/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_unlock_at_exit.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:22:38,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:22:38,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:22:38,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:22:38,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:22:38,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:22:38,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:22:38,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:22:38,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:22:38,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:22:38,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:22:38,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:22:38,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:22:38,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:22:38,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:22:38,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:22:38,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:22:38,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:22:38,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:22:38,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:22:38,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:22:38,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:22:38,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:22:38,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:22:38,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:22:38,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:22:38,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:22:38,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:22:38,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:22:38,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:22:38,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:22:38,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:22:38,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:22:38,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:22:38,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:22:38,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:22:38,583 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 16:22:38,611 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:22:38,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:22:38,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:22:38,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:22:38,614 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:22:38,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:22:38,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:22:38,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:22:38,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:22:38,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:22:38,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:22:38,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:22:38,616 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:22:38,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:22:38,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:22:38,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:22:38,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:22:38,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:22:38,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:22:38,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:22:38,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:22:38,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:22:38,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:22:38,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:22:38,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:22:38,620 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:22:39,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:22:39,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:22:39,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:22:39,123 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:22:39,123 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:22:39,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i [2021-01-06 16:22:39,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2ba935408/e31d7e16fd1943839ef3ee9913ba0c8b/FLAGc6df0669d [2021-01-06 16:22:39,994 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:22:39,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i [2021-01-06 16:22:40,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2ba935408/e31d7e16fd1943839ef3ee9913ba0c8b/FLAGc6df0669d [2021-01-06 16:22:40,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2ba935408/e31d7e16fd1943839ef3ee9913ba0c8b [2021-01-06 16:22:40,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:22:40,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:22:40,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:22:40,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:22:40,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:22:40,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:22:40" (1/1) ... [2021-01-06 16:22:40,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26098526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:40, skipping insertion in model container [2021-01-06 16:22:40,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:22:40" (1/1) ... [2021-01-06 16:22:40,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:22:40,333 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 16:22:40,773 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_unlock_at_exit.i[25842,25855] [2021-01-06 16:22:40,787 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_unlock_at_exit.i[25967,25980] [2021-01-06 16:22:40,793 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_unlock_at_exit.i[26082,26095] [2021-01-06 16:22:40,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:22:40,817 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 16:22:40,934 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_unlock_at_exit.i[25842,25855] [2021-01-06 16:22:40,935 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_unlock_at_exit.i[25967,25980] [2021-01-06 16:22:40,937 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_unlock_at_exit.i[26082,26095] [2021-01-06 16:22:40,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:22:41,129 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:22:41,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:41 WrapperNode [2021-01-06 16:22:41,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:22:41,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:22:41,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:22:41,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:22:41,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:41" (1/1) ... [2021-01-06 16:22:41,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:41" (1/1) ... [2021-01-06 16:22:41,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:22:41,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:22:41,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:22:41,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:22:41,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:41" (1/1) ... [2021-01-06 16:22:41,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:41" (1/1) ... [2021-01-06 16:22:41,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:41" (1/1) ... [2021-01-06 16:22:41,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:41" (1/1) ... [2021-01-06 16:22:41,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:41" (1/1) ... [2021-01-06 16:22:41,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:41" (1/1) ... [2021-01-06 16:22:41,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:41" (1/1) ... [2021-01-06 16:22:41,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:22:41,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:22:41,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:22:41,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:22:41,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:41" (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 16:22:41,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-06 16:22:41,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-01-06 16:22:41,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:22:41,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-01-06 16:22:41,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:22:41,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-01-06 16:22:41,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:22:41,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:22:41,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:22:42,469 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:22:42,470 INFO L299 CfgBuilder]: Removed 70 assume(true) statements. [2021-01-06 16:22:42,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:22:42 BoogieIcfgContainer [2021-01-06 16:22:42,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:22:42,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:22:42,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:22:42,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:22:42,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:22:40" (1/3) ... [2021-01-06 16:22:42,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6d9a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:22:42, skipping insertion in model container [2021-01-06 16:22:42,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:41" (2/3) ... [2021-01-06 16:22:42,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6d9a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:22:42, skipping insertion in model container [2021-01-06 16:22:42,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:22:42" (3/3) ... [2021-01-06 16:22:42,484 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_unlock_at_exit.i [2021-01-06 16:22:42,493 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:22:42,499 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-01-06 16:22:42,522 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-06 16:22:42,551 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:22:42,551 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:22:42,551 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:22:42,552 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:22:42,552 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:22:42,552 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:22:42,552 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:22:42,552 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:22:42,572 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2021-01-06 16:22:42,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 16:22:42,579 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:42,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:22:42,580 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:22:42,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:42,593 INFO L82 PathProgramCache]: Analyzing trace with hash 912087840, now seen corresponding path program 1 times [2021-01-06 16:22:42,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:42,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955940114] [2021-01-06 16:22:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:42,798 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 16:22:42,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955940114] [2021-01-06 16:22:42,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:42,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:22:42,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732961889] [2021-01-06 16:22:42,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:22:42,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:42,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:22:42,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:22:42,825 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2021-01-06 16:22:42,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:42,853 INFO L93 Difference]: Finished difference Result 142 states and 195 transitions. [2021-01-06 16:22:42,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:22:42,855 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2021-01-06 16:22:42,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:42,866 INFO L225 Difference]: With dead ends: 142 [2021-01-06 16:22:42,866 INFO L226 Difference]: Without dead ends: 69 [2021-01-06 16:22:42,870 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 16:22:42,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-01-06 16:22:42,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-01-06 16:22:42,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-01-06 16:22:42,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2021-01-06 16:22:42,916 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 14 [2021-01-06 16:22:42,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:42,917 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2021-01-06 16:22:42,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:22:42,917 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2021-01-06 16:22:42,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 16:22:42,918 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:42,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:22:42,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:22:42,919 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:22:42,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:42,920 INFO L82 PathProgramCache]: Analyzing trace with hash 793647061, now seen corresponding path program 1 times [2021-01-06 16:22:42,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:42,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272630731] [2021-01-06 16:22:42,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:43,055 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 16:22:43,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272630731] [2021-01-06 16:22:43,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:43,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:22:43,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692491542] [2021-01-06 16:22:43,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:22:43,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:43,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:22:43,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:22:43,063 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand 4 states. [2021-01-06 16:22:43,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:43,228 INFO L93 Difference]: Finished difference Result 109 states and 125 transitions. [2021-01-06 16:22:43,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:22:43,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-06 16:22:43,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:43,234 INFO L225 Difference]: With dead ends: 109 [2021-01-06 16:22:43,234 INFO L226 Difference]: Without dead ends: 105 [2021-01-06 16:22:43,236 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 16:22:43,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-01-06 16:22:43,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 73. [2021-01-06 16:22:43,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-01-06 16:22:43,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 86 transitions. [2021-01-06 16:22:43,261 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 86 transitions. Word has length 14 [2021-01-06 16:22:43,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:43,263 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 86 transitions. [2021-01-06 16:22:43,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:22:43,264 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 86 transitions. [2021-01-06 16:22:43,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 16:22:43,265 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:43,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:22:43,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:22:43,266 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:22:43,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:43,269 INFO L82 PathProgramCache]: Analyzing trace with hash 795255775, now seen corresponding path program 1 times [2021-01-06 16:22:43,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:43,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346093335] [2021-01-06 16:22:43,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:43,434 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 16:22:43,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346093335] [2021-01-06 16:22:43,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:43,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:22:43,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494209442] [2021-01-06 16:22:43,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:22:43,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:43,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:22:43,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:22:43,438 INFO L87 Difference]: Start difference. First operand 73 states and 86 transitions. Second operand 4 states. [2021-01-06 16:22:43,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:43,726 INFO L93 Difference]: Finished difference Result 172 states and 202 transitions. [2021-01-06 16:22:43,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 16:22:43,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-06 16:22:43,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:43,729 INFO L225 Difference]: With dead ends: 172 [2021-01-06 16:22:43,729 INFO L226 Difference]: Without dead ends: 108 [2021-01-06 16:22:43,730 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 16:22:43,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-01-06 16:22:43,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 77. [2021-01-06 16:22:43,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-01-06 16:22:43,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2021-01-06 16:22:43,742 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 14 [2021-01-06 16:22:43,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:43,742 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2021-01-06 16:22:43,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:22:43,743 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2021-01-06 16:22:43,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 16:22:43,744 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:43,744 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 16:22:43,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 16:22:43,745 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:22:43,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:43,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1115638045, now seen corresponding path program 1 times [2021-01-06 16:22:43,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:43,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798675179] [2021-01-06 16:22:43,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:44,386 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 16:22:44,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798675179] [2021-01-06 16:22:44,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:44,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-01-06 16:22:44,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988545075] [2021-01-06 16:22:44,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 16:22:44,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:44,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 16:22:44,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-01-06 16:22:44,393 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 15 states. [2021-01-06 16:22:45,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:45,774 INFO L93 Difference]: Finished difference Result 157 states and 179 transitions. [2021-01-06 16:22:45,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 16:22:45,775 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2021-01-06 16:22:45,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:45,776 INFO L225 Difference]: With dead ends: 157 [2021-01-06 16:22:45,777 INFO L226 Difference]: Without dead ends: 121 [2021-01-06 16:22:45,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2021-01-06 16:22:45,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-01-06 16:22:45,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 79. [2021-01-06 16:22:45,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-01-06 16:22:45,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2021-01-06 16:22:45,791 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 28 [2021-01-06 16:22:45,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:45,792 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2021-01-06 16:22:45,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 16:22:45,792 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2021-01-06 16:22:45,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 16:22:45,793 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:45,794 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 16:22:45,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 16:22:45,794 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:22:45,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:45,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1190752804, now seen corresponding path program 1 times [2021-01-06 16:22:45,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:45,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656863732] [2021-01-06 16:22:45,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:46,239 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 16:22:46,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656863732] [2021-01-06 16:22:46,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601296619] [2021-01-06 16:22:46,240 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 16:22:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:46,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 120 conjunts are in the unsatisfiable core [2021-01-06 16:22:46,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:22:47,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:47,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:47,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:47,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:47,371 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-01-06 16:22:47,373 INFO L348 Elim1Store]: treesize reduction 66, result has 78.7 percent of original size [2021-01-06 16:22:47,375 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 538 treesize of output 530 [2021-01-06 16:22:47,398 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:47,539 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2021-01-06 16:22:47,540 INFO L625 ElimStorePlain]: treesize reduction 177, result has 66.3 percent of original size [2021-01-06 16:22:47,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:47,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:47,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:47,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:47,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:47,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 16:22:47,580 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:47,581 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 83 [2021-01-06 16:22:47,586 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:47,688 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-01-06 16:22:47,690 INFO L625 ElimStorePlain]: treesize reduction 38, result has 73.4 percent of original size [2021-01-06 16:22:47,694 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 16:22:47,694 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:639, output treesize:121 [2021-01-06 16:22:47,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:47,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:47,895 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:47,896 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 140 treesize of output 128 [2021-01-06 16:22:47,904 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-06 16:22:47,914 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 16:22:47,936 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:47,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:47,958 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:47,959 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 50 [2021-01-06 16:22:47,963 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:47,973 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:47,976 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 16:22:47,976 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:153, output treesize:15 [2021-01-06 16:22:48,021 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 16:22:48,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:22:48,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 16 [2021-01-06 16:22:48,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387531225] [2021-01-06 16:22:48,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 16:22:48,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:48,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 16:22:48,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-01-06 16:22:48,024 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand 17 states. [2021-01-06 16:22:48,986 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2021-01-06 16:22:50,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:50,027 INFO L93 Difference]: Finished difference Result 237 states and 269 transitions. [2021-01-06 16:22:50,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 16:22:50,028 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 31 [2021-01-06 16:22:50,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:50,034 INFO L225 Difference]: With dead ends: 237 [2021-01-06 16:22:50,037 INFO L226 Difference]: Without dead ends: 195 [2021-01-06 16:22:50,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2021-01-06 16:22:50,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-01-06 16:22:50,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 83. [2021-01-06 16:22:50,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-01-06 16:22:50,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2021-01-06 16:22:50,075 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 31 [2021-01-06 16:22:50,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:50,084 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2021-01-06 16:22:50,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 16:22:50,084 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2021-01-06 16:22:50,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 16:22:50,085 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:50,086 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 16:22:50,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:22:50,302 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:22:50,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:50,304 INFO L82 PathProgramCache]: Analyzing trace with hash 251401029, now seen corresponding path program 1 times [2021-01-06 16:22:50,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:50,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424198818] [2021-01-06 16:22:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:50,395 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 16:22:50,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424198818] [2021-01-06 16:22:50,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:50,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:22:50,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268149332] [2021-01-06 16:22:50,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:22:50,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:50,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:22:50,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:22:50,400 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 4 states. [2021-01-06 16:22:50,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:50,474 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2021-01-06 16:22:50,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:22:50,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2021-01-06 16:22:50,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:50,476 INFO L225 Difference]: With dead ends: 128 [2021-01-06 16:22:50,476 INFO L226 Difference]: Without dead ends: 91 [2021-01-06 16:22:50,479 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 16:22:50,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-01-06 16:22:50,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 70. [2021-01-06 16:22:50,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-01-06 16:22:50,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2021-01-06 16:22:50,505 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 34 [2021-01-06 16:22:50,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:50,506 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2021-01-06 16:22:50,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:22:50,506 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2021-01-06 16:22:50,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 16:22:50,513 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:50,513 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 16:22:50,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 16:22:50,514 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:22:50,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:50,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1769595066, now seen corresponding path program 1 times [2021-01-06 16:22:50,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:50,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776235624] [2021-01-06 16:22:50,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:50,609 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 16:22:50,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776235624] [2021-01-06 16:22:50,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:50,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:22:50,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828672120] [2021-01-06 16:22:50,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:22:50,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:50,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:22:50,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:22:50,614 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 4 states. [2021-01-06 16:22:50,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:50,672 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2021-01-06 16:22:50,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:22:50,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2021-01-06 16:22:50,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:50,676 INFO L225 Difference]: With dead ends: 91 [2021-01-06 16:22:50,676 INFO L226 Difference]: Without dead ends: 89 [2021-01-06 16:22:50,677 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 16:22:50,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-01-06 16:22:50,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2021-01-06 16:22:50,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-01-06 16:22:50,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2021-01-06 16:22:50,695 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 41 [2021-01-06 16:22:50,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:50,696 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2021-01-06 16:22:50,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:22:50,696 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2021-01-06 16:22:50,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 16:22:50,699 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:50,699 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 16:22:50,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 16:22:50,699 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:22:50,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:50,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1130333060, now seen corresponding path program 1 times [2021-01-06 16:22:50,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:50,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259860507] [2021-01-06 16:22:50,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:51,480 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 16:22:51,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259860507] [2021-01-06 16:22:51,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681816462] [2021-01-06 16:22:51,484 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 16:22:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:51,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 168 conjunts are in the unsatisfiable core [2021-01-06 16:22:51,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:22:51,738 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 16:22:51,739 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:51,745 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:51,746 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 16:22:51,746 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-06 16:22:51,827 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:51,827 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 16:22:51,830 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:22:51,833 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:51,840 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 16:22:51,840 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 16:22:51,841 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2021-01-06 16:22:52,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:52,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:52,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:52,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:52,414 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2021-01-06 16:22:52,415 INFO L348 Elim1Store]: treesize reduction 42, result has 75.9 percent of original size [2021-01-06 16:22:52,416 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 157 treesize of output 155 [2021-01-06 16:22:52,423 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:52,664 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2021-01-06 16:22:52,665 INFO L625 ElimStorePlain]: treesize reduction 76, result has 75.8 percent of original size [2021-01-06 16:22:52,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:52,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:52,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:52,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:22:52,811 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 30 [2021-01-06 16:22:52,812 INFO L348 Elim1Store]: treesize reduction 109, result has 37.4 percent of original size [2021-01-06 16:22:52,812 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 157 treesize of output 88 [2021-01-06 16:22:52,816 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 16:22:52,949 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2021-01-06 16:22:52,950 INFO L625 ElimStorePlain]: treesize reduction 18, result has 88.6 percent of original size [2021-01-06 16:22:52,955 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:22:52,958 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 16:22:52,958 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:327, output treesize:302 [2021-01-06 16:22:53,879 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 16:22:53,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:22:53,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 33 [2021-01-06 16:22:53,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542330556] [2021-01-06 16:22:53,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-01-06 16:22:53,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:53,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-01-06 16:22:53,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1041, Unknown=0, NotChecked=0, Total=1122 [2021-01-06 16:22:53,882 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand 34 states. [2021-01-06 16:22:54,953 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-01-06 16:22:55,441 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-01-06 16:22:55,881 WARN L197 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2021-01-06 16:22:56,298 WARN L197 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2021-01-06 16:22:56,663 WARN L197 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 97 [2021-01-06 16:22:57,006 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2021-01-06 16:22:57,326 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2021-01-06 16:22:57,620 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2021-01-06 16:22:57,912 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2021-01-06 16:22:58,195 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2021-01-06 16:22:58,457 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2021-01-06 16:22:59,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:22:59,337 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2021-01-06 16:22:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 16:22:59,337 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 44 [2021-01-06 16:22:59,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:22:59,338 INFO L225 Difference]: With dead ends: 110 [2021-01-06 16:22:59,338 INFO L226 Difference]: Without dead ends: 76 [2021-01-06 16:22:59,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=362, Invalid=2500, Unknown=0, NotChecked=0, Total=2862 [2021-01-06 16:22:59,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-01-06 16:22:59,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2021-01-06 16:22:59,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-06 16:22:59,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2021-01-06 16:22:59,351 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 44 [2021-01-06 16:22:59,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:22:59,351 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2021-01-06 16:22:59,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2021-01-06 16:22:59,352 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2021-01-06 16:22:59,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-06 16:22:59,352 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:22:59,353 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 16:22:59,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:22:59,569 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:22:59,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:22:59,570 INFO L82 PathProgramCache]: Analyzing trace with hash 786851695, now seen corresponding path program 1 times [2021-01-06 16:22:59,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:22:59,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572501519] [2021-01-06 16:22:59,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:22:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:22:59,775 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 16:22:59,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572501519] [2021-01-06 16:22:59,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:22:59,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 16:22:59,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765140011] [2021-01-06 16:22:59,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 16:22:59,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:22:59,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 16:22:59,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-01-06 16:22:59,778 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 8 states. [2021-01-06 16:23:00,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:23:00,237 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2021-01-06 16:23:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 16:23:00,238 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2021-01-06 16:23:00,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:23:00,241 INFO L225 Difference]: With dead ends: 117 [2021-01-06 16:23:00,241 INFO L226 Difference]: Without dead ends: 100 [2021-01-06 16:23:00,242 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 16:23:00,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-01-06 16:23:00,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 66. [2021-01-06 16:23:00,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-06 16:23:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-01-06 16:23:00,254 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 48 [2021-01-06 16:23:00,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:23:00,255 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-01-06 16:23:00,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 16:23:00,255 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-01-06 16:23:00,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 16:23:00,255 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:23:00,256 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 16:23:00,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 16:23:00,256 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:23:00,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:23:00,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1434516829, now seen corresponding path program 1 times [2021-01-06 16:23:00,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:23:00,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903039656] [2021-01-06 16:23:00,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:23:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:23:00,705 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 16:23:00,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903039656] [2021-01-06 16:23:00,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316648987] [2021-01-06 16:23:00,706 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 16:23:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:23:00,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 128 conjunts are in the unsatisfiable core [2021-01-06 16:23:00,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:23:01,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:23:01,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 16:23:01,498 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2021-01-06 16:23:01,500 INFO L348 Elim1Store]: treesize reduction 42, result has 83.7 percent of original size [2021-01-06 16:23:01,500 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 145 treesize of output 240 [2021-01-06 16:23:01,513 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 16:23:01,696 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2021-01-06 16:23:01,697 INFO L625 ElimStorePlain]: treesize reduction 140, result has 41.7 percent of original size [2021-01-06 16:23:01,709 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:01,713 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:01,716 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-06 16:23:01,716 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:156, output treesize:54 [2021-01-06 16:23:01,718 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:01,788 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:01,851 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:13,993 WARN L197 SmtUtils]: Spent 12.08 s on a formula simplification that was a NOOP. DAG size: 39 [2021-01-06 16:23:14,260 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:14,318 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:14,380 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:14,442 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:28,560 WARN L197 SmtUtils]: Spent 14.05 s on a formula simplification that was a NOOP. DAG size: 41 [2021-01-06 16:23:29,048 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:43,927 WARN L197 SmtUtils]: Spent 14.82 s on a formula simplification that was a NOOP. DAG size: 51 [2021-01-06 16:23:43,949 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:59,747 WARN L197 SmtUtils]: Spent 15.73 s on a formula simplification that was a NOOP. DAG size: 51 [2021-01-06 16:23:59,809 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 3, 7, 1] term [2021-01-06 16:23:59,810 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-06 16:23:59,839 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:59,870 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 16:23:59,939 INFO L443 ElimStorePlain]: Different costs {0=[v_prenex_25, v_prenex_32, |v_#memory_$Pointer$.base_38|], 51=[v_prenex_27, v_prenex_34], 69=[|v_#memory_$Pointer$.offset_39|]} [2021-01-06 16:24:02,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:24:03,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:24:03,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:24:03,866 INFO L244 Elim1Store]: Index analysis took 3784 ms [2021-01-06 16:24:06,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:24:14,532 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2021-01-06 16:24:14,533 INFO L348 Elim1Store]: treesize reduction 143, result has 54.5 percent of original size [2021-01-06 16:24:14,533 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 16:24:14,536 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 16:25:52,536 WARN L197 SmtUtils]: Spent 1.63 m on a formula simplification. DAG size of input: 190 DAG size of output: 179 [2021-01-06 16:25:52,537 INFO L625 ElimStorePlain]: treesize reduction 76, result has 94.2 percent of original size [2021-01-06 16:25:56,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:25:58,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:25:58,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:25:58,992 INFO L244 Elim1Store]: Index analysis took 5467 ms [2021-01-06 16:26:05,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 16:26:10,618 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2021-01-06 16:26:10,619 INFO L348 Elim1Store]: treesize reduction 143, result has 54.5 percent of original size [2021-01-06 16:26:10,620 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 16:26:10,623 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.