/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.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:22:17,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:22:17,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:22:17,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:22:17,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:22:17,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:22:17,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:22:17,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:22:17,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:22:17,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:22:17,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:22:17,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:22:17,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:22:17,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:22:17,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:22:17,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:22:17,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:22:17,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:22:17,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:22:17,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:22:17,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:22:17,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:22:17,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:22:17,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:22:17,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 16:22:17,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 16:22:17,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 16:22:17,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 16:22:17,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 16:22:17,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 16:22:17,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:22:17,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:22:17,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:22:17,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:22:17,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:22:17,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:22:17,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:22:17,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:22:17,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:22:17,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:22:17,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:22:17,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 16:22:17,450 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:22:17,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:22:17,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:22:17,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:22:17,452 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:22:17,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:22:17,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:22:17,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:22:17,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:22:17,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:22:17,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:22:17,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:22:17,454 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:22:17,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:22:17,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:22:17,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:22:17,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:22:17,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:22:17,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:22:17,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:22:17,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:22:17,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:22:17,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:22:17,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:22:17,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:22:17,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:22:17,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:22:17,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:22:17,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:22:17,921 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:22:17,922 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:22:17,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex.i [2021-01-06 16:22:18,024 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3e24a2ca1/4ee067a2479e4ff19d5a30f369cb766e/FLAG3059a4d8b [2021-01-06 16:22:18,690 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:22:18,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex.i [2021-01-06 16:22:18,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3e24a2ca1/4ee067a2479e4ff19d5a30f369cb766e/FLAG3059a4d8b [2021-01-06 16:22:18,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3e24a2ca1/4ee067a2479e4ff19d5a30f369cb766e [2021-01-06 16:22:18,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:22:18,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:22:18,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:22:18,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:22:19,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:22:19,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:22:18" (1/1) ... [2021-01-06 16:22:19,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4205d68d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:19, skipping insertion in model container [2021-01-06 16:22:19,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:22:18" (1/1) ... [2021-01-06 16:22:19,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:22:19,085 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,] [2021-01-06 16:22:19,486 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.i[25842,25855] [2021-01-06 16:22:19,492 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.i[25967,25980] [2021-01-06 16:22:19,497 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.i[26082,26095] [2021-01-06 16:22:19,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:22:19,517 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,] [2021-01-06 16:22:19,625 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.i[25842,25855] [2021-01-06 16:22:19,627 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.i[25967,25980] [2021-01-06 16:22:19,629 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.i[26082,26095] [2021-01-06 16:22:19,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:22:19,739 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:22:19,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:19 WrapperNode [2021-01-06 16:22:19,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:22:19,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:22:19,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:22:19,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:22:19,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:19" (1/1) ... [2021-01-06 16:22:19,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:19" (1/1) ... [2021-01-06 16:22:19,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:22:19,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:22:19,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:22:19,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:22:19,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:19" (1/1) ... [2021-01-06 16:22:19,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:19" (1/1) ... [2021-01-06 16:22:19,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:19" (1/1) ... [2021-01-06 16:22:19,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:19" (1/1) ... [2021-01-06 16:22:19,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:19" (1/1) ... [2021-01-06 16:22:19,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:19" (1/1) ... [2021-01-06 16:22:19,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:19" (1/1) ... [2021-01-06 16:22:19,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:22:19,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:22:19,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:22:19,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:22:19,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:22:20,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-06 16:22:20,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-01-06 16:22:20,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:22:20,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-01-06 16:22:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:22:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-01-06 16:22:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:22:20,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:22:20,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:22:21,012 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:22:21,012 INFO L299 CfgBuilder]: Removed 82 assume(true) statements. [2021-01-06 16:22:21,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:22:21 BoogieIcfgContainer [2021-01-06 16:22:21,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:22:21,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:22:21,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:22:21,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:22:21,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:22:18" (1/3) ... [2021-01-06 16:22:21,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ffac965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:22:21, skipping insertion in model container [2021-01-06 16:22:21,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:19" (2/3) ... [2021-01-06 16:22:21,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ffac965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:22:21, skipping insertion in model container [2021-01-06 16:22:21,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:22:21" (3/3) ... [2021-01-06 16:22:21,022 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex.i [2021-01-06 16:22:21,029 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:22:21,034 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2021-01-06 16:22:21,052 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-01-06 16:22:21,076 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:22:21,077 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:22:21,077 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:22:21,077 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:22:21,077 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:22:21,077 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:22:21,078 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:22:21,078 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:22:21,095 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2021-01-06 16:22:21,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 16:22:21,100 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:21,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:22:21,102 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]=== [2021-01-06 16:22:21,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:21,108 INFO L82 PathProgramCache]: Analyzing trace with hash 912087840, now seen corresponding path program 1 times [2021-01-06 16:22:21,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:21,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726228842] [2021-01-06 16:22:21,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:21,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:22:21,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726228842] [2021-01-06 16:22:21,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:21,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:22:21,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100886530] [2021-01-06 16:22:21,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:22:21,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:21,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:22:21,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:22:21,305 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 2 states. [2021-01-06 16:22:21,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:21,334 INFO L93 Difference]: Finished difference Result 172 states and 239 transitions. [2021-01-06 16:22:21,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:22:21,336 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2021-01-06 16:22:21,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:21,346 INFO L225 Difference]: With dead ends: 172 [2021-01-06 16:22:21,346 INFO L226 Difference]: Without dead ends: 84 [2021-01-06 16:22:21,350 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 [2021-01-06 16:22:21,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-01-06 16:22:21,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-01-06 16:22:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-01-06 16:22:21,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2021-01-06 16:22:21,393 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 14 [2021-01-06 16:22:21,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:21,394 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2021-01-06 16:22:21,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:22:21,394 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2021-01-06 16:22:21,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 16:22:21,395 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:21,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:22:21,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:22:21,396 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]=== [2021-01-06 16:22:21,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:21,397 INFO L82 PathProgramCache]: Analyzing trace with hash 793647061, now seen corresponding path program 1 times [2021-01-06 16:22:21,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:21,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730585313] [2021-01-06 16:22:21,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:21,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:22:21,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730585313] [2021-01-06 16:22:21,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:21,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:22:21,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701390511] [2021-01-06 16:22:21,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:22:21,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:21,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:22:21,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:22:21,505 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand 4 states. [2021-01-06 16:22:21,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:21,616 INFO L93 Difference]: Finished difference Result 135 states and 157 transitions. [2021-01-06 16:22:21,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:22:21,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-06 16:22:21,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:21,621 INFO L225 Difference]: With dead ends: 135 [2021-01-06 16:22:21,621 INFO L226 Difference]: Without dead ends: 131 [2021-01-06 16:22:21,624 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 [2021-01-06 16:22:21,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-01-06 16:22:21,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 88. [2021-01-06 16:22:21,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-01-06 16:22:21,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 105 transitions. [2021-01-06 16:22:21,647 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 105 transitions. Word has length 14 [2021-01-06 16:22:21,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:21,648 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 105 transitions. [2021-01-06 16:22:21,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:22:21,648 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 105 transitions. [2021-01-06 16:22:21,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 16:22:21,649 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:21,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:22:21,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:22:21,651 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]=== [2021-01-06 16:22:21,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:21,654 INFO L82 PathProgramCache]: Analyzing trace with hash 795255775, now seen corresponding path program 1 times [2021-01-06 16:22:21,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:21,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123106609] [2021-01-06 16:22:21,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:21,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:22:21,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123106609] [2021-01-06 16:22:21,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:21,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:22:21,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794930312] [2021-01-06 16:22:21,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:22:21,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:21,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:22:21,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:22:21,843 INFO L87 Difference]: Start difference. First operand 88 states and 105 transitions. Second operand 4 states. [2021-01-06 16:22:22,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:22,143 INFO L93 Difference]: Finished difference Result 219 states and 262 transitions. [2021-01-06 16:22:22,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 16:22:22,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-06 16:22:22,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:22,146 INFO L225 Difference]: With dead ends: 219 [2021-01-06 16:22:22,146 INFO L226 Difference]: Without dead ends: 140 [2021-01-06 16:22:22,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:22:22,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-01-06 16:22:22,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 101. [2021-01-06 16:22:22,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-01-06 16:22:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 118 transitions. [2021-01-06 16:22:22,160 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 118 transitions. Word has length 14 [2021-01-06 16:22:22,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:22,160 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 118 transitions. [2021-01-06 16:22:22,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:22:22,160 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 118 transitions. [2021-01-06 16:22:22,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 16:22:22,162 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:22,162 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] [2021-01-06 16:22:22,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 16:22:22,162 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]=== [2021-01-06 16:22:22,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:22,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1115638045, now seen corresponding path program 1 times [2021-01-06 16:22:22,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:22,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196664867] [2021-01-06 16:22:22,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:22,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:22:22,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196664867] [2021-01-06 16:22:22,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:22,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-01-06 16:22:22,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640353229] [2021-01-06 16:22:22,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 16:22:22,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:22,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 16:22:22,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-01-06 16:22:22,606 INFO L87 Difference]: Start difference. First operand 101 states and 118 transitions. Second operand 15 states. [2021-01-06 16:22:24,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:24,050 INFO L93 Difference]: Finished difference Result 224 states and 264 transitions. [2021-01-06 16:22:24,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 16:22:24,051 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2021-01-06 16:22:24,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:24,054 INFO L225 Difference]: With dead ends: 224 [2021-01-06 16:22:24,054 INFO L226 Difference]: Without dead ends: 173 [2021-01-06 16:22:24,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2021-01-06 16:22:24,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-01-06 16:22:24,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 106. [2021-01-06 16:22:24,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-01-06 16:22:24,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 125 transitions. [2021-01-06 16:22:24,079 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 125 transitions. Word has length 28 [2021-01-06 16:22:24,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:24,079 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 125 transitions. [2021-01-06 16:22:24,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 16:22:24,079 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 125 transitions. [2021-01-06 16:22:24,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 16:22:24,081 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:24,081 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] [2021-01-06 16:22:24,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 16:22:24,081 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]=== [2021-01-06 16:22:24,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:24,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1190752804, now seen corresponding path program 1 times [2021-01-06 16:22:24,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:24,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820761650] [2021-01-06 16:22:24,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:24,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:22:24,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820761650] [2021-01-06 16:22:24,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827773759] [2021-01-06 16:22:24,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:22:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:24,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 78 conjunts are in the unsatisfiable core [2021-01-06 16:22:24,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:22:25,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:25,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:25,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:25,444 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2021-01-06 16:22:25,465 INFO L348 Elim1Store]: treesize reduction 188, result has 55.0 percent of original size [2021-01-06 16:22:25,466 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 [2021-01-06 16:22:25,481 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:25,728 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2021-01-06 16:22:25,729 INFO L625 ElimStorePlain]: treesize reduction 142, result has 72.3 percent of original size [2021-01-06 16:22:25,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:25,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:25,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:25,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:25,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:25,937 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-01-06 16:22:25,937 INFO L348 Elim1Store]: treesize reduction 62, result has 73.5 percent of original size [2021-01-06 16:22:25,938 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 [2021-01-06 16:22:25,945 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:26,099 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2021-01-06 16:22:26,100 INFO L625 ElimStorePlain]: treesize reduction 162, result has 46.9 percent of original size [2021-01-06 16:22:26,116 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 16:22:26,116 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:647, output treesize:154 [2021-01-06 16:22:26,378 INFO L348 Elim1Store]: treesize reduction 18, result has 81.8 percent of original size [2021-01-06 16:22:26,378 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 [2021-01-06 16:22:26,389 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-06 16:22:26,406 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:26,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:26,420 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:26,421 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 [2021-01-06 16:22:26,424 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:26,433 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:26,436 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 16:22:26,436 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:186, output treesize:15 [2021-01-06 16:22:26,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:22:26,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:22:26,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-01-06 16:22:26,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922039321] [2021-01-06 16:22:26,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 16:22:26,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:26,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 16:22:26,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-01-06 16:22:26,497 INFO L87 Difference]: Start difference. First operand 106 states and 125 transitions. Second operand 14 states. [2021-01-06 16:22:26,932 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-01-06 16:22:27,115 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-01-06 16:22:27,335 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2021-01-06 16:22:28,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:28,478 INFO L93 Difference]: Finished difference Result 292 states and 343 transitions. [2021-01-06 16:22:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 16:22:28,479 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2021-01-06 16:22:28,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:28,480 INFO L225 Difference]: With dead ends: 292 [2021-01-06 16:22:28,480 INFO L226 Difference]: Without dead ends: 232 [2021-01-06 16:22:28,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-01-06 16:22:28,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-01-06 16:22:28,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 122. [2021-01-06 16:22:28,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2021-01-06 16:22:28,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 141 transitions. [2021-01-06 16:22:28,498 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 141 transitions. Word has length 31 [2021-01-06 16:22:28,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:28,499 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 141 transitions. [2021-01-06 16:22:28,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 16:22:28,499 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 141 transitions. [2021-01-06 16:22:28,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 16:22:28,500 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:28,500 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] [2021-01-06 16:22:28,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:22:28,716 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]=== [2021-01-06 16:22:28,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:28,718 INFO L82 PathProgramCache]: Analyzing trace with hash 251401029, now seen corresponding path program 1 times [2021-01-06 16:22:28,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:28,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301828606] [2021-01-06 16:22:28,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:22:28,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301828606] [2021-01-06 16:22:28,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:28,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:22:28,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339618129] [2021-01-06 16:22:28,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:22:28,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:28,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:22:28,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:22:28,799 INFO L87 Difference]: Start difference. First operand 122 states and 141 transitions. Second operand 4 states. [2021-01-06 16:22:28,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:28,868 INFO L93 Difference]: Finished difference Result 201 states and 232 transitions. [2021-01-06 16:22:28,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:22:28,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2021-01-06 16:22:28,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:28,869 INFO L225 Difference]: With dead ends: 201 [2021-01-06 16:22:28,869 INFO L226 Difference]: Without dead ends: 129 [2021-01-06 16:22:28,870 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 [2021-01-06 16:22:28,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-01-06 16:22:28,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 97. [2021-01-06 16:22:28,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-01-06 16:22:28,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2021-01-06 16:22:28,890 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 34 [2021-01-06 16:22:28,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:28,891 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2021-01-06 16:22:28,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:22:28,891 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2021-01-06 16:22:28,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 16:22:28,899 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:28,899 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] [2021-01-06 16:22:28,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 16:22:28,900 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]=== [2021-01-06 16:22:28,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:28,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1130333060, now seen corresponding path program 1 times [2021-01-06 16:22:28,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:28,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085008758] [2021-01-06 16:22:28,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:29,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 16:22:29,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085008758] [2021-01-06 16:22:29,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80869948] [2021-01-06 16:22:29,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:22:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:29,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 170 conjunts are in the unsatisfiable core [2021-01-06 16:22:29,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:22:29,791 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-06 16:22:29,792 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:29,798 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:29,798 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 16:22:29,799 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-06 16:22:29,876 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:29,877 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-01-06 16:22:29,879 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:22:29,884 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:29,890 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:29,891 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 16:22:29,892 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2021-01-06 16:22:30,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:30,375 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2021-01-06 16:22:30,376 INFO L348 Elim1Store]: treesize reduction 36, result has 77.5 percent of original size [2021-01-06 16:22:30,377 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 [2021-01-06 16:22:30,381 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:30,559 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2021-01-06 16:22:30,560 INFO L625 ElimStorePlain]: treesize reduction 74, result has 74.1 percent of original size [2021-01-06 16:22:30,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:30,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:30,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:30,722 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2021-01-06 16:22:30,724 INFO L348 Elim1Store]: treesize reduction 103, result has 35.6 percent of original size [2021-01-06 16:22:30,724 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 [2021-01-06 16:22:30,732 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:30,864 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-01-06 16:22:30,865 INFO L625 ElimStorePlain]: treesize reduction 18, result has 87.8 percent of original size [2021-01-06 16:22:30,874 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:22:30,876 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 16:22:30,876 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:287, output treesize:221 [2021-01-06 16:22:31,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 16:22:31,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:22:31,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 33 [2021-01-06 16:22:31,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533541392] [2021-01-06 16:22:31,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-01-06 16:22:31,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:31,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-01-06 16:22:31,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1039, Unknown=0, NotChecked=0, Total=1122 [2021-01-06 16:22:31,671 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand 34 states. [2021-01-06 16:22:32,684 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-01-06 16:22:33,210 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2021-01-06 16:22:33,548 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2021-01-06 16:22:33,896 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2021-01-06 16:22:34,234 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2021-01-06 16:22:34,545 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2021-01-06 16:22:34,821 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2021-01-06 16:22:35,073 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2021-01-06 16:22:35,334 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2021-01-06 16:22:35,586 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2021-01-06 16:22:35,848 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2021-01-06 16:22:36,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:36,922 INFO L93 Difference]: Finished difference Result 163 states and 188 transitions. [2021-01-06 16:22:36,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 16:22:36,922 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 44 [2021-01-06 16:22:36,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:36,924 INFO L225 Difference]: With dead ends: 163 [2021-01-06 16:22:36,924 INFO L226 Difference]: Without dead ends: 104 [2021-01-06 16:22:36,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=364, Invalid=2498, Unknown=0, NotChecked=0, Total=2862 [2021-01-06 16:22:36,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-01-06 16:22:36,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 78. [2021-01-06 16:22:36,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-01-06 16:22:36,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2021-01-06 16:22:36,935 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 44 [2021-01-06 16:22:36,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:36,935 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2021-01-06 16:22:36,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2021-01-06 16:22:36,935 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2021-01-06 16:22:36,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-06 16:22:36,936 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:36,936 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] [2021-01-06 16:22:37,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:22:37,152 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]=== [2021-01-06 16:22:37,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:37,154 INFO L82 PathProgramCache]: Analyzing trace with hash 786851695, now seen corresponding path program 1 times [2021-01-06 16:22:37,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:37,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493425635] [2021-01-06 16:22:37,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 16:22:37,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493425635] [2021-01-06 16:22:37,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:37,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 16:22:37,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125161763] [2021-01-06 16:22:37,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 16:22:37,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:37,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 16:22:37,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-01-06 16:22:37,343 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 8 states. [2021-01-06 16:22:37,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:37,738 INFO L93 Difference]: Finished difference Result 178 states and 205 transitions. [2021-01-06 16:22:37,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 16:22:37,739 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2021-01-06 16:22:37,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:37,740 INFO L225 Difference]: With dead ends: 178 [2021-01-06 16:22:37,740 INFO L226 Difference]: Without dead ends: 146 [2021-01-06 16:22:37,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-01-06 16:22:37,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-01-06 16:22:37,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 84. [2021-01-06 16:22:37,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-01-06 16:22:37,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2021-01-06 16:22:37,751 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 48 [2021-01-06 16:22:37,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:37,752 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2021-01-06 16:22:37,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 16:22:37,752 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2021-01-06 16:22:37,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-06 16:22:37,753 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:37,753 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] [2021-01-06 16:22:37,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 16:22:37,753 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]=== [2021-01-06 16:22:37,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:37,754 INFO L82 PathProgramCache]: Analyzing trace with hash 788460409, now seen corresponding path program 1 times [2021-01-06 16:22:37,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:37,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347713630] [2021-01-06 16:22:37,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:37,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 16:22:37,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347713630] [2021-01-06 16:22:37,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:37,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:22:37,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327323999] [2021-01-06 16:22:37,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:22:37,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:37,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:22:37,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:22:37,835 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand 4 states. [2021-01-06 16:22:37,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:37,890 INFO L93 Difference]: Finished difference Result 115 states and 129 transitions. [2021-01-06 16:22:37,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:22:37,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2021-01-06 16:22:37,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:37,893 INFO L225 Difference]: With dead ends: 115 [2021-01-06 16:22:37,893 INFO L226 Difference]: Without dead ends: 111 [2021-01-06 16:22:37,894 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 [2021-01-06 16:22:37,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-01-06 16:22:37,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 88. [2021-01-06 16:22:37,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-01-06 16:22:37,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2021-01-06 16:22:37,905 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 48 [2021-01-06 16:22:37,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:37,906 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2021-01-06 16:22:37,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:22:37,906 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2021-01-06 16:22:37,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 16:22:37,907 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:37,907 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] [2021-01-06 16:22:37,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 16:22:37,908 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]=== [2021-01-06 16:22:37,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:37,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1434516829, now seen corresponding path program 1 times [2021-01-06 16:22:37,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:37,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348994612] [2021-01-06 16:22:37,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:38,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 16:22:38,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348994612] [2021-01-06 16:22:38,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087492886] [2021-01-06 16:22:38,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:22:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:38,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 126 conjunts are in the unsatisfiable core [2021-01-06 16:22:38,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:22:38,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:38,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:38,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 16:22:38,914 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-01-06 16:22:38,915 INFO L348 Elim1Store]: treesize reduction 39, result has 78.1 percent of original size [2021-01-06 16:22:38,916 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 [2021-01-06 16:22:38,921 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:39,033 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-01-06 16:22:39,034 INFO L625 ElimStorePlain]: treesize reduction 86, result has 47.2 percent of original size [2021-01-06 16:22:39,042 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:22:39,044 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:22:39,047 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. [2021-01-06 16:22:39,048 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:149, output treesize:54 [2021-01-06 16:22:39,049 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:22:39,106 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:22:39,160 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:22:50,786 WARN L197 SmtUtils]: Spent 11.57 s on a formula simplification that was a NOOP. DAG size: 39 [2021-01-06 16:22:51,048 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:22:51,103 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:22:51,155 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:22:51,222 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:05,019 WARN L197 SmtUtils]: Spent 13.74 s on a formula simplification that was a NOOP. DAG size: 41 [2021-01-06 16:23:05,469 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:20,055 WARN L197 SmtUtils]: Spent 14.54 s on a formula simplification that was a NOOP. DAG size: 51 [2021-01-06 16:23:20,075 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:35,258 WARN L197 SmtUtils]: Spent 15.13 s on a formula simplification that was a NOOP. DAG size: 51 [2021-01-06 16:23:35,292 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 3, 7, 1] term [2021-01-06 16:23:35,292 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-06 16:23:35,307 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:35,327 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:35,380 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]} [2021-01-06 16:23:38,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:23:39,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:23:39,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:23:39,548 INFO L244 Elim1Store]: Index analysis took 3860 ms [2021-01-06 16:23:46,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:23:48,718 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_$Pointer$.base| v_prenex_23) (+ (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)) ULTIMATE.start___ldv_list_add_~new.base) [2021-01-06 16:23:55,937 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2021-01-06 16:23:55,938 INFO L348 Elim1Store]: treesize reduction 143, result has 54.5 percent of original size [2021-01-06 16:23:55,938 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 [2021-01-06 16:23:55,942 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 16:25:39,327 WARN L197 SmtUtils]: Spent 1.72 m on a formula simplification. DAG size of input: 190 DAG size of output: 179 [2021-01-06 16:25:39,328 INFO L625 ElimStorePlain]: treesize reduction 76, result has 94.2 percent of original size [2021-01-06 16:25:40,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:25:42,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:25:42,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:25:42,941 INFO L244 Elim1Store]: Index analysis took 3379 ms [2021-01-06 16:25:50,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:25:52,842 WARN L197 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2021-01-06 16:25:52,843 INFO L348 Elim1Store]: treesize reduction 143, result has 54.5 percent of original size [2021-01-06 16:25:52,844 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 [2021-01-06 16:25:52,848 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.