:28:11,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:28:11,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:28:11,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:28:11,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:28:09" (1/3) ... [2020-12-23 06:28:11,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7004f019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:28:11, skipping insertion in model container [2020-12-23 06:28:11,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:28:10" (2/3) ... [2020-12-23 06:28:11,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7004f019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:28:11, skipping insertion in model container [2020-12-23 06:28:11,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:28:11" (3/3) ... [2020-12-23 06:28:11,560 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_double_unlock.i [2020-12-23 06:28:11,568 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:28:11,574 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-23 06:28:11,596 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-23 06:28:11,624 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:28:11,624 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:28:11,624 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:28:11,625 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:28:11,625 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:28:11,625 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:28:11,625 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:28:11,625 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:28:11,644 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-12-23 06:28:11,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 06:28:11,650 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:11,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:28:11,652 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:11,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:11,659 INFO L82 PathProgramCache]: Analyzing trace with hash 912087840, now seen corresponding path program 1 times [2020-12-23 06:28:11,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:11,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001917278] [2020-12-23 06:28:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:11,858 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 06:28:11,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001917278] [2020-12-23 06:28:11,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:28:11,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:28:11,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77865968] [2020-12-23 06:28:11,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 06:28:11,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:28:11,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 06:28:11,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:28:11,885 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 2 states. [2020-12-23 06:28:11,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:28:11,916 INFO L93 Difference]: Finished difference Result 172 states and 239 transitions. [2020-12-23 06:28:11,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 06:28:11,918 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-12-23 06:28:11,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:28:11,928 INFO L225 Difference]: With dead ends: 172 [2020-12-23 06:28:11,929 INFO L226 Difference]: Without dead ends: 84 [2020-12-23 06:28:11,933 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 06:28:11,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-23 06:28:11,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-12-23 06:28:11,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-23 06:28:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2020-12-23 06:28:11,976 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 14 [2020-12-23 06:28:11,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:28:11,977 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2020-12-23 06:28:11,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 06:28:11,977 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2020-12-23 06:28:11,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 06:28:11,978 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:11,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:28:11,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:28:11,979 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:11,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:11,980 INFO L82 PathProgramCache]: Analyzing trace with hash 793647061, now seen corresponding path program 1 times [2020-12-23 06:28:11,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:11,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974799707] [2020-12-23 06:28:11,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:12,156 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 06:28:12,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974799707] [2020-12-23 06:28:12,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:28:12,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:28:12,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010829105] [2020-12-23 06:28:12,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:28:12,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:28:12,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:28:12,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:28:12,165 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand 4 states. [2020-12-23 06:28:12,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:28:12,335 INFO L93 Difference]: Finished difference Result 135 states and 157 transitions. [2020-12-23 06:28:12,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:28:12,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 06:28:12,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:28:12,338 INFO L225 Difference]: With dead ends: 135 [2020-12-23 06:28:12,338 INFO L226 Difference]: Without dead ends: 131 [2020-12-23 06:28:12,339 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 06:28:12,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-23 06:28:12,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 88. [2020-12-23 06:28:12,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-23 06:28:12,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 105 transitions. [2020-12-23 06:28:12,363 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 105 transitions. Word has length 14 [2020-12-23 06:28:12,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:28:12,363 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 105 transitions. [2020-12-23 06:28:12,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:28:12,363 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 105 transitions. [2020-12-23 06:28:12,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 06:28:12,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:12,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:28:12,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:28:12,365 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:12,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:12,366 INFO L82 PathProgramCache]: Analyzing trace with hash 795255775, now seen corresponding path program 1 times [2020-12-23 06:28:12,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:12,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54009705] [2020-12-23 06:28:12,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:12,581 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 06:28:12,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54009705] [2020-12-23 06:28:12,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:28:12,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 06:28:12,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124282377] [2020-12-23 06:28:12,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:28:12,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:28:12,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:28:12,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:28:12,584 INFO L87 Difference]: Start difference. First operand 88 states and 105 transitions. Second operand 4 states. [2020-12-23 06:28:12,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:28:12,959 INFO L93 Difference]: Finished difference Result 219 states and 262 transitions. [2020-12-23 06:28:12,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 06:28:12,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 06:28:12,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:28:12,962 INFO L225 Difference]: With dead ends: 219 [2020-12-23 06:28:12,963 INFO L226 Difference]: Without dead ends: 140 [2020-12-23 06:28:12,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:28:12,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-23 06:28:12,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 101. [2020-12-23 06:28:12,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-23 06:28:12,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 118 transitions. [2020-12-23 06:28:12,979 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 118 transitions. Word has length 14 [2020-12-23 06:28:12,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:28:12,979 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 118 transitions. [2020-12-23 06:28:12,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:28:12,979 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 118 transitions. [2020-12-23 06:28:12,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 06:28:12,982 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:12,983 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] [2020-12-23 06:28:12,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 06:28:12,983 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:12,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1115638045, now seen corresponding path program 1 times [2020-12-23 06:28:12,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:12,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431715699] [2020-12-23 06:28:12,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:13,688 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 06:28:13,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431715699] [2020-12-23 06:28:13,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:28:13,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-23 06:28:13,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381769849] [2020-12-23 06:28:13,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 06:28:13,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:28:13,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 06:28:13,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-12-23 06:28:13,691 INFO L87 Difference]: Start difference. First operand 101 states and 118 transitions. Second operand 15 states. [2020-12-23 06:28:14,582 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-12-23 06:28:15,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:28:15,417 INFO L93 Difference]: Finished difference Result 211 states and 247 transitions. [2020-12-23 06:28:15,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 06:28:15,418 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2020-12-23 06:28:15,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:28:15,420 INFO L225 Difference]: With dead ends: 211 [2020-12-23 06:28:15,420 INFO L226 Difference]: Without dead ends: 160 [2020-12-23 06:28:15,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2020-12-23 06:28:15,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-12-23 06:28:15,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 103. [2020-12-23 06:28:15,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-23 06:28:15,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2020-12-23 06:28:15,435 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 28 [2020-12-23 06:28:15,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:28:15,436 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2020-12-23 06:28:15,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 06:28:15,436 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2020-12-23 06:28:15,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 06:28:15,437 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:15,438 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, 1, 1, 1, 1, 1] [2020-12-23 06:28:15,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 06:28:15,438 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:15,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:15,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1190752804, now seen corresponding path program 1 times [2020-12-23 06:28:15,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:15,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967585691] [2020-12-23 06:28:15,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:15,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:28:15,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967585691] [2020-12-23 06:28:15,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120863346] [2020-12-23 06:28:15,959 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 06:28:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:16,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 78 conjunts are in the unsatisfiable core [2020-12-23 06:28:16,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:28:16,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:16,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:16,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:17,087 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-12-23 06:28:17,088 INFO L348 Elim1Store]: treesize reduction 188, result has 55.0 percent of original size [2020-12-23 06:28:17,089 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 546 treesize of output 515 [2020-12-23 06:28:17,102 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:28:17,395 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-12-23 06:28:17,396 INFO L625 ElimStorePlain]: treesize reduction 142, result has 72.3 percent of original size [2020-12-23 06:28:17,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:17,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:17,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:17,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:17,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:17,704 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-12-23 06:28:17,705 INFO L348 Elim1Store]: treesize reduction 62, result has 73.5 percent of original size [2020-12-23 06:28:17,705 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 222 treesize of output 214 [2020-12-23 06:28:17,713 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 06:28:17,934 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2020-12-23 06:28:17,935 INFO L625 ElimStorePlain]: treesize reduction 162, result has 46.9 percent of original size [2020-12-23 06:28:17,952 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 06:28:17,953 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:647, output treesize:154 [2020-12-23 06:28:18,286 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-12-23 06:28:18,287 INFO L348 Elim1Store]: treesize reduction 18, result has 81.8 percent of original size [2020-12-23 06:28:18,287 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 180 treesize of output 175 [2020-12-23 06:28:18,296 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 06:28:18,326 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:28:18,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:18,349 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:28:18,350 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 7 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 44 [2020-12-23 06:28:18,352 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 06:28:18,367 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:28:18,370 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 06:28:18,370 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:186, output treesize:15 [2020-12-23 06:28:18,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:28:18,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:28:18,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-12-23 06:28:18,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511189471] [2020-12-23 06:28:18,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 06:28:18,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:28:18,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 06:28:18,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-12-23 06:28:18,430 INFO L87 Difference]: Start difference. First operand 103 states and 121 transitions. Second operand 14 states. [2020-12-23 06:28:18,880 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-23 06:28:19,082 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-12-23 06:28:19,347 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-12-23 06:28:19,655 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-12-23 06:28:21,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:28:21,350 INFO L93 Difference]: Finished difference Result 286 states and 335 transitions. [2020-12-23 06:28:21,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 06:28:21,351 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-12-23 06:28:21,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:28:21,362 INFO L225 Difference]: With dead ends: 286 [2020-12-23 06:28:21,362 INFO L226 Difference]: Without dead ends: 229 [2020-12-23 06:28:21,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2020-12-23 06:28:21,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-12-23 06:28:21,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 119. [2020-12-23 06:28:21,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-23 06:28:21,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2020-12-23 06:28:21,401 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 31 [2020-12-23 06:28:21,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:28:21,401 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2020-12-23 06:28:21,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 06:28:21,402 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2020-12-23 06:28:21,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 06:28:21,406 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:21,406 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, 1, 1, 1] [2020-12-23 06:28:21,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:28:21,608 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:21,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:21,610 INFO L82 PathProgramCache]: Analyzing trace with hash 251401029, now seen corresponding path program 1 times [2020-12-23 06:28:21,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:21,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762546720] [2020-12-23 06:28:21,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:21,682 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 06:28:21,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762546720] [2020-12-23 06:28:21,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:28:21,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:28:21,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706479253] [2020-12-23 06:28:21,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:28:21,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:28:21,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:28:21,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:28:21,690 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 4 states. [2020-12-23 06:28:21,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:28:21,786 INFO L93 Difference]: Finished difference Result 205 states and 240 transitions. [2020-12-23 06:28:21,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:28:21,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-12-23 06:28:21,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:28:21,788 INFO L225 Difference]: With dead ends: 205 [2020-12-23 06:28:21,788 INFO L226 Difference]: Without dead ends: 136 [2020-12-23 06:28:21,789 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 06:28:21,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-23 06:28:21,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 97. [2020-12-23 06:28:21,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-23 06:28:21,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2020-12-23 06:28:21,802 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 34 [2020-12-23 06:28:21,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:28:21,803 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2020-12-23 06:28:21,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:28:21,803 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2020-12-23 06:28:21,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 06:28:21,804 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:21,804 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:28:21,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 06:28:21,805 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:21,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:21,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1769595066, now seen corresponding path program 1 times [2020-12-23 06:28:21,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:21,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034484484] [2020-12-23 06:28:21,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:21,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 06:28:21,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034484484] [2020-12-23 06:28:21,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:28:21,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:28:21,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782663698] [2020-12-23 06:28:21,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:28:21,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:28:21,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:28:21,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:28:21,873 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand 4 states. [2020-12-23 06:28:21,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:28:21,954 INFO L93 Difference]: Finished difference Result 136 states and 156 transitions. [2020-12-23 06:28:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:28:21,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-12-23 06:28:21,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:28:21,957 INFO L225 Difference]: With dead ends: 136 [2020-12-23 06:28:21,957 INFO L226 Difference]: Without dead ends: 132 [2020-12-23 06:28:21,958 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 06:28:21,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-23 06:28:21,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 103. [2020-12-23 06:28:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-23 06:28:21,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2020-12-23 06:28:21,969 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 41 [2020-12-23 06:28:21,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:28:21,970 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2020-12-23 06:28:21,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:28:21,970 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2020-12-23 06:28:21,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 06:28:21,971 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:21,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:28:21,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 06:28:21,972 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:21,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:21,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1130333060, now seen corresponding path program 1 times [2020-12-23 06:28:21,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:21,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739694199] [2020-12-23 06:28:21,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 06:28:22,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739694199] [2020-12-23 06:28:22,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661652496] [2020-12-23 06:28:22,948 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 06:28:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:23,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 170 conjunts are in the unsatisfiable core [2020-12-23 06:28:23,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:28:23,254 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 06:28:23,255 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:28:23,265 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:28:23,266 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 06:28:23,266 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-23 06:28:23,393 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:28:23,393 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-23 06:28:23,396 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:28:23,403 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:28:23,414 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:28:23,415 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 06:28:23,416 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2020-12-23 06:28:23,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:24,159 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-12-23 06:28:24,161 INFO L348 Elim1Store]: treesize reduction 36, result has 77.5 percent of original size [2020-12-23 06:28:24,161 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 137 treesize of output 145 [2020-12-23 06:28:24,176 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:28:24,420 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-12-23 06:28:24,423 INFO L625 ElimStorePlain]: treesize reduction 74, result has 74.1 percent of original size [2020-12-23 06:28:24,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:24,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:24,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:24,655 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2020-12-23 06:28:24,656 INFO L348 Elim1Store]: treesize reduction 103, result has 35.6 percent of original size [2020-12-23 06:28:24,657 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 137 treesize of output 78 [2020-12-23 06:28:24,663 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 06:28:24,884 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-12-23 06:28:24,885 INFO L625 ElimStorePlain]: treesize reduction 18, result has 87.8 percent of original size [2020-12-23 06:28:24,892 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:28:24,893 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 06:28:24,894 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:287, output treesize:221 [2020-12-23 06:28:25,257 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-12-23 06:28:25,461 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-12-23 06:28:25,682 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-12-23 06:28:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 06:28:26,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:28:26,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 33 [2020-12-23 06:28:26,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672497996] [2020-12-23 06:28:26,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-23 06:28:26,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:28:26,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-23 06:28:26,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1039, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 06:28:26,024 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand 34 states. [2020-12-23 06:28:26,865 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-23 06:28:27,102 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-23 06:28:27,316 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-12-23 06:28:27,534 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-12-23 06:28:28,312 WARN L197 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-12-23 06:28:28,827 WARN L197 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2020-12-23 06:28:29,394 WARN L197 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2020-12-23 06:28:29,940 WARN L197 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2020-12-23 06:28:30,401 WARN L197 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2020-12-23 06:28:30,849 WARN L197 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2020-12-23 06:28:31,248 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2020-12-23 06:28:31,673 WARN L197 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2020-12-23 06:28:32,043 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-12-23 06:28:32,415 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2020-12-23 06:28:33,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:28:33,483 INFO L93 Difference]: Finished difference Result 175 states and 201 transitions. [2020-12-23 06:28:33,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 06:28:33,483 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 44 [2020-12-23 06:28:33,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:28:33,485 INFO L225 Difference]: With dead ends: 175 [2020-12-23 06:28:33,485 INFO L226 Difference]: Without dead ends: 110 [2020-12-23 06:28:33,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=364, Invalid=2498, Unknown=0, NotChecked=0, Total=2862 [2020-12-23 06:28:33,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-23 06:28:33,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 82. [2020-12-23 06:28:33,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-23 06:28:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2020-12-23 06:28:33,512 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 44 [2020-12-23 06:28:33,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:28:33,512 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2020-12-23 06:28:33,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-23 06:28:33,513 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2020-12-23 06:28:33,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-23 06:28:33,514 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:33,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:28:33,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:28:33,728 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:33,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:33,729 INFO L82 PathProgramCache]: Analyzing trace with hash 786851695, now seen corresponding path program 1 times [2020-12-23 06:28:33,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:33,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543889038] [2020-12-23 06:28:33,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:33,912 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 06:28:33,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543889038] [2020-12-23 06:28:33,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:28:33,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 06:28:33,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847901934] [2020-12-23 06:28:33,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 06:28:33,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:28:33,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 06:28:33,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 06:28:33,915 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand 8 states. [2020-12-23 06:28:34,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:28:34,465 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2020-12-23 06:28:34,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 06:28:34,466 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-12-23 06:28:34,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:28:34,468 INFO L225 Difference]: With dead ends: 182 [2020-12-23 06:28:34,468 INFO L226 Difference]: Without dead ends: 148 [2020-12-23 06:28:34,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-12-23 06:28:34,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-23 06:28:34,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 88. [2020-12-23 06:28:34,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-23 06:28:34,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2020-12-23 06:28:34,479 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 48 [2020-12-23 06:28:34,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:28:34,480 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2020-12-23 06:28:34,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 06:28:34,480 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2020-12-23 06:28:34,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 06:28:34,481 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:34,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:28:34,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 06:28:34,482 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:34,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:34,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1434516829, now seen corresponding path program 1 times [2020-12-23 06:28:34,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:34,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117902322] [2020-12-23 06:28:34,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:34,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 06:28:34,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117902322] [2020-12-23 06:28:34,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178198530] [2020-12-23 06:28:34,955 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 06:28:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:35,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 126 conjunts are in the unsatisfiable core [2020-12-23 06:28:35,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:28:35,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:35,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:35,520 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 06:28:35,765 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-23 06:28:35,767 INFO L348 Elim1Store]: treesize reduction 39, result has 78.1 percent of original size [2020-12-23 06:28:35,768 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 137 treesize of output 160 [2020-12-23 06:28:35,773 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:28:35,957 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-23 06:28:35,958 INFO L625 ElimStorePlain]: treesize reduction 86, result has 47.2 percent of original size [2020-12-23 06:28:35,965 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:28:35,968 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:28:35,971 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 06:28:35,971 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:149, output treesize:54 [2020-12-23 06:28:35,973 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:28:36,046 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:28:36,117 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:28:47,474 WARN L197 SmtUtils]: Spent 11.30 s on a formula simplification that was a NOOP. DAG size: 39 [2020-12-23 06:28:47,772 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:28:47,838 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:28:47,906 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:28:47,973 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:29:01,621 WARN L197 SmtUtils]: Spent 13.57 s on a formula simplification that was a NOOP. DAG size: 41 [2020-12-23 06:29:02,161 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:29:16,507 WARN L197 SmtUtils]: Spent 14.28 s on a formula simplification that was a NOOP. DAG size: 51 [2020-12-23 06:29:16,536 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:29:31,953 WARN L197 SmtUtils]: Spent 15.34 s on a formula simplification that was a NOOP. DAG size: 51 [2020-12-23 06:29:32,010 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 3, 7, 1] term [2020-12-23 06:29:32,030 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 06:29:32,046 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:29:32,070 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:29:32,134 INFO L443 ElimStorePlain]: Different costs {0=[v_prenex_25, v_prenex_32, |v_#memory_$Pointer$.base_47|], 51=[v_prenex_33, |v_#memory_$Pointer$.offset_48|], 69=[v_prenex_26]} [2020-12-23 06:29:32,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:29:35,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:29:35,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:29:35,612 INFO L244 Elim1Store]: Index analysis took 3412 ms [2020-12-23 06:29:45,744 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ v_prenex_28 8) (+ (select (select (store v_prenex_26 ULTIMATE.start_ldv_set_add_~le~0.base (store (select v_prenex_26 ULTIMATE.start_ldv_set_add_~le~0.base) v_prenex_24 v_prenex_29)) |~#mutexes~0.base|) |~#mutexes~0.offset|) 8)) [2020-12-23 06:29:47,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:29:52,175 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (select (select |#memory_$Pointer$.base| ULTIMATE.start___ldv_list_add_~new.base) v_prenex_28) ULTIMATE.start___ldv_list_add_~new.base) [2020-12-23 06:29:54,727 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-12-23 06:29:54,728 INFO L348 Elim1Store]: treesize reduction 143, result has 54.5 percent of original size [2020-12-23 06:29:54,729 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 189 treesize of output 194 [2020-12-23 06:29:54,733 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:31:35,710 WARN L197 SmtUtils]: Spent 1.68 m on a formula simplification. DAG size of input: 190 DAG size of output: 179 [2020-12-23 06:31:35,712 INFO L625 ElimStorePlain]: treesize reduction 76, result has 94.2 percent of original size [2020-12-23 06:31:37,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:31:39,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:31:39,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:31:39,954 INFO L244 Elim1Store]: Index analysis took 3789 ms [2020-12-23 06:31:49,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:31:51,106 WARN L197 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-12-23 06:31:51,107 INFO L348 Elim1Store]: treesize reduction 143, result has 54.5 percent of original size [2020-12-23 06:31:51,108 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 189 treesize of output 194 [2020-12-23 06:31:51,111 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.