/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-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/memsafety/test-0219.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:11:13,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:11:13,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:11:13,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:11:13,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:11:13,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:11:13,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:11:13,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:11:13,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:11:13,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:11:13,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:11:13,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:11:13,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:11:13,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:11:13,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:11:13,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:11:13,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:11:13,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:11:13,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:11:13,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:11:13,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:11:13,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:11:13,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:11:13,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:11:13,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-07 05:11:13,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-07 05:11:13,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-07 05:11:13,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-07 05:11:13,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-07 05:11:13,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-07 05:11:13,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:11:13,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:11:13,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:11:13,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:11:13,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:11:13,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:11:13,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:11:13,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:11:13,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:11:13,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:11:13,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:11:13,344 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:11:13,397 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:11:13,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:11:13,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:11:13,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:11:13,402 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:11:13,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:11:13,402 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:11:13,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:11:13,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:11:13,403 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:11:13,404 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:11:13,405 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:11:13,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:11:13,405 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:11:13,406 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:11:13,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:11:13,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:11:13,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:11:13,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:11:13,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:11:13,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:11:13,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:11:13,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:11:13,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:11:13,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:11:13,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:11:13,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:11:13,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:11:13,857 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:11:13,858 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:11:13,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0219.i [2021-01-07 05:11:13,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/222faf990/6eff010b4c644a558f172edf98c7df9b/FLAGb95637021 [2021-01-07 05:11:14,785 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:11:14,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/memsafety/test-0219.i [2021-01-07 05:11:14,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/222faf990/6eff010b4c644a558f172edf98c7df9b/FLAGb95637021 [2021-01-07 05:11:15,000 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/222faf990/6eff010b4c644a558f172edf98c7df9b [2021-01-07 05:11:15,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:11:15,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:11:15,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:11:15,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:11:15,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:11:15,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:11:15" (1/1) ... [2021-01-07 05:11:15,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b4b13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:11:15, skipping insertion in model container [2021-01-07 05:11:15,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:11:15" (1/1) ... [2021-01-07 05:11:15,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:11:15,065 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~item~0,],base],StructAccessExpression[IdentifierExpression[~item~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~item~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~item~0,],offset]]]] left hand side expression in assignment: address: IdentifierExpression[~list,] left hand side expression in assignment: lhs: VariableLHS[~list,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~item~1,],base],StructAccessExpression[IdentifierExpression[~item~1,],offset]]] left hand side expression in assignment: address: IdentifierExpression[~list,] left hand side expression in assignment: lhs: VariableLHS[~list~0,GLOBAL] [2021-01-07 05:11:15,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:11:15,448 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~item~0,],base],StructAccessExpression[IdentifierExpression[~item~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~item~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~item~0,],offset]]]] left hand side expression in assignment: address: IdentifierExpression[~list,] left hand side expression in assignment: lhs: VariableLHS[~list,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~item~1,],base],StructAccessExpression[IdentifierExpression[~item~1,],offset]]] left hand side expression in assignment: address: IdentifierExpression[~list,] left hand side expression in assignment: address: IdentifierExpression[~#list~0,GLOBAL] [2021-01-07 05:11:15,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:11:15,684 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:11:15,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:11:15 WrapperNode [2021-01-07 05:11:15,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:11:15,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:11:15,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:11:15,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:11:15,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:11:15" (1/1) ... [2021-01-07 05:11:15,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:11:15" (1/1) ... [2021-01-07 05:11:15,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:11:15,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:11:15,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:11:15,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:11:15,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:11:15" (1/1) ... [2021-01-07 05:11:15,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:11:15" (1/1) ... [2021-01-07 05:11:15,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:11:15" (1/1) ... [2021-01-07 05:11:15,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:11:15" (1/1) ... [2021-01-07 05:11:15,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:11:15" (1/1) ... [2021-01-07 05:11:15,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:11:15" (1/1) ... [2021-01-07 05:11:15,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:11:15" (1/1) ... [2021-01-07 05:11:15,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:11:15,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:11:15,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:11:15,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:11:15,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:11:15" (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 [2021-01-07 05:11:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-07 05:11:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-01-07 05:11:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:11:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-01-07 05:11:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:11:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-01-07 05:11:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-07 05:11:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:11:15,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:11:16,635 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:11:16,635 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-01-07 05:11:16,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:11:16 BoogieIcfgContainer [2021-01-07 05:11:16,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:11:16,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:11:16,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:11:16,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:11:16,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:11:15" (1/3) ... [2021-01-07 05:11:16,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223c3879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:11:16, skipping insertion in model container [2021-01-07 05:11:16,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:11:15" (2/3) ... [2021-01-07 05:11:16,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223c3879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:11:16, skipping insertion in model container [2021-01-07 05:11:16,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:11:16" (3/3) ... [2021-01-07 05:11:16,658 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0219.i [2021-01-07 05:11:16,667 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:11:16,676 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 48 error locations. [2021-01-07 05:11:16,706 INFO L253 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2021-01-07 05:11:16,733 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:11:16,733 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:11:16,733 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:11:16,734 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:11:16,734 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:11:16,734 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:11:16,734 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:11:16,734 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:11:16,758 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2021-01-07 05:11:16,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:11:16,768 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:11:16,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:11:16,770 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:11:16,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:11:16,778 INFO L82 PathProgramCache]: Analyzing trace with hash 925636, now seen corresponding path program 1 times [2021-01-07 05:11:16,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:11:16,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078387616] [2021-01-07 05:11:16,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:11:16,924 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 05:11:16,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [983659175] [2021-01-07 05:11:16,926 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 [2021-01-07 05:11:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:11:17,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:11:17,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:11:17,180 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 [2021-01-07 05:11:17,181 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:17,189 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:17,190 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:11:17,191 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-01-07 05:11:17,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:11:17,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078387616] [2021-01-07 05:11:17,201 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 05:11:17,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983659175] [2021-01-07 05:11:17,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:11:17,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:11:17,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148264170] [2021-01-07 05:11:17,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:11:17,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:11:17,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:11:17,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:11:17,231 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 3 states. [2021-01-07 05:11:17,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:11:17,433 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2021-01-07 05:11:17,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:11:17,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-07 05:11:17,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:11:17,448 INFO L225 Difference]: With dead ends: 133 [2021-01-07 05:11:17,448 INFO L226 Difference]: Without dead ends: 131 [2021-01-07 05:11:17,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:11:17,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-01-07 05:11:17,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 103. [2021-01-07 05:11:17,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-01-07 05:11:17,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2021-01-07 05:11:17,500 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 4 [2021-01-07 05:11:17,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:11:17,501 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2021-01-07 05:11:17,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:11:17,501 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2021-01-07 05:11:17,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-01-07 05:11:17,502 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:11:17,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-01-07 05:11:17,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-01-07 05:11:17,717 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:11:17,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:11:17,719 INFO L82 PathProgramCache]: Analyzing trace with hash 28694756, now seen corresponding path program 1 times [2021-01-07 05:11:17,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:11:17,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737408955] [2021-01-07 05:11:17,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:11:17,736 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 05:11:17,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950900203] [2021-01-07 05:11:17,736 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 [2021-01-07 05:11:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:11:17,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-07 05:11:17,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:11:17,905 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:11:18,024 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2021-01-07 05:11:18,236 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 14 treesize of output 13 [2021-01-07 05:11:18,237 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:25,713 WARN L197 SmtUtils]: Spent 7.47 s on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-01-07 05:11:25,715 INFO L625 ElimStorePlain]: treesize reduction 11, result has 91.7 percent of original size [2021-01-07 05:11:25,730 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 15 treesize of output 14 [2021-01-07 05:11:25,731 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:34,516 WARN L197 SmtUtils]: Spent 8.78 s on a formula simplification that was a NOOP. DAG size: 44 [2021-01-07 05:11:34,517 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:34,581 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2021-01-07 05:11:34,582 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:134, output treesize:121 [2021-01-07 05:11:34,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:11:34,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737408955] [2021-01-07 05:11:34,847 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 05:11:34,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950900203] [2021-01-07 05:11:34,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:11:34,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:11:34,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771799104] [2021-01-07 05:11:34,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:11:34,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:11:34,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:11:34,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:11:34,850 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 3 states. [2021-01-07 05:11:35,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:11:35,174 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2021-01-07 05:11:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:11:35,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-01-07 05:11:35,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:11:35,181 INFO L225 Difference]: With dead ends: 102 [2021-01-07 05:11:35,181 INFO L226 Difference]: Without dead ends: 102 [2021-01-07 05:11:35,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:11:35,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-01-07 05:11:35,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2021-01-07 05:11:35,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-01-07 05:11:35,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions. [2021-01-07 05:11:35,201 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 5 [2021-01-07 05:11:35,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:11:35,201 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 106 transitions. [2021-01-07 05:11:35,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:11:35,201 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 106 transitions. [2021-01-07 05:11:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-07 05:11:35,203 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:11:35,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:11:35,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:35,419 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:11:35,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:11:35,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1069793572, now seen corresponding path program 1 times [2021-01-07 05:11:35,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:11:35,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693110728] [2021-01-07 05:11:35,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:11:35,446 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 05:11:35,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258261858] [2021-01-07 05:11:35,446 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 [2021-01-07 05:11:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:11:35,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-07 05:11:35,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:11:35,566 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 [2021-01-07 05:11:35,567 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:35,570 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:35,571 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:11:35,572 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-01-07 05:11:35,628 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:35,629 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2021-01-07 05:11:35,632 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:35,649 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2021-01-07 05:11:35,651 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:11:35,652 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2021-01-07 05:11:35,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:11:35,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693110728] [2021-01-07 05:11:35,664 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 05:11:35,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258261858] [2021-01-07 05:11:35,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:11:35,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:11:35,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206288878] [2021-01-07 05:11:35,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:11:35,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:11:35,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:11:35,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:11:35,667 INFO L87 Difference]: Start difference. First operand 101 states and 106 transitions. Second operand 5 states. [2021-01-07 05:11:35,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:11:35,916 INFO L93 Difference]: Finished difference Result 133 states and 139 transitions. [2021-01-07 05:11:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:11:35,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-01-07 05:11:35,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:11:35,918 INFO L225 Difference]: With dead ends: 133 [2021-01-07 05:11:35,918 INFO L226 Difference]: Without dead ends: 133 [2021-01-07 05:11:35,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:11:35,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-01-07 05:11:35,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 98. [2021-01-07 05:11:35,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-01-07 05:11:35,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2021-01-07 05:11:35,928 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 18 [2021-01-07 05:11:35,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:11:35,929 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2021-01-07 05:11:35,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:11:35,929 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2021-01-07 05:11:35,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-07 05:11:35,930 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:11:35,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:11:36,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:36,132 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:11:36,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:11:36,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1069793571, now seen corresponding path program 1 times [2021-01-07 05:11:36,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:11:36,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288699468] [2021-01-07 05:11:36,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:11:36,148 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 05:11:36,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028213669] [2021-01-07 05:11:36,149 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:11:36,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-07 05:11:36,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:11:36,316 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 [2021-01-07 05:11:36,317 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:36,334 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:36,340 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 8 treesize of output 7 [2021-01-07 05:11:36,341 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:36,358 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:36,370 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:11:36,371 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:40 [2021-01-07 05:11:36,698 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:11:36,701 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:11:36,706 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:11:36,733 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:36,734 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 [2021-01-07 05:11:36,736 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:11:36,739 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:36,751 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:36,751 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 [2021-01-07 05:11:36,754 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:11:36,756 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:36,805 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:36,822 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-01-07 05:11:36,824 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:36,833 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-01-07 05:11:36,837 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:36,940 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2021-01-07 05:11:36,942 INFO L625 ElimStorePlain]: treesize reduction 4, result has 92.7 percent of original size [2021-01-07 05:11:36,945 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2021-01-07 05:11:36,946 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:69, output treesize:51 [2021-01-07 05:11:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:11:37,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288699468] [2021-01-07 05:11:37,032 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 05:11:37,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028213669] [2021-01-07 05:11:37,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:11:37,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-07 05:11:37,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494265209] [2021-01-07 05:11:37,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:11:37,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:11:37,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:11:37,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:11:37,035 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand 7 states. [2021-01-07 05:11:37,200 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2021-01-07 05:11:37,526 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-01-07 05:11:38,085 WARN L197 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2021-01-07 05:11:38,639 WARN L197 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-01-07 05:11:39,239 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-01-07 05:11:39,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:11:39,921 INFO L93 Difference]: Finished difference Result 133 states and 139 transitions. [2021-01-07 05:11:39,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:11:39,922 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-01-07 05:11:39,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:11:39,924 INFO L225 Difference]: With dead ends: 133 [2021-01-07 05:11:39,924 INFO L226 Difference]: Without dead ends: 133 [2021-01-07 05:11:39,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:11:39,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-01-07 05:11:39,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 97. [2021-01-07 05:11:39,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-01-07 05:11:39,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 102 transitions. [2021-01-07 05:11:39,934 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 102 transitions. Word has length 18 [2021-01-07 05:11:39,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:11:39,935 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 102 transitions. [2021-01-07 05:11:39,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:11:39,935 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 102 transitions. [2021-01-07 05:11:39,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:11:39,936 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:11:39,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:11:40,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:40,153 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:11:40,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:11:40,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1196137661, now seen corresponding path program 1 times [2021-01-07 05:11:40,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:11:40,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291203129] [2021-01-07 05:11:40,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:11:40,171 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 05:11:40,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151750594] [2021-01-07 05:11:40,172 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:11:40,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-07 05:11:40,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:11:40,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:11:40,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291203129] [2021-01-07 05:11:40,291 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 05:11:40,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151750594] [2021-01-07 05:11:40,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:11:40,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:11:40,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946836359] [2021-01-07 05:11:40,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:11:40,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:11:40,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:11:40,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:11:40,307 INFO L87 Difference]: Start difference. First operand 97 states and 102 transitions. Second operand 3 states. [2021-01-07 05:11:40,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:11:40,406 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2021-01-07 05:11:40,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:11:40,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-01-07 05:11:40,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:11:40,409 INFO L225 Difference]: With dead ends: 98 [2021-01-07 05:11:40,409 INFO L226 Difference]: Without dead ends: 98 [2021-01-07 05:11:40,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:11:40,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-07 05:11:40,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2021-01-07 05:11:40,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-01-07 05:11:40,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions. [2021-01-07 05:11:40,417 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 19 [2021-01-07 05:11:40,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:11:40,417 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 101 transitions. [2021-01-07 05:11:40,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:11:40,418 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions. [2021-01-07 05:11:40,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-07 05:11:40,418 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:11:40,418 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] [2021-01-07 05:11:40,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:40,633 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:11:40,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:11:40,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1562943074, now seen corresponding path program 1 times [2021-01-07 05:11:40,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:11:40,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356649866] [2021-01-07 05:11:40,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:11:40,657 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 05:11:40,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1107361029] [2021-01-07 05:11:40,658 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:11:40,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-07 05:11:40,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:11:40,790 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 [2021-01-07 05:11:40,791 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:40,794 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:40,795 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:11:40,795 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-01-07 05:11:40,843 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:40,844 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2021-01-07 05:11:40,846 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:40,866 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2021-01-07 05:11:40,867 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:11:40,869 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2021-01-07 05:11:40,916 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:40,917 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2021-01-07 05:11:40,921 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:40,938 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2021-01-07 05:11:40,940 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:11:40,940 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2021-01-07 05:11:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:11:40,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356649866] [2021-01-07 05:11:40,959 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 05:11:40,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107361029] [2021-01-07 05:11:40,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:11:40,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:11:40,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973261233] [2021-01-07 05:11:40,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:11:40,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:11:40,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:11:40,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:11:40,962 INFO L87 Difference]: Start difference. First operand 96 states and 101 transitions. Second operand 6 states. [2021-01-07 05:11:41,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:11:41,266 INFO L93 Difference]: Finished difference Result 128 states and 134 transitions. [2021-01-07 05:11:41,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:11:41,266 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2021-01-07 05:11:41,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:11:41,267 INFO L225 Difference]: With dead ends: 128 [2021-01-07 05:11:41,268 INFO L226 Difference]: Without dead ends: 128 [2021-01-07 05:11:41,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:11:41,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-01-07 05:11:41,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 93. [2021-01-07 05:11:41,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-01-07 05:11:41,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2021-01-07 05:11:41,276 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 21 [2021-01-07 05:11:41,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:11:41,276 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2021-01-07 05:11:41,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:11:41,276 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2021-01-07 05:11:41,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-07 05:11:41,277 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:11:41,277 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] [2021-01-07 05:11:41,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:41,493 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr45REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr46REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr44REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:11:41,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:11:41,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1562943073, now seen corresponding path program 1 times [2021-01-07 05:11:41,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:11:41,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128291280] [2021-01-07 05:11:41,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:11:41,515 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 05:11:41,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770080156] [2021-01-07 05:11:41,515 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:11:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:11:41,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 47 conjunts are in the unsatisfiable core [2021-01-07 05:11:41,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:11:41,717 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:11:41,796 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2021-01-07 05:11:41,894 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 [2021-01-07 05:11:41,895 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:41,911 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 [2021-01-07 05:11:41,914 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:47,198 WARN L197 SmtUtils]: Spent 5.28 s on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-01-07 05:11:47,200 INFO L625 ElimStorePlain]: treesize reduction 11, result has 92.3 percent of original size [2021-01-07 05:11:47,215 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 14 treesize of output 13 [2021-01-07 05:11:47,218 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:47,323 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-01-07 05:11:47,324 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:47,340 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 14 treesize of output 13 [2021-01-07 05:11:47,341 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:53,981 WARN L197 SmtUtils]: Spent 6.64 s on a formula simplification that was a NOOP. DAG size: 49 [2021-01-07 05:11:53,982 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:54,016 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2021-01-07 05:11:54,017 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:145, output treesize:130 [2021-01-07 05:11:55,599 WARN L197 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-01-07 05:11:55,622 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:11:58,118 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-01-07 05:11:58,423 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-01-07 05:11:58,525 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:11:58,600 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:11:58,652 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 05:11:58,709 INFO L443 ElimStorePlain]: Different costs {1=[|v_#length_53|], 3=[|v_#valid_73|]} [2021-01-07 05:11:58,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:11:58,738 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-01-07 05:11:58,740 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:58,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:11:58,768 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-01-07 05:11:58,770 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:58,942 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-01-07 05:11:58,942 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:59,001 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:59,002 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2021-01-07 05:11:59,004 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:11:59,007 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:59,054 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:59,055 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2021-01-07 05:11:59,058 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:11:59,061 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-01-07 05:11:59,212 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-01-07 05:11:59,213 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:11:59,239 INFO L547 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, End of recursive call: 8 dim-0 vars, and 2 xjuncts. [2021-01-07 05:11:59,240 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 10 variables, input treesize:163, output treesize:179 [2021-01-07 05:12:03,878 WARN L197 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2021-01-07 05:12:04,592 WARN L197 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-01-07 05:12:07,109 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-01-07 05:12:07,234 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:12:07,287 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:12:07,340 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:12:07,408 INFO L443 ElimStorePlain]: Different costs {1=[|v_#length_54|], 6=[|v_#valid_74|]} [2021-01-07 05:12:07,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:12:07,437 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-01-07 05:12:07,439 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:07,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:12:07,464 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-01-07 05:12:07,466 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:07,669 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-01-07 05:12:07,669 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:07,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:12:07,712 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:07,712 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-01-07 05:12:07,714 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:12:07,717 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:07,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:12:07,749 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:07,749 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-01-07 05:12:07,751 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:12:07,755 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-01-07 05:12:07,931 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-01-07 05:12:07,931 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:12:07,954 INFO L547 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 2 dim-1 vars, End of recursive call: 8 dim-0 vars, and 2 xjuncts. [2021-01-07 05:12:07,955 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 11 variables, input treesize:165, output treesize:125 [2021-01-07 05:12:08,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:12:08,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128291280] [2021-01-07 05:12:08,468 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 05:12:08,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770080156] [2021-01-07 05:12:08,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:12:08,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-01-07 05:12:08,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299625870] [2021-01-07 05:12:08,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:12:08,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:12:08,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:12:08,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=87, Unknown=2, NotChecked=0, Total=110 [2021-01-07 05:12:08,471 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand 11 states. [2021-01-07 05:12:24,213 WARN L197 SmtUtils]: Spent 13.45 s on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2021-01-07 05:13:23,703 WARN L197 SmtUtils]: Spent 56.49 s on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2021-01-07 05:15:13,434 WARN L197 SmtUtils]: Spent 1.82 m on a formula simplification. DAG size of input: 98 DAG size of output: 98 [2021-01-07 05:15:36,309 WARN L197 SmtUtils]: Spent 12.39 s on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2021-01-07 05:15:43,873 WARN L197 SmtUtils]: Spent 3.00 s on a formula simplification. DAG size of input: 69 DAG size of output: 67