/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-dcfa08f [2020-12-23 06:27:57,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:27:57,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:27:57,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:27:57,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:27:57,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:27:57,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:27:57,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:27:57,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:27:57,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:27:57,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:27:57,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:27:57,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:27:57,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:27:57,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:27:57,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:27:57,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:27:57,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:27:57,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:27:57,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:27:57,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:27:57,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:27:57,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:27:57,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:27:57,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 06:27:57,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 06:27:57,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 06:27:57,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 06:27:57,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 06:27:57,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 06:27:57,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 06:27:57,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 06:27:57,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 06:27:57,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 06:27:57,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 06:27:57,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 06:27:57,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 06:27:57,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 06:27:57,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:27:57,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:27:57,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:27:57,400 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 06:27:57,450 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:27:57,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:27:57,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:27:57,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:27:57,456 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:27:57,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:27:57,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:27:57,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:27:57,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:27:57,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:27:57,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:27:57,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:27:57,459 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:27:57,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:27:57,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:27:57,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:27:57,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:27:57,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:27:57,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:27:57,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:27:57,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:27:57,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:27:57,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:27:57,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:27:57,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:27:57,462 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:27:57,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:27:57,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:27:57,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:27:57,958 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:27:57,959 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:27:57,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex.i [2020-12-23 06:27:58,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/624998a82/ba5ce6b73bae4585bbae7e21fd7fc192/FLAGd8109f866 [2020-12-23 06:27:58,903 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:27:58,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex.i [2020-12-23 06:27:58,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/624998a82/ba5ce6b73bae4585bbae7e21fd7fc192/FLAGd8109f866 [2020-12-23 06:27:59,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/624998a82/ba5ce6b73bae4585bbae7e21fd7fc192 [2020-12-23 06:27:59,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:27:59,088 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:27:59,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:27:59,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:27:59,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:27:59,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:27:59" (1/1) ... [2020-12-23 06:27:59,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c762057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:27:59, skipping insertion in model container [2020-12-23 06:27:59,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:27:59" (1/1) ... [2020-12-23 06:27:59,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:27:59,161 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,] [2020-12-23 06:27:59,643 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] [2020-12-23 06:27:59,654 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] [2020-12-23 06:27:59,659 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] [2020-12-23 06:27:59,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:27:59,680 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~list,],base],StructAccessExpression[IdentifierExpression[~list,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~list,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~list,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~next,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~next,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new,],base],StructAccessExpression[IdentifierExpression[~new,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~new,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~prev,],base],StructAccessExpression[IdentifierExpression[~prev,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~next,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~next,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~prev,],base],StructAccessExpression[IdentifierExpression[~prev,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~le~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~le~0,],base],StructAccessExpression[IdentifierExpression[~le~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~m~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~m~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~m~1,] left hand side expression in assignment: lhs: VariableLHS[~m~1,] [2020-12-23 06:27:59,794 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] [2020-12-23 06:27:59,799 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] [2020-12-23 06:27:59,801 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] [2020-12-23 06:27:59,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:27:59,912 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:27:59,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:27:59 WrapperNode [2020-12-23 06:27:59,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:27:59,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:27:59,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:27:59,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:27:59,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:27:59" (1/1) ... [2020-12-23 06:27:59,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:27:59" (1/1) ... [2020-12-23 06:28:00,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:28:00,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:28:00,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:28:00,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:28:00,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:27:59" (1/1) ... [2020-12-23 06:28:00,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:27:59" (1/1) ... [2020-12-23 06:28:00,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:27:59" (1/1) ... [2020-12-23 06:28:00,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:27:59" (1/1) ... [2020-12-23 06:28:00,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:27:59" (1/1) ... [2020-12-23 06:28:00,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:27:59" (1/1) ... [2020-12-23 06:28:00,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:27:59" (1/1) ... [2020-12-23 06:28:00,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:28:00,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:28:00,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:28:00,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:28:00,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:27:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:28:00,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 06:28:00,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 06:28:00,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:28:00,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 06:28:00,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 06:28:00,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-23 06:28:00,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:28:00,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:28:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:28:01,114 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:28:01,115 INFO L299 CfgBuilder]: Removed 82 assume(true) statements. [2020-12-23 06:28:01,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:28:01 BoogieIcfgContainer [2020-12-23 06:28:01,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:28:01,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:28:01,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:28:01,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:28:01,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:27:59" (1/3) ... [2020-12-23 06:28:01,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a9ee31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:28:01, skipping insertion in model container [2020-12-23 06:28:01,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:27:59" (2/3) ... [2020-12-23 06:28:01,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a9ee31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:28:01, skipping insertion in model container [2020-12-23 06:28:01,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:28:01" (3/3) ... [2020-12-23 06:28:01,128 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex.i [2020-12-23 06:28:01,136 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:28:01,142 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-23 06:28:01,166 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-23 06:28:01,198 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:28:01,198 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:28:01,198 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:28:01,198 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:28:01,199 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:28:01,199 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:28:01,199 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:28:01,199 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:28:01,222 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-12-23 06:28:01,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 06:28:01,228 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:01,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:28:01,230 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:01,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:01,238 INFO L82 PathProgramCache]: Analyzing trace with hash 912087840, now seen corresponding path program 1 times [2020-12-23 06:28:01,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:01,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368550084] [2020-12-23 06:28:01,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:28:01,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368550084] [2020-12-23 06:28:01,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:28:01,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:28:01,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400273702] [2020-12-23 06:28:01,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 06:28:01,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:28:01,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 06:28:01,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:28:01,474 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 2 states. [2020-12-23 06:28:01,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:28:01,505 INFO L93 Difference]: Finished difference Result 172 states and 239 transitions. [2020-12-23 06:28:01,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 06:28:01,507 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-12-23 06:28:01,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:28:01,518 INFO L225 Difference]: With dead ends: 172 [2020-12-23 06:28:01,518 INFO L226 Difference]: Without dead ends: 84 [2020-12-23 06:28:01,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:28:01,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-23 06:28:01,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-12-23 06:28:01,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-23 06:28:01,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2020-12-23 06:28:01,573 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 14 [2020-12-23 06:28:01,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:28:01,574 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2020-12-23 06:28:01,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 06:28:01,574 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2020-12-23 06:28:01,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 06:28:01,575 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:01,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:28:01,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:28:01,576 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:01,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:01,577 INFO L82 PathProgramCache]: Analyzing trace with hash 793647061, now seen corresponding path program 1 times [2020-12-23 06:28:01,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:01,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766387379] [2020-12-23 06:28:01,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:01,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:28:01,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766387379] [2020-12-23 06:28:01,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:28:01,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:28:01,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114800437] [2020-12-23 06:28:01,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:28:01,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:28:01,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:28:01,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:28:01,731 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand 4 states. [2020-12-23 06:28:01,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:28:01,860 INFO L93 Difference]: Finished difference Result 135 states and 157 transitions. [2020-12-23 06:28:01,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:28:01,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 06:28:01,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:28:01,863 INFO L225 Difference]: With dead ends: 135 [2020-12-23 06:28:01,864 INFO L226 Difference]: Without dead ends: 131 [2020-12-23 06:28:01,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:28:01,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-23 06:28:01,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 88. [2020-12-23 06:28:01,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-23 06:28:01,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 105 transitions. [2020-12-23 06:28:01,878 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 105 transitions. Word has length 14 [2020-12-23 06:28:01,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:28:01,878 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 105 transitions. [2020-12-23 06:28:01,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:28:01,879 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 105 transitions. [2020-12-23 06:28:01,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 06:28:01,879 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:01,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:28:01,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:28:01,880 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:01,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:01,881 INFO L82 PathProgramCache]: Analyzing trace with hash 795255775, now seen corresponding path program 1 times [2020-12-23 06:28:01,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:01,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178072906] [2020-12-23 06:28:01,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:28:02,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178072906] [2020-12-23 06:28:02,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:28:02,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 06:28:02,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106673096] [2020-12-23 06:28:02,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:28:02,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:28:02,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:28:02,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:28:02,068 INFO L87 Difference]: Start difference. First operand 88 states and 105 transitions. Second operand 4 states. [2020-12-23 06:28:02,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:28:02,376 INFO L93 Difference]: Finished difference Result 219 states and 262 transitions. [2020-12-23 06:28:02,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 06:28:02,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 06:28:02,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:28:02,379 INFO L225 Difference]: With dead ends: 219 [2020-12-23 06:28:02,379 INFO L226 Difference]: Without dead ends: 140 [2020-12-23 06:28:02,380 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 [2020-12-23 06:28:02,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-23 06:28:02,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 101. [2020-12-23 06:28:02,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-23 06:28:02,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 118 transitions. [2020-12-23 06:28:02,395 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 118 transitions. Word has length 14 [2020-12-23 06:28:02,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:28:02,395 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 118 transitions. [2020-12-23 06:28:02,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:28:02,396 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 118 transitions. [2020-12-23 06:28:02,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 06:28:02,397 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:02,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:28:02,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 06:28:02,397 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:02,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:02,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1115638045, now seen corresponding path program 1 times [2020-12-23 06:28:02,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:02,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781269664] [2020-12-23 06:28:02,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:02,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:28:02,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781269664] [2020-12-23 06:28:02,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:28:02,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-23 06:28:02,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308227154] [2020-12-23 06:28:02,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 06:28:02,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:28:02,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 06:28:02,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-12-23 06:28:02,975 INFO L87 Difference]: Start difference. First operand 101 states and 118 transitions. Second operand 15 states. [2020-12-23 06:28:04,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:28:04,574 INFO L93 Difference]: Finished difference Result 224 states and 264 transitions. [2020-12-23 06:28:04,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 06:28:04,575 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2020-12-23 06:28:04,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:28:04,578 INFO L225 Difference]: With dead ends: 224 [2020-12-23 06:28:04,578 INFO L226 Difference]: Without dead ends: 173 [2020-12-23 06:28:04,579 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 [2020-12-23 06:28:04,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-12-23 06:28:04,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 106. [2020-12-23 06:28:04,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-23 06:28:04,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 125 transitions. [2020-12-23 06:28:04,596 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 125 transitions. Word has length 28 [2020-12-23 06:28:04,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:28:04,597 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 125 transitions. [2020-12-23 06:28:04,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 06:28:04,597 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 125 transitions. [2020-12-23 06:28:04,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 06:28:04,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:04,599 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:28:04,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 06:28:04,599 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:04,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:04,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1190752804, now seen corresponding path program 1 times [2020-12-23 06:28:04,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:04,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136464246] [2020-12-23 06:28:04,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:28:05,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136464246] [2020-12-23 06:28:05,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855959108] [2020-12-23 06:28:05,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:28:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:05,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 78 conjunts are in the unsatisfiable core [2020-12-23 06:28:05,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:28:05,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:05,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:05,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:06,045 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-12-23 06:28:06,046 INFO L348 Elim1Store]: treesize reduction 188, result has 55.0 percent of original size [2020-12-23 06:28:06,047 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 546 treesize of output 515 [2020-12-23 06:28:06,057 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:28:06,318 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-12-23 06:28:06,319 INFO L625 ElimStorePlain]: treesize reduction 142, result has 72.3 percent of original size [2020-12-23 06:28:06,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:06,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:06,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:06,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:06,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:06,566 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-12-23 06:28:06,569 INFO L348 Elim1Store]: treesize reduction 62, result has 73.5 percent of original size [2020-12-23 06:28:06,570 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 222 treesize of output 214 [2020-12-23 06:28:06,595 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 06:28:06,761 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2020-12-23 06:28:06,764 INFO L625 ElimStorePlain]: treesize reduction 162, result has 46.9 percent of original size [2020-12-23 06:28:06,803 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 06:28:06,804 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:647, output treesize:154 [2020-12-23 06:28:07,073 INFO L348 Elim1Store]: treesize reduction 18, result has 81.8 percent of original size [2020-12-23 06:28:07,074 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 180 treesize of output 175 [2020-12-23 06:28:07,082 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 06:28:07,101 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:28:07,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:07,117 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:28:07,118 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 44 [2020-12-23 06:28:07,120 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 06:28:07,131 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:28:07,134 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 06:28:07,134 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:186, output treesize:15 [2020-12-23 06:28:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:28:07,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:28:07,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-12-23 06:28:07,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120065579] [2020-12-23 06:28:07,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 06:28:07,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:28:07,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 06:28:07,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-12-23 06:28:07,183 INFO L87 Difference]: Start difference. First operand 106 states and 125 transitions. Second operand 14 states. [2020-12-23 06:28:07,499 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-23 06:28:07,653 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-12-23 06:28:08,108 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-12-23 06:28:09,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:28:09,344 INFO L93 Difference]: Finished difference Result 292 states and 343 transitions. [2020-12-23 06:28:09,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 06:28:09,345 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-12-23 06:28:09,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:28:09,347 INFO L225 Difference]: With dead ends: 292 [2020-12-23 06:28:09,347 INFO L226 Difference]: Without dead ends: 232 [2020-12-23 06:28:09,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2020-12-23 06:28:09,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-12-23 06:28:09,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 122. [2020-12-23 06:28:09,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-23 06:28:09,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 141 transitions. [2020-12-23 06:28:09,372 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 141 transitions. Word has length 31 [2020-12-23 06:28:09,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:28:09,373 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 141 transitions. [2020-12-23 06:28:09,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 06:28:09,378 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 141 transitions. [2020-12-23 06:28:09,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 06:28:09,383 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:09,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:28:09,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:28:09,598 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:09,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:09,600 INFO L82 PathProgramCache]: Analyzing trace with hash 251401029, now seen corresponding path program 1 times [2020-12-23 06:28:09,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:09,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969816441] [2020-12-23 06:28:09,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:28:09,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969816441] [2020-12-23 06:28:09,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:28:09,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:28:09,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938487872] [2020-12-23 06:28:09,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:28:09,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:28:09,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:28:09,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:28:09,699 INFO L87 Difference]: Start difference. First operand 122 states and 141 transitions. Second operand 4 states. [2020-12-23 06:28:09,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:28:09,783 INFO L93 Difference]: Finished difference Result 201 states and 232 transitions. [2020-12-23 06:28:09,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:28:09,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-12-23 06:28:09,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:28:09,785 INFO L225 Difference]: With dead ends: 201 [2020-12-23 06:28:09,785 INFO L226 Difference]: Without dead ends: 129 [2020-12-23 06:28:09,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:28:09,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-12-23 06:28:09,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 97. [2020-12-23 06:28:09,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-23 06:28:09,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2020-12-23 06:28:09,815 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 34 [2020-12-23 06:28:09,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:28:09,815 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2020-12-23 06:28:09,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:28:09,816 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2020-12-23 06:28:09,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 06:28:09,826 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:09,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:28:09,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 06:28:09,827 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:09,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:09,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1130333060, now seen corresponding path program 1 times [2020-12-23 06:28:09,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:09,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469514423] [2020-12-23 06:28:09,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 06:28:10,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469514423] [2020-12-23 06:28:10,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053510111] [2020-12-23 06:28:10,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:28:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:10,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 170 conjunts are in the unsatisfiable core [2020-12-23 06:28:10,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:28:10,874 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-23 06:28:10,875 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:28:10,881 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:28:10,882 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 06:28:10,882 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-12-23 06:28:10,985 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:28:10,986 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-23 06:28:10,988 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:28:10,994 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:28:11,000 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:28:11,001 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 06:28:11,001 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2020-12-23 06:28:11,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:11,528 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-12-23 06:28:11,530 INFO L348 Elim1Store]: treesize reduction 36, result has 77.5 percent of original size [2020-12-23 06:28:11,531 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 137 treesize of output 145 [2020-12-23 06:28:11,538 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:28:11,755 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-12-23 06:28:11,756 INFO L625 ElimStorePlain]: treesize reduction 74, result has 74.1 percent of original size [2020-12-23 06:28:11,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:11,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:11,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:11,912 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2020-12-23 06:28:11,914 INFO L348 Elim1Store]: treesize reduction 103, result has 35.6 percent of original size [2020-12-23 06:28:11,915 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 137 treesize of output 78 [2020-12-23 06:28:11,917 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 06:28:12,068 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-12-23 06:28:12,069 INFO L625 ElimStorePlain]: treesize reduction 18, result has 87.8 percent of original size [2020-12-23 06:28:12,081 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:28:12,083 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 06:28:12,084 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:287, output treesize:221 [2020-12-23 06:28:12,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 06:28:12,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:28:12,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 33 [2020-12-23 06:28:12,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359393551] [2020-12-23 06:28:12,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-23 06:28:12,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:28:12,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-23 06:28:12,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1039, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 06:28:13,000 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand 34 states. [2020-12-23 06:28:14,069 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-12-23 06:28:14,634 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-12-23 06:28:15,020 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2020-12-23 06:28:15,424 WARN L197 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2020-12-23 06:28:15,807 WARN L197 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2020-12-23 06:28:16,139 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2020-12-23 06:28:16,461 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2020-12-23 06:28:16,733 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2020-12-23 06:28:17,033 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2020-12-23 06:28:17,317 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-12-23 06:28:17,601 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2020-12-23 06:28:18,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:28:18,783 INFO L93 Difference]: Finished difference Result 163 states and 188 transitions. [2020-12-23 06:28:18,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 06:28:18,783 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 44 [2020-12-23 06:28:18,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:28:18,788 INFO L225 Difference]: With dead ends: 163 [2020-12-23 06:28:18,788 INFO L226 Difference]: Without dead ends: 104 [2020-12-23 06:28:18,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=364, Invalid=2498, Unknown=0, NotChecked=0, Total=2862 [2020-12-23 06:28:18,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-23 06:28:18,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 78. [2020-12-23 06:28:18,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-23 06:28:18,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2020-12-23 06:28:18,807 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 44 [2020-12-23 06:28:18,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:28:18,808 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2020-12-23 06:28:18,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-23 06:28:18,808 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2020-12-23 06:28:18,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-23 06:28:18,808 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:18,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:28:19,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:28:19,029 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:19,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:19,031 INFO L82 PathProgramCache]: Analyzing trace with hash 786851695, now seen corresponding path program 1 times [2020-12-23 06:28:19,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:19,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911972201] [2020-12-23 06:28:19,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 06:28:19,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911972201] [2020-12-23 06:28:19,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:28:19,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 06:28:19,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334467147] [2020-12-23 06:28:19,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 06:28:19,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:28:19,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 06:28:19,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 06:28:19,221 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 8 states. [2020-12-23 06:28:19,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:28:19,651 INFO L93 Difference]: Finished difference Result 178 states and 205 transitions. [2020-12-23 06:28:19,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 06:28:19,652 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-12-23 06:28:19,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:28:19,653 INFO L225 Difference]: With dead ends: 178 [2020-12-23 06:28:19,654 INFO L226 Difference]: Without dead ends: 146 [2020-12-23 06:28:19,654 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 [2020-12-23 06:28:19,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-12-23 06:28:19,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 84. [2020-12-23 06:28:19,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-23 06:28:19,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2020-12-23 06:28:19,668 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 48 [2020-12-23 06:28:19,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:28:19,669 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2020-12-23 06:28:19,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 06:28:19,669 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2020-12-23 06:28:19,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-23 06:28:19,670 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:19,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:28:19,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 06:28:19,670 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:19,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:19,671 INFO L82 PathProgramCache]: Analyzing trace with hash 788460409, now seen corresponding path program 1 times [2020-12-23 06:28:19,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:19,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798381137] [2020-12-23 06:28:19,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 06:28:19,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798381137] [2020-12-23 06:28:19,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:28:19,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:28:19,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268528734] [2020-12-23 06:28:19,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:28:19,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:28:19,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:28:19,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:28:19,744 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand 4 states. [2020-12-23 06:28:19,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:28:19,809 INFO L93 Difference]: Finished difference Result 115 states and 129 transitions. [2020-12-23 06:28:19,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:28:19,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-12-23 06:28:19,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:28:19,811 INFO L225 Difference]: With dead ends: 115 [2020-12-23 06:28:19,811 INFO L226 Difference]: Without dead ends: 111 [2020-12-23 06:28:19,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:28:19,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-12-23 06:28:19,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 88. [2020-12-23 06:28:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-23 06:28:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2020-12-23 06:28:19,823 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 48 [2020-12-23 06:28:19,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:28:19,823 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2020-12-23 06:28:19,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:28:19,824 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2020-12-23 06:28:19,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 06:28:19,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:28:19,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:28:19,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 06:28:19,825 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:28:19,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:28:19,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1434516829, now seen corresponding path program 1 times [2020-12-23 06:28:19,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:28:19,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206276055] [2020-12-23 06:28:19,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:28:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:20,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 06:28:20,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206276055] [2020-12-23 06:28:20,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202606596] [2020-12-23 06:28:20,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:28:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:28:20,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 126 conjunts are in the unsatisfiable core [2020-12-23 06:28:20,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:28:20,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:20,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:28:20,647 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 06:28:20,845 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-23 06:28:20,846 INFO L348 Elim1Store]: treesize reduction 39, result has 78.1 percent of original size [2020-12-23 06:28:20,847 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 137 treesize of output 160 [2020-12-23 06:28:20,850 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:28:20,985 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-23 06:28:20,987 INFO L625 ElimStorePlain]: treesize reduction 86, result has 47.2 percent of original size [2020-12-23 06:28:20,993 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:28:20,996 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:28:20,999 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 06:28:20,999 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:149, output treesize:54 [2020-12-23 06:28:21,002 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:28:21,073 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:28:21,138 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:28:33,343 WARN L197 SmtUtils]: Spent 12.15 s on a formula simplification that was a NOOP. DAG size: 39 [2020-12-23 06:28:33,617 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:28:33,680 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:28:33,740 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:28:33,798 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:28:48,526 WARN L197 SmtUtils]: Spent 14.65 s on a formula simplification that was a NOOP. DAG size: 41 [2020-12-23 06:28:49,055 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:29:04,776 WARN L197 SmtUtils]: Spent 15.66 s on a formula simplification that was a NOOP. DAG size: 51 [2020-12-23 06:29:04,817 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:29:20,742 WARN L197 SmtUtils]: Spent 15.85 s on a formula simplification that was a NOOP. DAG size: 51 [2020-12-23 06:29:20,790 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 3, 7, 1] term [2020-12-23 06:29:20,790 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 06:29:20,806 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:29:20,837 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 06:29:20,899 INFO L443 ElimStorePlain]: Different costs {0=[v_prenex_25, v_prenex_32, |v_#memory_$Pointer$.base_47|], 51=[v_prenex_33, |v_#memory_$Pointer$.offset_48|], 69=[v_prenex_26]} [2020-12-23 06:29:24,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:29:25,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:29:25,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:29:25,424 INFO L244 Elim1Store]: Index analysis took 4254 ms [2020-12-23 06:29:33,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:29:35,836 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) [2020-12-23 06:29:43,243 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-12-23 06:29:43,244 INFO L348 Elim1Store]: treesize reduction 143, result has 54.5 percent of original size [2020-12-23 06:29:43,245 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 189 treesize of output 194 [2020-12-23 06:29:43,251 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:31:36,817 WARN L197 SmtUtils]: Spent 1.89 m on a formula simplification. DAG size of input: 190 DAG size of output: 179 [2020-12-23 06:31:36,818 INFO L625 ElimStorePlain]: treesize reduction 76, result has 94.2 percent of original size [2020-12-23 06:31:37,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:31:40,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:31:40,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:31:40,989 INFO L244 Elim1Store]: Index analysis took 4096 ms [2020-12-23 06:31:48,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:31:50,772 WARN L197 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-12-23 06:31:50,774 INFO L348 Elim1Store]: treesize reduction 143, result has 54.5 percent of original size [2020-12-23 06:31:50,775 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 189 treesize of output 194 [2020-12-23 06:31:50,783 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.