./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b15a3429ae983cb571408e453cffd56861eca4f5fc7e760aad97ad24a44474ad --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 14:07:08,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 14:07:08,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 14:07:08,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 14:07:08,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 14:07:08,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 14:07:08,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 14:07:08,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 14:07:08,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 14:07:08,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 14:07:08,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 14:07:08,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 14:07:08,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 14:07:08,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 14:07:08,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 14:07:08,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 14:07:08,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 14:07:08,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 14:07:08,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 14:07:08,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 14:07:08,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 14:07:08,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 14:07:08,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 14:07:08,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 14:07:08,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 14:07:08,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 14:07:08,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 14:07:08,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 14:07:08,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 14:07:08,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 14:07:08,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 14:07:08,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 14:07:08,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 14:07:08,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 14:07:08,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 14:07:08,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 14:07:08,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 14:07:08,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 14:07:08,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 14:07:08,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 14:07:08,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 14:07:08,149 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-15 14:07:08,178 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 14:07:08,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 14:07:08,179 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 14:07:08,179 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 14:07:08,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 14:07:08,180 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 14:07:08,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 14:07:08,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 14:07:08,180 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 14:07:08,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 14:07:08,181 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 14:07:08,182 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 14:07:08,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 14:07:08,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 14:07:08,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 14:07:08,182 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 14:07:08,182 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 14:07:08,182 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 14:07:08,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 14:07:08,183 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 14:07:08,183 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 14:07:08,183 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 14:07:08,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 14:07:08,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 14:07:08,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 14:07:08,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:07:08,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 14:07:08,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 14:07:08,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 14:07:08,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 14:07:08,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 14:07:08,185 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b15a3429ae983cb571408e453cffd56861eca4f5fc7e760aad97ad24a44474ad [2021-12-15 14:07:08,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 14:07:08,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 14:07:08,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 14:07:08,391 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 14:07:08,392 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 14:07:08,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c [2021-12-15 14:07:08,447 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/907757f70/78bab203e03442c29ce21907f6b82a0d/FLAG1ae337f29 [2021-12-15 14:07:08,961 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 14:07:08,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c [2021-12-15 14:07:08,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/907757f70/78bab203e03442c29ce21907f6b82a0d/FLAG1ae337f29 [2021-12-15 14:07:09,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/907757f70/78bab203e03442c29ce21907f6b82a0d [2021-12-15 14:07:09,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 14:07:09,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 14:07:09,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 14:07:09,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 14:07:09,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 14:07:09,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:07:09" (1/1) ... [2021-12-15 14:07:09,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a6b94c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:09, skipping insertion in model container [2021-12-15 14:07:09,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:07:09" (1/1) ... [2021-12-15 14:07:09,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 14:07:09,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 14:07:09,860 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c[48585,48598] [2021-12-15 14:07:09,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:07:09,891 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 14:07:09,980 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c[48585,48598] [2021-12-15 14:07:09,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:07:09,994 INFO L208 MainTranslator]: Completed translation [2021-12-15 14:07:09,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:09 WrapperNode [2021-12-15 14:07:09,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 14:07:09,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 14:07:09,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 14:07:09,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 14:07:10,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:09" (1/1) ... [2021-12-15 14:07:10,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:09" (1/1) ... [2021-12-15 14:07:10,069 INFO L137 Inliner]: procedures = 41, calls = 76, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 1331 [2021-12-15 14:07:10,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 14:07:10,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 14:07:10,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 14:07:10,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 14:07:10,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:09" (1/1) ... [2021-12-15 14:07:10,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:09" (1/1) ... [2021-12-15 14:07:10,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:09" (1/1) ... [2021-12-15 14:07:10,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:09" (1/1) ... [2021-12-15 14:07:10,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:09" (1/1) ... [2021-12-15 14:07:10,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:09" (1/1) ... [2021-12-15 14:07:10,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:09" (1/1) ... [2021-12-15 14:07:10,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 14:07:10,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 14:07:10,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 14:07:10,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 14:07:10,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:09" (1/1) ... [2021-12-15 14:07:10,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:07:10,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:07:10,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 14:07:10,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 14:07:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 14:07:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2021-12-15 14:07:10,214 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2021-12-15 14:07:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2021-12-15 14:07:10,214 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2021-12-15 14:07:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-15 14:07:10,214 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-15 14:07:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-15 14:07:10,215 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-15 14:07:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-15 14:07:10,215 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-15 14:07:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 14:07:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-15 14:07:10,215 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-15 14:07:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2021-12-15 14:07:10,216 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2021-12-15 14:07:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 14:07:10,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 14:07:10,517 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 14:07:10,522 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 14:07:10,527 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:10,591 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-15 14:07:10,591 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-15 14:07:10,592 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:10,600 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-15 14:07:10,601 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-15 14:07:10,611 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:10,620 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:10,625 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:10,627 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:10,630 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:10,631 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:10,634 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:11,133 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##170: assume !false; [2021-12-15 14:07:11,133 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##180: assume false; [2021-12-15 14:07:11,133 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##181: assume !false; [2021-12-15 14:07:11,133 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##67: assume !false; [2021-12-15 14:07:11,133 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##66: assume false; [2021-12-15 14:07:11,134 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##127: assume !false; [2021-12-15 14:07:11,134 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2021-12-15 14:07:11,134 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2021-12-15 14:07:11,134 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2021-12-15 14:07:11,134 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2021-12-15 14:07:11,134 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##169: assume false; [2021-12-15 14:07:11,134 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##236: assume !false; [2021-12-15 14:07:11,134 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##235: assume false; [2021-12-15 14:07:11,134 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##126: assume false; [2021-12-15 14:07:11,137 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:11,161 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-12-15 14:07:11,161 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-12-15 14:07:11,162 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:11,164 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:11,164 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:11,208 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2021-12-15 14:07:11,208 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2021-12-15 14:07:11,208 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2021-12-15 14:07:11,208 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2021-12-15 14:07:11,209 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2021-12-15 14:07:11,209 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2021-12-15 14:07:11,220 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 14:07:11,227 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 14:07:11,229 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 14:07:11,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:07:11 BoogieIcfgContainer [2021-12-15 14:07:11,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 14:07:11,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 14:07:11,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 14:07:11,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 14:07:11,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 02:07:09" (1/3) ... [2021-12-15 14:07:11,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6004b1bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:07:11, skipping insertion in model container [2021-12-15 14:07:11,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:09" (2/3) ... [2021-12-15 14:07:11,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6004b1bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:07:11, skipping insertion in model container [2021-12-15 14:07:11,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:07:11" (3/3) ... [2021-12-15 14:07:11,238 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-2.c [2021-12-15 14:07:11,243 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 14:07:11,243 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 14:07:11,273 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 14:07:11,277 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 14:07:11,278 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 14:07:11,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 319 states, 259 states have (on average 1.5250965250965252) internal successors, (395), 285 states have internal predecessors, (395), 50 states have call successors, (50), 7 states have call predecessors, (50), 7 states have return successors, (50), 45 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-15 14:07:11,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 14:07:11,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:11,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:11,297 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:11,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:11,301 INFO L85 PathProgramCache]: Analyzing trace with hash -207662691, now seen corresponding path program 1 times [2021-12-15 14:07:11,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:11,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804748270] [2021-12-15 14:07:11,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:11,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:11,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:11,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804748270] [2021-12-15 14:07:11,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804748270] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:11,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:11,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:11,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121741333] [2021-12-15 14:07:11,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:11,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:11,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:11,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:11,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:11,546 INFO L87 Difference]: Start difference. First operand has 319 states, 259 states have (on average 1.5250965250965252) internal successors, (395), 285 states have internal predecessors, (395), 50 states have call successors, (50), 7 states have call predecessors, (50), 7 states have return successors, (50), 45 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:11,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:11,635 INFO L93 Difference]: Finished difference Result 318 states and 469 transitions. [2021-12-15 14:07:11,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:11,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 14:07:11,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:11,648 INFO L225 Difference]: With dead ends: 318 [2021-12-15 14:07:11,651 INFO L226 Difference]: Without dead ends: 316 [2021-12-15 14:07:11,653 INFO L932 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 [2021-12-15 14:07:11,659 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 262 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:11,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 630 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:11,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-12-15 14:07:11,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2021-12-15 14:07:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 257 states have (on average 1.5058365758754864) internal successors, (387), 281 states have internal predecessors, (387), 50 states have call successors, (50), 7 states have call predecessors, (50), 6 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-15 14:07:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 466 transitions. [2021-12-15 14:07:11,724 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 466 transitions. Word has length 8 [2021-12-15 14:07:11,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:11,724 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 466 transitions. [2021-12-15 14:07:11,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:11,725 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 466 transitions. [2021-12-15 14:07:11,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-15 14:07:11,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:11,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:11,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 14:07:11,727 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:11,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:11,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1841054047, now seen corresponding path program 1 times [2021-12-15 14:07:11,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:11,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467700577] [2021-12-15 14:07:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:11,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:11,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 14:07:11,736 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 14:07:11,740 INFO L158 Benchmark]: Toolchain (without parser) took 2315.99ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 71.2MB in the beginning and 74.0MB in the end (delta: -2.8MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2021-12-15 14:07:11,741 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory was 57.8MB in the beginning and 57.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:07:11,742 INFO L158 Benchmark]: CACSL2BoogieTranslator took 569.99ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 71.2MB in the beginning and 87.5MB in the end (delta: -16.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 14:07:11,744 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.63ms. Allocated memory is still 125.8MB. Free memory was 87.5MB in the beginning and 80.6MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 14:07:11,744 INFO L158 Benchmark]: Boogie Preprocessor took 76.75ms. Allocated memory is still 125.8MB. Free memory was 80.6MB in the beginning and 76.9MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:07:11,745 INFO L158 Benchmark]: RCFGBuilder took 1084.56ms. Allocated memory is still 125.8MB. Free memory was 76.8MB in the beginning and 56.0MB in the end (delta: 20.9MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2021-12-15 14:07:11,746 INFO L158 Benchmark]: TraceAbstraction took 506.73ms. Allocated memory is still 125.8MB. Free memory was 55.4MB in the beginning and 74.0MB in the end (delta: -18.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:07:11,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory was 57.8MB in the beginning and 57.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 569.99ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 71.2MB in the beginning and 87.5MB in the end (delta: -16.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.63ms. Allocated memory is still 125.8MB. Free memory was 87.5MB in the beginning and 80.6MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.75ms. Allocated memory is still 125.8MB. Free memory was 80.6MB in the beginning and 76.9MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1084.56ms. Allocated memory is still 125.8MB. Free memory was 76.8MB in the beginning and 56.0MB in the end (delta: 20.9MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * TraceAbstraction took 506.73ms. Allocated memory is still 125.8MB. Free memory was 55.4MB in the beginning and 74.0MB in the end (delta: -18.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 14:07:11,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b15a3429ae983cb571408e453cffd56861eca4f5fc7e760aad97ad24a44474ad --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 14:07:13,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 14:07:13,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 14:07:13,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 14:07:13,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 14:07:13,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 14:07:13,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 14:07:13,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 14:07:13,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 14:07:13,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 14:07:13,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 14:07:13,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 14:07:13,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 14:07:13,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 14:07:13,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 14:07:13,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 14:07:13,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 14:07:13,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 14:07:13,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 14:07:13,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 14:07:13,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 14:07:13,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 14:07:13,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 14:07:13,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 14:07:13,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 14:07:13,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 14:07:13,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 14:07:13,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 14:07:13,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 14:07:13,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 14:07:13,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 14:07:13,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 14:07:13,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 14:07:13,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 14:07:13,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 14:07:13,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 14:07:13,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 14:07:13,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 14:07:13,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 14:07:13,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 14:07:13,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 14:07:13,757 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-15 14:07:13,780 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 14:07:13,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 14:07:13,781 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 14:07:13,781 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 14:07:13,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 14:07:13,782 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 14:07:13,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 14:07:13,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 14:07:13,783 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 14:07:13,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 14:07:13,784 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 14:07:13,784 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 14:07:13,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 14:07:13,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 14:07:13,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 14:07:13,784 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 14:07:13,785 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 14:07:13,785 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 14:07:13,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 14:07:13,785 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 14:07:13,785 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 14:07:13,785 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 14:07:13,785 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 14:07:13,785 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 14:07:13,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 14:07:13,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 14:07:13,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 14:07:13,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:07:13,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 14:07:13,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 14:07:13,787 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 14:07:13,787 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 14:07:13,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 14:07:13,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 14:07:13,787 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b15a3429ae983cb571408e453cffd56861eca4f5fc7e760aad97ad24a44474ad [2021-12-15 14:07:14,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 14:07:14,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 14:07:14,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 14:07:14,092 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 14:07:14,105 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 14:07:14,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c [2021-12-15 14:07:14,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31b3a30ed/50f9a2eb8b334a34add3fbc75ef94aeb/FLAGac5ce91c1 [2021-12-15 14:07:14,608 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 14:07:14,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c [2021-12-15 14:07:14,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31b3a30ed/50f9a2eb8b334a34add3fbc75ef94aeb/FLAGac5ce91c1 [2021-12-15 14:07:15,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31b3a30ed/50f9a2eb8b334a34add3fbc75ef94aeb [2021-12-15 14:07:15,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 14:07:15,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 14:07:15,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 14:07:15,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 14:07:15,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 14:07:15,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:07:15" (1/1) ... [2021-12-15 14:07:15,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc44a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:15, skipping insertion in model container [2021-12-15 14:07:15,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:07:15" (1/1) ... [2021-12-15 14:07:15,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 14:07:15,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 14:07:15,464 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c[48585,48598] [2021-12-15 14:07:15,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:07:15,489 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 14:07:15,612 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c[48585,48598] [2021-12-15 14:07:15,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:07:15,631 INFO L208 MainTranslator]: Completed translation [2021-12-15 14:07:15,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:15 WrapperNode [2021-12-15 14:07:15,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 14:07:15,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 14:07:15,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 14:07:15,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 14:07:15,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:15" (1/1) ... [2021-12-15 14:07:15,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:15" (1/1) ... [2021-12-15 14:07:15,742 INFO L137 Inliner]: procedures = 41, calls = 76, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 1193 [2021-12-15 14:07:15,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 14:07:15,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 14:07:15,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 14:07:15,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 14:07:15,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:15" (1/1) ... [2021-12-15 14:07:15,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:15" (1/1) ... [2021-12-15 14:07:15,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:15" (1/1) ... [2021-12-15 14:07:15,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:15" (1/1) ... [2021-12-15 14:07:15,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:15" (1/1) ... [2021-12-15 14:07:15,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:15" (1/1) ... [2021-12-15 14:07:15,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:15" (1/1) ... [2021-12-15 14:07:15,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 14:07:15,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 14:07:15,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 14:07:15,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 14:07:15,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:15" (1/1) ... [2021-12-15 14:07:15,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:07:15,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:07:15,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 14:07:15,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 14:07:15,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 14:07:15,916 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2021-12-15 14:07:15,916 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2021-12-15 14:07:15,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 14:07:15,916 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2021-12-15 14:07:15,916 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2021-12-15 14:07:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-15 14:07:15,917 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-15 14:07:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-15 14:07:15,917 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-15 14:07:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-15 14:07:15,917 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-15 14:07:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-15 14:07:15,918 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-15 14:07:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2021-12-15 14:07:15,918 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2021-12-15 14:07:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 14:07:15,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 14:07:16,204 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 14:07:16,205 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 14:07:16,211 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:16,273 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-15 14:07:16,274 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-15 14:07:16,274 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:16,281 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-15 14:07:16,282 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-15 14:07:16,291 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:16,296 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:16,301 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:16,303 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:16,306 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:16,307 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:16,316 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:16,703 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##170: assume !false; [2021-12-15 14:07:16,703 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##180: assume false; [2021-12-15 14:07:16,704 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##181: assume !false; [2021-12-15 14:07:16,704 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##67: assume !false; [2021-12-15 14:07:16,704 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##66: assume false; [2021-12-15 14:07:16,704 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##127: assume !false; [2021-12-15 14:07:16,704 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2021-12-15 14:07:16,704 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2021-12-15 14:07:16,704 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2021-12-15 14:07:16,705 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2021-12-15 14:07:16,705 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##169: assume false; [2021-12-15 14:07:16,705 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##236: assume !false; [2021-12-15 14:07:16,705 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##235: assume false; [2021-12-15 14:07:16,705 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##126: assume false; [2021-12-15 14:07:16,706 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:16,727 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-12-15 14:07:16,727 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-12-15 14:07:16,728 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:16,728 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:16,728 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:16,766 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2021-12-15 14:07:16,766 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2021-12-15 14:07:16,766 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2021-12-15 14:07:16,766 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2021-12-15 14:07:16,766 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2021-12-15 14:07:16,766 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2021-12-15 14:07:16,773 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 14:07:16,779 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 14:07:16,780 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 14:07:16,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:07:16 BoogieIcfgContainer [2021-12-15 14:07:16,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 14:07:16,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 14:07:16,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 14:07:16,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 14:07:16,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 02:07:15" (1/3) ... [2021-12-15 14:07:16,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324c0cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:07:16, skipping insertion in model container [2021-12-15 14:07:16,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:15" (2/3) ... [2021-12-15 14:07:16,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324c0cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:07:16, skipping insertion in model container [2021-12-15 14:07:16,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:07:16" (3/3) ... [2021-12-15 14:07:16,787 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-2.c [2021-12-15 14:07:16,790 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 14:07:16,791 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 14:07:16,819 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 14:07:16,823 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 14:07:16,824 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 14:07:16,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 319 states, 259 states have (on average 1.5250965250965252) internal successors, (395), 285 states have internal predecessors, (395), 50 states have call successors, (50), 7 states have call predecessors, (50), 7 states have return successors, (50), 45 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-15 14:07:16,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 14:07:16,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:16,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:16,841 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:16,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:16,844 INFO L85 PathProgramCache]: Analyzing trace with hash -207662691, now seen corresponding path program 1 times [2021-12-15 14:07:16,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:07:16,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761908834] [2021-12-15 14:07:16,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:16,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:07:16,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:07:16,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:07:16,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 14:07:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:16,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 14:07:16,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:07:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:17,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:07:17,058 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:07:17,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761908834] [2021-12-15 14:07:17,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761908834] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:17,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:17,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:17,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465637254] [2021-12-15 14:07:17,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:17,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:17,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:07:17,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:17,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:17,090 INFO L87 Difference]: Start difference. First operand has 319 states, 259 states have (on average 1.5250965250965252) internal successors, (395), 285 states have internal predecessors, (395), 50 states have call successors, (50), 7 states have call predecessors, (50), 7 states have return successors, (50), 45 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:17,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:17,144 INFO L93 Difference]: Finished difference Result 318 states and 469 transitions. [2021-12-15 14:07:17,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:17,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 14:07:17,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:17,154 INFO L225 Difference]: With dead ends: 318 [2021-12-15 14:07:17,154 INFO L226 Difference]: Without dead ends: 316 [2021-12-15 14:07:17,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:17,157 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 262 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:17,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 630 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:17,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-12-15 14:07:17,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2021-12-15 14:07:17,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 257 states have (on average 1.5058365758754864) internal successors, (387), 281 states have internal predecessors, (387), 50 states have call successors, (50), 7 states have call predecessors, (50), 6 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-15 14:07:17,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 466 transitions. [2021-12-15 14:07:17,213 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 466 transitions. Word has length 8 [2021-12-15 14:07:17,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:17,213 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 466 transitions. [2021-12-15 14:07:17,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 14:07:17,214 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 466 transitions. [2021-12-15 14:07:17,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-15 14:07:17,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:17,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:17,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 14:07:17,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:07:17,422 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:17,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:17,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1841054047, now seen corresponding path program 1 times [2021-12-15 14:07:17,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:07:17,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386252465] [2021-12-15 14:07:17,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:17,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:07:17,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:07:17,425 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:07:17,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 14:07:17,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-15 14:07:17,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:07:17,732 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 14:07:17,735 INFO L158 Benchmark]: Toolchain (without parser) took 2593.94ms. Allocated memory was 58.7MB in the beginning and 100.7MB in the end (delta: 41.9MB). Free memory was 33.2MB in the beginning and 73.4MB in the end (delta: -40.1MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2021-12-15 14:07:17,736 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 46.1MB. Free memory was 27.7MB in the beginning and 27.7MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:07:17,736 INFO L158 Benchmark]: CACSL2BoogieTranslator took 489.15ms. Allocated memory is still 58.7MB. Free memory was 33.0MB in the beginning and 28.9MB in the end (delta: 4.2MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2021-12-15 14:07:17,736 INFO L158 Benchmark]: Boogie Procedure Inliner took 110.83ms. Allocated memory is still 58.7MB. Free memory was 28.9MB in the beginning and 36.3MB in the end (delta: -7.4MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2021-12-15 14:07:17,737 INFO L158 Benchmark]: Boogie Preprocessor took 79.36ms. Allocated memory is still 58.7MB. Free memory was 36.3MB in the beginning and 32.5MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 14:07:17,737 INFO L158 Benchmark]: RCFGBuilder took 957.64ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 32.3MB in the beginning and 46.1MB in the end (delta: -13.8MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2021-12-15 14:07:17,737 INFO L158 Benchmark]: TraceAbstraction took 952.15ms. Allocated memory was 73.4MB in the beginning and 100.7MB in the end (delta: 27.3MB). Free memory was 45.8MB in the beginning and 73.4MB in the end (delta: -27.6MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2021-12-15 14:07:17,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 46.1MB. Free memory was 27.7MB in the beginning and 27.7MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 489.15ms. Allocated memory is still 58.7MB. Free memory was 33.0MB in the beginning and 28.9MB in the end (delta: 4.2MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 110.83ms. Allocated memory is still 58.7MB. Free memory was 28.9MB in the beginning and 36.3MB in the end (delta: -7.4MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.36ms. Allocated memory is still 58.7MB. Free memory was 36.3MB in the beginning and 32.5MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 957.64ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 32.3MB in the beginning and 46.1MB in the end (delta: -13.8MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. * TraceAbstraction took 952.15ms. Allocated memory was 73.4MB in the beginning and 100.7MB in the end (delta: 27.3MB). Free memory was 45.8MB in the beginning and 73.4MB in the end (delta: -27.6MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 14:07:17,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable