/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/list-properties/simple-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 17:18:53,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 17:18:53,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 17:18:54,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 17:18:54,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 17:18:54,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 17:18:54,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 17:18:54,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 17:18:54,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 17:18:54,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 17:18:54,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 17:18:54,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 17:18:54,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 17:18:54,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 17:18:54,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 17:18:54,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 17:18:54,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 17:18:54,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 17:18:54,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 17:18:54,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 17:18:54,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 17:18:54,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 17:18:54,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 17:18:54,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 17:18:54,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 17:18:54,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 17:18:54,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 17:18:54,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 17:18:54,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 17:18:54,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 17:18:54,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 17:18:54,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 17:18:54,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 17:18:54,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 17:18:54,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 17:18:54,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 17:18:54,083 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 17:18:54,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 17:18:54,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 17:18:54,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 17:18:54,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 17:18:54,114 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 17:18:54,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 17:18:54,114 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 17:18:54,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 17:18:54,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 17:18:54,115 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 17:18:54,115 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 17:18:54,115 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 17:18:54,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 17:18:54,116 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 17:18:54,116 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 17:18:54,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 17:18:54,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 17:18:54,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 17:18:54,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:18:54,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 17:18:54,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 17:18:54,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 17:18:54,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 17:18:54,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 17:18:54,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 17:18:54,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 17:18:54,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 17:18:54,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 17:18:54,560 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 17:18:54,561 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 17:18:54,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple-2.i [2020-12-23 17:18:54,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/200c72b4a/bae64a0a5391408c949939cc10343c9f/FLAG68bee9dca [2020-12-23 17:18:55,464 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 17:18:55,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-properties/simple-2.i [2020-12-23 17:18:55,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/200c72b4a/bae64a0a5391408c949939cc10343c9f/FLAG68bee9dca [2020-12-23 17:18:55,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/200c72b4a/bae64a0a5391408c949939cc10343c9f [2020-12-23 17:18:55,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 17:18:55,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 17:18:55,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 17:18:55,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 17:18:55,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 17:18:55,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:18:55" (1/1) ... [2020-12-23 17:18:55,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c314fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:55, skipping insertion in model container [2020-12-23 17:18:55,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:18:55" (1/1) ... [2020-12-23 17:18:55,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 17:18:55,852 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] [2020-12-23 17:18:56,186 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-properties/simple-2.i[23225,23238] left hand side expression in assignment: lhs: VariableLHS[~p~0,] [2020-12-23 17:18:56,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:18:56,201 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] [2020-12-23 17:18:56,246 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-properties/simple-2.i[23225,23238] left hand side expression in assignment: lhs: VariableLHS[~p~0,] [2020-12-23 17:18:56,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:18:56,321 INFO L208 MainTranslator]: Completed translation [2020-12-23 17:18:56,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:56 WrapperNode [2020-12-23 17:18:56,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 17:18:56,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 17:18:56,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 17:18:56,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 17:18:56,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:56" (1/1) ... [2020-12-23 17:18:56,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:56" (1/1) ... [2020-12-23 17:18:56,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 17:18:56,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 17:18:56,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 17:18:56,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 17:18:56,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:56" (1/1) ... [2020-12-23 17:18:56,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:56" (1/1) ... [2020-12-23 17:18:56,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:56" (1/1) ... [2020-12-23 17:18:56,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:56" (1/1) ... [2020-12-23 17:18:56,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:56" (1/1) ... [2020-12-23 17:18:56,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:56" (1/1) ... [2020-12-23 17:18:56,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:56" (1/1) ... [2020-12-23 17:18:56,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 17:18:56,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 17:18:56,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 17:18:56,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 17:18:56,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:18:56,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 17:18:56,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 17:18:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 17:18:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 17:18:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 17:18:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 17:18:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 17:18:56,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 17:18:56,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 17:18:57,030 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 17:18:57,031 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-23 17:18:57,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:18:57 BoogieIcfgContainer [2020-12-23 17:18:57,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 17:18:57,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 17:18:57,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 17:18:57,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 17:18:57,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:18:55" (1/3) ... [2020-12-23 17:18:57,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e00a806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:18:57, skipping insertion in model container [2020-12-23 17:18:57,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:56" (2/3) ... [2020-12-23 17:18:57,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e00a806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:18:57, skipping insertion in model container [2020-12-23 17:18:57,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:18:57" (3/3) ... [2020-12-23 17:18:57,049 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-2.i [2020-12-23 17:18:57,057 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 17:18:57,061 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-12-23 17:18:57,086 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-12-23 17:18:57,115 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 17:18:57,116 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 17:18:57,116 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 17:18:57,116 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 17:18:57,116 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 17:18:57,116 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 17:18:57,117 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 17:18:57,117 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 17:18:57,145 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-23 17:18:57,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 17:18:57,151 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:57,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 17:18:57,153 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 17:18:57,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:57,159 INFO L82 PathProgramCache]: Analyzing trace with hash 889599944, now seen corresponding path program 1 times [2020-12-23 17:18:57,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:57,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295813472] [2020-12-23 17:18:57,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:57,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:57,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295813472] [2020-12-23 17:18:57,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:57,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:18:57,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122444463] [2020-12-23 17:18:57,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 17:18:57,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:57,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 17:18:57,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 17:18:57,360 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-23 17:18:57,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:57,378 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-12-23 17:18:57,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 17:18:57,380 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-23 17:18:57,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:57,389 INFO L225 Difference]: With dead ends: 43 [2020-12-23 17:18:57,390 INFO L226 Difference]: Without dead ends: 39 [2020-12-23 17:18:57,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 17:18:57,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-23 17:18:57,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-23 17:18:57,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 17:18:57,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-12-23 17:18:57,432 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 6 [2020-12-23 17:18:57,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:57,432 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-12-23 17:18:57,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 17:18:57,433 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-12-23 17:18:57,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 17:18:57,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:57,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:57,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 17:18:57,434 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 17:18:57,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:57,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1807769731, now seen corresponding path program 1 times [2020-12-23 17:18:57,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:57,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183321266] [2020-12-23 17:18:57,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:57,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183321266] [2020-12-23 17:18:57,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:57,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:18:57,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796345828] [2020-12-23 17:18:57,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:18:57,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:57,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:18:57,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:18:57,537 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 4 states. [2020-12-23 17:18:57,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:57,646 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-12-23 17:18:57,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:18:57,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 17:18:57,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:57,648 INFO L225 Difference]: With dead ends: 47 [2020-12-23 17:18:57,648 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 17:18:57,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:18:57,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 17:18:57,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-12-23 17:18:57,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-23 17:18:57,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-12-23 17:18:57,660 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 7 [2020-12-23 17:18:57,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:57,660 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-12-23 17:18:57,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:18:57,661 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-12-23 17:18:57,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 17:18:57,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:57,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:57,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 17:18:57,662 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 17:18:57,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:57,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1807769732, now seen corresponding path program 1 times [2020-12-23 17:18:57,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:57,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819317008] [2020-12-23 17:18:57,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:57,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:57,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819317008] [2020-12-23 17:18:57,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:57,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:18:57,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480111623] [2020-12-23 17:18:57,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:18:57,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:57,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:18:57,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:18:57,740 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 4 states. [2020-12-23 17:18:57,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:57,850 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2020-12-23 17:18:57,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:18:57,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 17:18:57,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:57,852 INFO L225 Difference]: With dead ends: 56 [2020-12-23 17:18:57,852 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 17:18:57,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:18:57,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 17:18:57,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2020-12-23 17:18:57,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-23 17:18:57,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-12-23 17:18:57,860 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 7 [2020-12-23 17:18:57,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:57,860 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-12-23 17:18:57,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:18:57,861 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-12-23 17:18:57,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 17:18:57,861 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:57,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:57,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 17:18:57,862 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 17:18:57,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:57,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1646105516, now seen corresponding path program 1 times [2020-12-23 17:18:57,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:57,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324554411] [2020-12-23 17:18:57,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:57,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:57,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324554411] [2020-12-23 17:18:57,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:57,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:18:57,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094981192] [2020-12-23 17:18:57,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:18:57,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:57,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:18:57,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:18:57,932 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2020-12-23 17:18:58,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:58,017 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2020-12-23 17:18:58,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:18:58,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 17:18:58,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:58,019 INFO L225 Difference]: With dead ends: 53 [2020-12-23 17:18:58,019 INFO L226 Difference]: Without dead ends: 53 [2020-12-23 17:18:58,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:18:58,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-23 17:18:58,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2020-12-23 17:18:58,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-23 17:18:58,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-12-23 17:18:58,026 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 12 [2020-12-23 17:18:58,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:58,026 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-12-23 17:18:58,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:18:58,027 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-12-23 17:18:58,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 17:18:58,027 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:58,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:58,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 17:18:58,028 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 17:18:58,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:58,029 INFO L82 PathProgramCache]: Analyzing trace with hash 510377448, now seen corresponding path program 1 times [2020-12-23 17:18:58,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:58,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217194037] [2020-12-23 17:18:58,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:58,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:58,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217194037] [2020-12-23 17:18:58,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:58,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 17:18:58,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780915146] [2020-12-23 17:18:58,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 17:18:58,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:58,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 17:18:58,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:18:58,189 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 7 states. [2020-12-23 17:18:58,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:58,376 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2020-12-23 17:18:58,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:18:58,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-12-23 17:18:58,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:58,378 INFO L225 Difference]: With dead ends: 85 [2020-12-23 17:18:58,378 INFO L226 Difference]: Without dead ends: 85 [2020-12-23 17:18:58,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:18:58,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-23 17:18:58,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 52. [2020-12-23 17:18:58,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 17:18:58,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-12-23 17:18:58,385 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 13 [2020-12-23 17:18:58,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:58,386 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-12-23 17:18:58,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 17:18:58,386 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-12-23 17:18:58,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 17:18:58,387 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:58,387 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:58,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 17:18:58,388 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 17:18:58,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:58,388 INFO L82 PathProgramCache]: Analyzing trace with hash -2016970890, now seen corresponding path program 1 times [2020-12-23 17:18:58,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:58,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396877991] [2020-12-23 17:18:58,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:58,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396877991] [2020-12-23 17:18:58,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:58,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:18:58,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208593738] [2020-12-23 17:18:58,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:18:58,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:58,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:18:58,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:18:58,460 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 6 states. [2020-12-23 17:18:58,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:58,608 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2020-12-23 17:18:58,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:18:58,609 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 17:18:58,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:58,610 INFO L225 Difference]: With dead ends: 64 [2020-12-23 17:18:58,610 INFO L226 Difference]: Without dead ends: 64 [2020-12-23 17:18:58,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:18:58,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-23 17:18:58,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 50. [2020-12-23 17:18:58,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 17:18:58,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-12-23 17:18:58,616 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 15 [2020-12-23 17:18:58,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:58,617 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-12-23 17:18:58,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:18:58,617 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-12-23 17:18:58,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 17:18:58,618 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:58,618 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:58,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 17:18:58,619 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 17:18:58,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:58,619 INFO L82 PathProgramCache]: Analyzing trace with hash -2016970889, now seen corresponding path program 1 times [2020-12-23 17:18:58,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:58,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093823767] [2020-12-23 17:18:58,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:58,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:58,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093823767] [2020-12-23 17:18:58,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:58,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:18:58,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855773409] [2020-12-23 17:18:58,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:18:58,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:58,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:18:58,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:18:58,709 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 6 states. [2020-12-23 17:18:58,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:58,900 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2020-12-23 17:18:58,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:18:58,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 17:18:58,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:58,902 INFO L225 Difference]: With dead ends: 60 [2020-12-23 17:18:58,902 INFO L226 Difference]: Without dead ends: 60 [2020-12-23 17:18:58,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:18:58,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-23 17:18:58,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 40. [2020-12-23 17:18:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-23 17:18:58,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-12-23 17:18:58,907 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 15 [2020-12-23 17:18:58,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:58,907 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-12-23 17:18:58,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:18:58,907 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-12-23 17:18:58,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 17:18:58,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:58,908 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:58,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 17:18:58,909 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 17:18:58,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:58,909 INFO L82 PathProgramCache]: Analyzing trace with hash 475164067, now seen corresponding path program 1 times [2020-12-23 17:18:58,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:58,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888631362] [2020-12-23 17:18:58,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:59,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888631362] [2020-12-23 17:18:59,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547740813] [2020-12-23 17:18:59,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:18:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:59,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 17:18:59,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:18:59,226 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2020-12-23 17:18:59,227 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:59,234 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:59,238 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2020-12-23 17:18:59,239 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:59,245 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:59,246 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:59,246 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2020-12-23 17:18:59,318 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 17:18:59,321 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:59,330 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:59,332 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 17:18:59,334 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 17:18:59,338 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:18:59,339 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:18:59,339 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2020-12-23 17:18:59,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:59,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:18:59,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 11 [2020-12-23 17:18:59,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425818126] [2020-12-23 17:18:59,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 17:18:59,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:59,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 17:18:59,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:18:59,348 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 11 states. [2020-12-23 17:18:59,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:59,580 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-12-23 17:18:59,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:18:59,581 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-12-23 17:18:59,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:59,582 INFO L225 Difference]: With dead ends: 55 [2020-12-23 17:18:59,582 INFO L226 Difference]: Without dead ends: 55 [2020-12-23 17:18:59,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-12-23 17:18:59,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-23 17:18:59,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 43. [2020-12-23 17:18:59,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 17:18:59,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-12-23 17:18:59,587 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 16 [2020-12-23 17:18:59,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:59,587 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-12-23 17:18:59,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 17:18:59,587 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-12-23 17:18:59,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:18:59,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:59,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:59,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-23 17:18:59,804 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 17:18:59,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:59,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1845182904, now seen corresponding path program 1 times [2020-12-23 17:18:59,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:59,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123953548] [2020-12-23 17:18:59,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 17:18:59,823 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 17:18:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 17:18:59,838 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 17:18:59,859 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 17:18:59,859 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 17:18:59,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 17:18:59,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 05:18:59 BoogieIcfgContainer [2020-12-23 17:18:59,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 17:18:59,892 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 17:18:59,892 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 17:18:59,892 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 17:18:59,892 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:18:57" (3/4) ... [2020-12-23 17:18:59,896 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 17:18:59,896 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 17:18:59,898 INFO L168 Benchmark]: Toolchain (without parser) took 4142.31 ms. Allocated memory was 158.3 MB in the beginning and 219.2 MB in the end (delta: 60.8 MB). Free memory was 131.2 MB in the beginning and 157.2 MB in the end (delta: -26.0 MB). Peak memory consumption was 35.3 MB. Max. memory is 8.0 GB. [2020-12-23 17:18:59,898 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 158.3 MB. Free memory is still 132.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:18:59,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 560.09 ms. Allocated memory is still 158.3 MB. Free memory was 130.9 MB in the beginning and 109.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:18:59,899 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.68 ms. Allocated memory is still 158.3 MB. Free memory was 109.1 MB in the beginning and 107.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:18:59,900 INFO L168 Benchmark]: Boogie Preprocessor took 32.74 ms. Allocated memory is still 158.3 MB. Free memory was 107.3 MB in the beginning and 105.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:18:59,901 INFO L168 Benchmark]: RCFGBuilder took 623.51 ms. Allocated memory is still 158.3 MB. Free memory was 105.9 MB in the beginning and 131.1 MB in the end (delta: -25.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-23 17:18:59,902 INFO L168 Benchmark]: TraceAbstraction took 2856.69 ms. Allocated memory was 158.3 MB in the beginning and 219.2 MB in the end (delta: 60.8 MB). Free memory was 130.6 MB in the beginning and 157.7 MB in the end (delta: -27.1 MB). Peak memory consumption was 35.3 MB. Max. memory is 8.0 GB. [2020-12-23 17:18:59,902 INFO L168 Benchmark]: Witness Printer took 4.66 ms. Allocated memory is still 219.2 MB. Free memory was 157.7 MB in the beginning and 157.2 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:18:59,906 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 158.3 MB. Free memory is still 132.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 560.09 ms. Allocated memory is still 158.3 MB. Free memory was 130.9 MB in the beginning and 109.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 51.68 ms. Allocated memory is still 158.3 MB. Free memory was 109.1 MB in the beginning and 107.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.74 ms. Allocated memory is still 158.3 MB. Free memory was 107.3 MB in the beginning and 105.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 623.51 ms. Allocated memory is still 158.3 MB. Free memory was 105.9 MB in the beginning and 131.1 MB in the end (delta: -25.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2856.69 ms. Allocated memory was 158.3 MB in the beginning and 219.2 MB in the end (delta: 60.8 MB). Free memory was 130.6 MB in the beginning and 157.7 MB in the end (delta: -27.1 MB). Peak memory consumption was 35.3 MB. Max. memory is 8.0 GB. * Witness Printer took 4.66 ms. Allocated memory is still 219.2 MB. Free memory was 157.7 MB in the beginning and 157.2 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) [L534] List t; [L535] List p = a; [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 1 [L544] p->n = 0 [L545] p = a [L546] COND TRUE p!=0 [L547] EXPR p->h [L547] COND FALSE !(p->h != 1) [L550] EXPR p->n [L550] p = p->n [L546] COND FALSE !(p!=0) [L552] return 0; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 214 SDtfs, 522 SDslu, 313 SDs, 0 SdLazy, 562 SolverSat, 81 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 98 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 8327 SizeOfPredicates, 10 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...