/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-178dd20 [2021-01-06 16:22:27,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:22:27,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:22:27,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:22:27,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:22:27,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:22:27,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:22:27,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:22:27,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:22:27,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:22:27,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:22:27,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:22:27,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:22:27,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:22:27,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:22:27,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:22:27,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:22:27,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:22:27,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:22:27,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:22:27,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:22:27,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:22:27,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:22:27,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:22:27,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:22:27,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:22:27,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:22:27,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:22:27,506 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 16:22:27,536 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:22:27,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:22:27,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:22:27,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:22:27,539 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:22:27,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:22:27,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:22:27,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:22:27,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:22:27,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:22:27,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:22:27,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:22:27,541 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:22:27,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:22:27,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:22:27,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:22:27,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:22:27,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:22:27,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:22:27,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:22:27,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:22:27,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:22:27,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:22:27,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:22:27,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:22:27,544 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:22:27,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:22:27,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:22:27,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:22:27,951 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:22:27,952 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:22:27,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2021-01-06 16:22:28,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8f42d3a4d/7f99ee2896c2408ead4a1e3676948242/FLAG2a04f6bbb [2021-01-06 16:22:28,753 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:22:28,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2021-01-06 16:22:28,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8f42d3a4d/7f99ee2896c2408ead4a1e3676948242/FLAG2a04f6bbb [2021-01-06 16:22:29,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8f42d3a4d/7f99ee2896c2408ead4a1e3676948242 [2021-01-06 16:22:29,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:22:29,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:22:29,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:22:29,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:22:29,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:22:29,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:22:29" (1/1) ... [2021-01-06 16:22:29,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c8bea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:29, skipping insertion in model container [2021-01-06 16:22:29,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:22:29" (1/1) ... [2021-01-06 16:22:29,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:22:29,161 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 16:22:29,661 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] [2021-01-06 16:22:29,666 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] [2021-01-06 16:22:29,668 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] [2021-01-06 16:22:29,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:22:29,683 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 16:22:29,736 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] [2021-01-06 16:22:29,737 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] [2021-01-06 16:22:29,739 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] [2021-01-06 16:22:29,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:22:29,838 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:22:29,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:29 WrapperNode [2021-01-06 16:22:29,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:22:29,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:22:29,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:22:29,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:22:29,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:29" (1/1) ... [2021-01-06 16:22:29,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:29" (1/1) ... [2021-01-06 16:22:29,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:22:29,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:22:29,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:22:29,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:22:29,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:29" (1/1) ... [2021-01-06 16:22:29,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:29" (1/1) ... [2021-01-06 16:22:29,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:29" (1/1) ... [2021-01-06 16:22:29,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:29" (1/1) ... [2021-01-06 16:22:29,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:29" (1/1) ... [2021-01-06 16:22:29,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:29" (1/1) ... [2021-01-06 16:22:29,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:29" (1/1) ... [2021-01-06 16:22:29,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:22:29,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:22:29,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:22:29,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:22:29,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:29" (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 16:22:30,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-06 16:22:30,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-01-06 16:22:30,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:22:30,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-01-06 16:22:30,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:22:30,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-01-06 16:22:30,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:22:30,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:22:30,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:22:30,926 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:22:30,926 INFO L299 CfgBuilder]: Removed 82 assume(true) statements. [2021-01-06 16:22:30,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:22:30 BoogieIcfgContainer [2021-01-06 16:22:30,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:22:30,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:22:30,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:22:30,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:22:30,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:22:29" (1/3) ... [2021-01-06 16:22:30,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690c399a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:22:30, skipping insertion in model container [2021-01-06 16:22:30,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:29" (2/3) ... [2021-01-06 16:22:30,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690c399a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:22:30, skipping insertion in model container [2021-01-06 16:22:30,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:22:30" (3/3) ... [2021-01-06 16:22:30,941 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_double_unlock.i [2021-01-06 16:22:30,948 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:22:30,953 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2021-01-06 16:22:30,971 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-01-06 16:22:31,000 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:22:31,000 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:22:31,000 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:22:31,000 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:22:31,000 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:22:31,001 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:22:31,001 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:22:31,001 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:22:31,019 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2021-01-06 16:22:31,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 16:22:31,025 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:31,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:22:31,026 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 16:22:31,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:31,033 INFO L82 PathProgramCache]: Analyzing trace with hash 912087840, now seen corresponding path program 1 times [2021-01-06 16:22:31,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:31,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508469264] [2021-01-06 16:22:31,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:31,207 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 16:22:31,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508469264] [2021-01-06 16:22:31,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:31,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:22:31,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265867263] [2021-01-06 16:22:31,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:22:31,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:31,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:22:31,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:22:31,233 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 2 states. [2021-01-06 16:22:31,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:31,261 INFO L93 Difference]: Finished difference Result 172 states and 239 transitions. [2021-01-06 16:22:31,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:22:31,262 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2021-01-06 16:22:31,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:31,272 INFO L225 Difference]: With dead ends: 172 [2021-01-06 16:22:31,272 INFO L226 Difference]: Without dead ends: 84 [2021-01-06 16:22:31,275 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 16:22:31,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-01-06 16:22:31,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-01-06 16:22:31,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-01-06 16:22:31,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2021-01-06 16:22:31,320 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 14 [2021-01-06 16:22:31,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:31,320 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2021-01-06 16:22:31,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:22:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2021-01-06 16:22:31,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 16:22:31,321 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:31,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:22:31,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:22:31,322 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 16:22:31,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:31,323 INFO L82 PathProgramCache]: Analyzing trace with hash 793647061, now seen corresponding path program 1 times [2021-01-06 16:22:31,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:31,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579771130] [2021-01-06 16:22:31,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:31,426 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 16:22:31,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579771130] [2021-01-06 16:22:31,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:31,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:22:31,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595774587] [2021-01-06 16:22:31,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:22:31,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:31,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:22:31,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:22:31,432 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand 4 states. [2021-01-06 16:22:31,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:31,571 INFO L93 Difference]: Finished difference Result 135 states and 157 transitions. [2021-01-06 16:22:31,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:22:31,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-06 16:22:31,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:31,574 INFO L225 Difference]: With dead ends: 135 [2021-01-06 16:22:31,575 INFO L226 Difference]: Without dead ends: 131 [2021-01-06 16:22:31,576 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 16:22:31,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-01-06 16:22:31,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 88. [2021-01-06 16:22:31,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-01-06 16:22:31,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 105 transitions. [2021-01-06 16:22:31,590 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 105 transitions. Word has length 14 [2021-01-06 16:22:31,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:31,591 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 105 transitions. [2021-01-06 16:22:31,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:22:31,591 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 105 transitions. [2021-01-06 16:22:31,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 16:22:31,592 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:31,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:22:31,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:22:31,593 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 16:22:31,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:31,594 INFO L82 PathProgramCache]: Analyzing trace with hash 795255775, now seen corresponding path program 1 times [2021-01-06 16:22:31,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:31,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817431290] [2021-01-06 16:22:31,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:31,753 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 16:22:31,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817431290] [2021-01-06 16:22:31,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:31,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:22:31,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471015236] [2021-01-06 16:22:31,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:22:31,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:31,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:22:31,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:22:31,757 INFO L87 Difference]: Start difference. First operand 88 states and 105 transitions. Second operand 4 states. [2021-01-06 16:22:32,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:32,091 INFO L93 Difference]: Finished difference Result 219 states and 262 transitions. [2021-01-06 16:22:32,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 16:22:32,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-06 16:22:32,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:32,094 INFO L225 Difference]: With dead ends: 219 [2021-01-06 16:22:32,094 INFO L226 Difference]: Without dead ends: 140 [2021-01-06 16:22:32,095 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 16:22:32,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-01-06 16:22:32,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 101. [2021-01-06 16:22:32,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-01-06 16:22:32,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 118 transitions. [2021-01-06 16:22:32,111 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 118 transitions. Word has length 14 [2021-01-06 16:22:32,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:32,111 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 118 transitions. [2021-01-06 16:22:32,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:22:32,112 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 118 transitions. [2021-01-06 16:22:32,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 16:22:32,113 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:32,113 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 16:22:32,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 16:22:32,114 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 16:22:32,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:32,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1115638045, now seen corresponding path program 1 times [2021-01-06 16:22:32,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:32,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137738049] [2021-01-06 16:22:32,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:32,759 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 16:22:32,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137738049] [2021-01-06 16:22:32,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:32,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-01-06 16:22:32,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691345490] [2021-01-06 16:22:32,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 16:22:32,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:32,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 16:22:32,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-01-06 16:22:32,770 INFO L87 Difference]: Start difference. First operand 101 states and 118 transitions. Second operand 15 states. [2021-01-06 16:22:34,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:34,073 INFO L93 Difference]: Finished difference Result 211 states and 247 transitions. [2021-01-06 16:22:34,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 16:22:34,074 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2021-01-06 16:22:34,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:34,076 INFO L225 Difference]: With dead ends: 211 [2021-01-06 16:22:34,076 INFO L226 Difference]: Without dead ends: 160 [2021-01-06 16:22:34,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2021-01-06 16:22:34,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-01-06 16:22:34,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 103. [2021-01-06 16:22:34,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-01-06 16:22:34,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2021-01-06 16:22:34,093 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 28 [2021-01-06 16:22:34,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:34,093 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2021-01-06 16:22:34,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 16:22:34,093 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2021-01-06 16:22:34,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 16:22:34,095 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:34,095 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 16:22:34,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 16:22:34,095 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 16:22:34,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:34,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1190752804, now seen corresponding path program 1 times [2021-01-06 16:22:34,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:34,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135324042] [2021-01-06 16:22:34,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:34,429 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 16:22:34,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135324042] [2021-01-06 16:22:34,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415814298] [2021-01-06 16:22:34,432 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 16:22:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:34,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 78 conjunts are in the unsatisfiable core [2021-01-06 16:22:34,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:22:35,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:35,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:35,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:35,293 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2021-01-06 16:22:35,294 INFO L348 Elim1Store]: treesize reduction 188, result has 55.0 percent of original size [2021-01-06 16:22:35,295 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 16:22:35,304 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:35,578 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2021-01-06 16:22:35,579 INFO L625 ElimStorePlain]: treesize reduction 142, result has 72.3 percent of original size [2021-01-06 16:22:35,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:35,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:35,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:35,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:35,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:35,804 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-01-06 16:22:35,805 INFO L348 Elim1Store]: treesize reduction 62, result has 73.5 percent of original size [2021-01-06 16:22:35,806 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 16:22:35,826 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:36,000 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2021-01-06 16:22:36,002 INFO L625 ElimStorePlain]: treesize reduction 162, result has 46.9 percent of original size [2021-01-06 16:22:36,027 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 16:22:36,027 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:647, output treesize:154 [2021-01-06 16:22:36,306 INFO L348 Elim1Store]: treesize reduction 18, result has 81.8 percent of original size [2021-01-06 16:22:36,307 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 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 16:22:36,320 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 16:22:36,341 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:36,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:36,355 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:36,355 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 16:22:36,362 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:36,372 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:36,375 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 16:22:36,375 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:186, output treesize:15 [2021-01-06 16:22:36,423 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 16:22:36,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:22:36,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-01-06 16:22:36,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108987479] [2021-01-06 16:22:36,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 16:22:36,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:36,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 16:22:36,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-01-06 16:22:36,426 INFO L87 Difference]: Start difference. First operand 103 states and 121 transitions. Second operand 14 states. [2021-01-06 16:22:37,097 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2021-01-06 16:22:37,373 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2021-01-06 16:22:38,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:38,881 INFO L93 Difference]: Finished difference Result 286 states and 335 transitions. [2021-01-06 16:22:38,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 16:22:38,882 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2021-01-06 16:22:38,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:38,886 INFO L225 Difference]: With dead ends: 286 [2021-01-06 16:22:38,886 INFO L226 Difference]: Without dead ends: 229 [2021-01-06 16:22:38,888 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 16:22:38,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-01-06 16:22:38,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 119. [2021-01-06 16:22:38,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2021-01-06 16:22:38,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2021-01-06 16:22:38,911 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 31 [2021-01-06 16:22:38,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:38,912 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2021-01-06 16:22:38,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 16:22:38,912 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2021-01-06 16:22:38,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 16:22:38,913 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:38,913 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 16:22:39,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:22:39,130 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 16:22:39,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:39,131 INFO L82 PathProgramCache]: Analyzing trace with hash 251401029, now seen corresponding path program 1 times [2021-01-06 16:22:39,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:39,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086325411] [2021-01-06 16:22:39,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:39,204 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 16:22:39,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086325411] [2021-01-06 16:22:39,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:39,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:22:39,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278305980] [2021-01-06 16:22:39,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:22:39,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:39,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:22:39,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:22:39,211 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 4 states. [2021-01-06 16:22:39,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:39,284 INFO L93 Difference]: Finished difference Result 205 states and 240 transitions. [2021-01-06 16:22:39,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:22:39,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2021-01-06 16:22:39,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:39,287 INFO L225 Difference]: With dead ends: 205 [2021-01-06 16:22:39,287 INFO L226 Difference]: Without dead ends: 136 [2021-01-06 16:22:39,288 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 16:22:39,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-01-06 16:22:39,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 97. [2021-01-06 16:22:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-01-06 16:22:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2021-01-06 16:22:39,304 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 34 [2021-01-06 16:22:39,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:39,304 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2021-01-06 16:22:39,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:22:39,305 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2021-01-06 16:22:39,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 16:22:39,306 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:39,306 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] [2021-01-06 16:22:39,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 16:22:39,307 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 16:22:39,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:39,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1769595066, now seen corresponding path program 1 times [2021-01-06 16:22:39,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:39,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084604900] [2021-01-06 16:22:39,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:39,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 16:22:39,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084604900] [2021-01-06 16:22:39,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:39,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:22:39,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388612255] [2021-01-06 16:22:39,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:22:39,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:39,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:22:39,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:22:39,373 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand 4 states. [2021-01-06 16:22:39,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:39,444 INFO L93 Difference]: Finished difference Result 136 states and 156 transitions. [2021-01-06 16:22:39,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:22:39,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2021-01-06 16:22:39,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:39,446 INFO L225 Difference]: With dead ends: 136 [2021-01-06 16:22:39,446 INFO L226 Difference]: Without dead ends: 132 [2021-01-06 16:22:39,447 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 16:22:39,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-01-06 16:22:39,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 103. [2021-01-06 16:22:39,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-01-06 16:22:39,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2021-01-06 16:22:39,462 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 41 [2021-01-06 16:22:39,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:39,463 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2021-01-06 16:22:39,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:22:39,463 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2021-01-06 16:22:39,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 16:22:39,465 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:39,465 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 16:22:39,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 16:22:39,465 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 16:22:39,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:39,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1130333060, now seen corresponding path program 1 times [2021-01-06 16:22:39,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:39,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593553146] [2021-01-06 16:22:39,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:40,210 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 16:22:40,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593553146] [2021-01-06 16:22:40,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793627699] [2021-01-06 16:22:40,211 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 16:22:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:40,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 170 conjunts are in the unsatisfiable core [2021-01-06 16:22:40,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:22:40,446 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 16:22:40,447 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:40,453 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:40,454 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 16:22:40,454 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-06 16:22:40,535 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:40,535 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 16:22:40,538 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:22:40,543 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:40,550 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:40,551 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 16:22:40,551 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2021-01-06 16:22:40,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:41,044 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2021-01-06 16:22:41,045 INFO L348 Elim1Store]: treesize reduction 36, result has 77.5 percent of original size [2021-01-06 16:22:41,045 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 16:22:41,050 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:41,258 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2021-01-06 16:22:41,259 INFO L625 ElimStorePlain]: treesize reduction 74, result has 74.1 percent of original size [2021-01-06 16:22:41,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:41,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:41,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:41,392 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2021-01-06 16:22:41,392 INFO L348 Elim1Store]: treesize reduction 103, result has 35.6 percent of original size [2021-01-06 16:22:41,393 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 16:22:41,396 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:41,523 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-01-06 16:22:41,524 INFO L625 ElimStorePlain]: treesize reduction 18, result has 87.8 percent of original size [2021-01-06 16:22:41,531 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:22:41,533 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 16:22:41,533 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:287, output treesize:221 [2021-01-06 16:22:42,359 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 16:22:42,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:22:42,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 33 [2021-01-06 16:22:42,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861090040] [2021-01-06 16:22:42,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-01-06 16:22:42,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:42,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-01-06 16:22:42,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1039, Unknown=0, NotChecked=0, Total=1122 [2021-01-06 16:22:42,362 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand 34 states. [2021-01-06 16:22:43,339 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-01-06 16:22:43,870 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2021-01-06 16:22:44,256 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2021-01-06 16:22:44,656 WARN L197 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2021-01-06 16:22:45,000 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2021-01-06 16:22:45,309 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2021-01-06 16:22:45,615 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2021-01-06 16:22:45,876 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2021-01-06 16:22:46,143 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2021-01-06 16:22:46,418 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2021-01-06 16:22:46,688 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2021-01-06 16:22:47,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:47,636 INFO L93 Difference]: Finished difference Result 175 states and 201 transitions. [2021-01-06 16:22:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 16:22:47,637 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 44 [2021-01-06 16:22:47,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:47,638 INFO L225 Difference]: With dead ends: 175 [2021-01-06 16:22:47,638 INFO L226 Difference]: Without dead ends: 110 [2021-01-06 16:22:47,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=364, Invalid=2498, Unknown=0, NotChecked=0, Total=2862 [2021-01-06 16:22:47,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-01-06 16:22:47,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 82. [2021-01-06 16:22:47,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-01-06 16:22:47,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2021-01-06 16:22:47,649 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 44 [2021-01-06 16:22:47,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:47,650 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2021-01-06 16:22:47,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2021-01-06 16:22:47,650 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2021-01-06 16:22:47,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-06 16:22:47,651 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:47,651 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 16:22:47,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:22:47,867 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 16:22:47,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:47,868 INFO L82 PathProgramCache]: Analyzing trace with hash 786851695, now seen corresponding path program 1 times [2021-01-06 16:22:47,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:47,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505791277] [2021-01-06 16:22:47,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:48,021 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 16:22:48,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505791277] [2021-01-06 16:22:48,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:48,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 16:22:48,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973182314] [2021-01-06 16:22:48,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 16:22:48,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:48,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 16:22:48,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-01-06 16:22:48,023 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand 8 states. [2021-01-06 16:22:48,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:48,433 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2021-01-06 16:22:48,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 16:22:48,434 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2021-01-06 16:22:48,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:48,435 INFO L225 Difference]: With dead ends: 182 [2021-01-06 16:22:48,435 INFO L226 Difference]: Without dead ends: 148 [2021-01-06 16:22:48,436 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 16:22:48,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-01-06 16:22:48,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 88. [2021-01-06 16:22:48,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-01-06 16:22:48,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2021-01-06 16:22:48,446 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 48 [2021-01-06 16:22:48,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:48,447 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2021-01-06 16:22:48,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 16:22:48,447 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2021-01-06 16:22:48,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 16:22:48,448 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:48,448 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 16:22:48,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 16:22:48,449 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 16:22:48,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:48,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1434516829, now seen corresponding path program 1 times [2021-01-06 16:22:48,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:48,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952323584] [2021-01-06 16:22:48,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:48,881 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 16:22:48,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952323584] [2021-01-06 16:22:48,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321754179] [2021-01-06 16:22:48,883 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 16:22:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:49,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 126 conjunts are in the unsatisfiable core [2021-01-06 16:22:49,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:22:49,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:49,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:49,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 16:22:49,413 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-01-06 16:22:49,419 INFO L348 Elim1Store]: treesize reduction 39, result has 78.1 percent of original size [2021-01-06 16:22:49,419 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 16:22:49,425 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:49,563 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-01-06 16:22:49,564 INFO L625 ElimStorePlain]: treesize reduction 86, result has 47.2 percent of original size [2021-01-06 16:22:49,576 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:22:49,578 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:22:49,581 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 16:22:49,582 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:149, output treesize:54 [2021-01-06 16:22:49,584 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:22:49,646 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:22:49,703 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:01,761 WARN L197 SmtUtils]: Spent 12.01 s on a formula simplification that was a NOOP. DAG size: 39 [2021-01-06 16:23:02,068 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:02,135 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:02,195 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:02,257 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:16,638 WARN L197 SmtUtils]: Spent 14.31 s on a formula simplification that was a NOOP. DAG size: 41 [2021-01-06 16:23:17,090 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:32,132 WARN L197 SmtUtils]: Spent 14.99 s on a formula simplification that was a NOOP. DAG size: 51 [2021-01-06 16:23:32,151 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:47,734 WARN L197 SmtUtils]: Spent 15.52 s on a formula simplification that was a NOOP. DAG size: 51 [2021-01-06 16:23:47,801 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 3, 7, 1] term [2021-01-06 16:23:47,801 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-06 16:23:47,820 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:47,842 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:47,895 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 16:23:48,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:23:50,582 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= v_prenex_23 ULTIMATE.start___ldv_list_add_~new.base) [2021-01-06 16:23:53,710 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ v_prenex_28 8) v_prenex_28) [2021-01-06 16:23:53,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:23:54,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:23:54,092 INFO L244 Elim1Store]: Index analysis took 6135 ms [2021-01-06 16:24:00,225 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= v_prenex_28 (+ (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)) [2021-01-06 16:24:02,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:24:09,758 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2021-01-06 16:24:09,759 INFO L348 Elim1Store]: treesize reduction 143, result has 54.5 percent of original size [2021-01-06 16:24:09,760 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 16:24:09,762 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 16:25:54,706 WARN L197 SmtUtils]: Spent 1.75 m on a formula simplification. DAG size of input: 190 DAG size of output: 179 [2021-01-06 16:25:54,707 INFO L625 ElimStorePlain]: treesize reduction 76, result has 94.2 percent of original size [2021-01-06 16:25:57,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:25:58,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:25:59,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:25:59,149 INFO L244 Elim1Store]: Index analysis took 4384 ms [2021-01-06 16:26:07,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:26:09,982 WARN L197 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2021-01-06 16:26:09,983 INFO L348 Elim1Store]: treesize reduction 143, result has 54.5 percent of original size [2021-01-06 16:26:09,984 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 16:26:09,990 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.