./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.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_simpl3.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 1fa38cbba4031a56736a5ec3c724b1da0a42c893b0e9010b5807defb3e1b19fa --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 14:07:07,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 14:07:07,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 14:07:07,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 14:07:07,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 14:07:07,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 14:07:07,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 14:07:07,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 14:07:07,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 14:07:07,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 14:07:07,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 14:07:07,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 14:07:07,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 14:07:07,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 14:07:07,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 14:07:07,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 14:07:07,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 14:07:07,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 14:07:07,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 14:07:07,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 14:07:07,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 14:07:07,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 14:07:07,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 14:07:07,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 14:07:07,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 14:07:07,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 14:07:07,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 14:07:07,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 14:07:07,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 14:07:07,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 14:07:07,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 14:07:07,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 14:07:07,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 14:07:07,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 14:07:07,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 14:07:07,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 14:07:07,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 14:07:07,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 14:07:07,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 14:07:07,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 14:07:07,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 14:07:07,388 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-15 14:07:07,409 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 14:07:07,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 14:07:07,410 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 14:07:07,410 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 14:07:07,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 14:07:07,410 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 14:07:07,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 14:07:07,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 14:07:07,411 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 14:07:07,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 14:07:07,411 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 14:07:07,411 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 14:07:07,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 14:07:07,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 14:07:07,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 14:07:07,412 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 14:07:07,412 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 14:07:07,412 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 14:07:07,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 14:07:07,412 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 14:07:07,412 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 14:07:07,412 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 14:07:07,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 14:07:07,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 14:07:07,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 14:07:07,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:07:07,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 14:07:07,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 14:07:07,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 14:07:07,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 14:07:07,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 14:07:07,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fa38cbba4031a56736a5ec3c724b1da0a42c893b0e9010b5807defb3e1b19fa [2021-12-15 14:07:07,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 14:07:07,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 14:07:07,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 14:07:07,621 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 14:07:07,622 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 14:07:07,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c [2021-12-15 14:07:07,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b6743148/52ccc999914346c78cf85c8cd83cdeb9/FLAG21fe6a80d [2021-12-15 14:07:08,042 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 14:07:08,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c [2021-12-15 14:07:08,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b6743148/52ccc999914346c78cf85c8cd83cdeb9/FLAG21fe6a80d [2021-12-15 14:07:08,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b6743148/52ccc999914346c78cf85c8cd83cdeb9 [2021-12-15 14:07:08,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 14:07:08,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 14:07:08,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 14:07:08,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 14:07:08,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 14:07:08,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:08,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1563a288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08, skipping insertion in model container [2021-12-15 14:07:08,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:08,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 14:07:08,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 14:07:08,605 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_simpl3.cil-2.c[2713,2726] [2021-12-15 14:07:08,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:07:08,677 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 14:07:08,690 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_simpl3.cil-2.c[2713,2726] [2021-12-15 14:07:08,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:07:08,741 INFO L208 MainTranslator]: Completed translation [2021-12-15 14:07:08,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08 WrapperNode [2021-12-15 14:07:08,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 14:07:08,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 14:07:08,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 14:07:08,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 14:07:08,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:08,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:08,797 INFO L137 Inliner]: procedures = 38, calls = 62, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 916 [2021-12-15 14:07:08,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 14:07:08,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 14:07:08,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 14:07:08,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 14:07:08,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:08,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:08,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:08,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:08,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:08,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:08,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:08,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 14:07:08,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 14:07:08,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 14:07:08,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 14:07:08,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:08,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:07:08,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:07:08,865 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 14:07:08,870 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 14:07:08,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 14:07:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2021-12-15 14:07:08,889 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2021-12-15 14:07:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-15 14:07:08,890 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-15 14:07:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-15 14:07:08,890 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-15 14:07:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-15 14:07:08,890 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-15 14:07:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 14:07:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-15 14:07:08,891 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-15 14:07:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 14:07:08,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 14:07:09,055 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 14:07:09,056 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 14:07:09,061 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:09,149 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-15 14:07:09,152 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-15 14:07:09,152 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:09,161 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-15 14:07:09,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-15 14:07:09,171 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:09,173 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:09,175 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:09,178 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:09,180 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:09,190 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:09,191 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:09,191 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:09,194 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:09,443 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##86: assume !false; [2021-12-15 14:07:09,443 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume false; [2021-12-15 14:07:09,443 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##171: assume !false; [2021-12-15 14:07:09,444 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##170: assume false; [2021-12-15 14:07:09,444 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !false; [2021-12-15 14:07:09,444 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume false; [2021-12-15 14:07:09,444 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume !false; [2021-12-15 14:07:09,444 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume false; [2021-12-15 14:07:09,444 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##32: assume !false; [2021-12-15 14:07:09,444 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume false; [2021-12-15 14:07:09,444 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2021-12-15 14:07:09,445 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2021-12-15 14:07:09,446 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##109: assume false; [2021-12-15 14:07:09,446 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##110: assume !false; [2021-12-15 14:07:09,446 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##119: assume !false; [2021-12-15 14:07:09,446 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##118: assume false; [2021-12-15 14:07:09,446 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##122: assume false; [2021-12-15 14:07:09,446 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume !false; [2021-12-15 14:07:09,448 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:09,490 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-12-15 14:07:09,491 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-12-15 14:07:09,494 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 14:07:09,507 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 14:07:09,507 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 14:07:09,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:07:09 BoogieIcfgContainer [2021-12-15 14:07:09,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 14:07:09,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 14:07:09,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 14:07:09,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 14:07:09,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 02:07:08" (1/3) ... [2021-12-15 14:07:09,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3036d0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:07:09, skipping insertion in model container [2021-12-15 14:07:09,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (2/3) ... [2021-12-15 14:07:09,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3036d0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:07:09, skipping insertion in model container [2021-12-15 14:07:09,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:07:09" (3/3) ... [2021-12-15 14:07:09,518 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-2.c [2021-12-15 14:07:09,522 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 14:07:09,522 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 14:07:09,562 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 14:07:09,570 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 14:07:09,570 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 14:07:09,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 193 states have (on average 1.4870466321243523) internal successors, (287), 215 states have internal predecessors, (287), 37 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (37), 32 states have call predecessors, (37), 37 states have call successors, (37) [2021-12-15 14:07:09,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 14:07:09,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:09,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:09,602 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:09,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:09,606 INFO L85 PathProgramCache]: Analyzing trace with hash -379437591, now seen corresponding path program 1 times [2021-12-15 14:07:09,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:09,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836562020] [2021-12-15 14:07:09,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:09,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:09,789 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 14:07:09,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:09,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836562020] [2021-12-15 14:07:09,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836562020] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:09,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:09,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:09,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118122717] [2021-12-15 14:07:09,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:09,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:09,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:09,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:09,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:09,823 INFO L87 Difference]: Start difference. First operand has 238 states, 193 states have (on average 1.4870466321243523) internal successors, (287), 215 states have internal predecessors, (287), 37 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (37), 32 states have call predecessors, (37), 37 states have call successors, (37) 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 14:07:09,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:09,898 INFO L93 Difference]: Finished difference Result 237 states and 338 transitions. [2021-12-15 14:07:09,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:09,900 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 14:07:09,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:09,912 INFO L225 Difference]: With dead ends: 237 [2021-12-15 14:07:09,912 INFO L226 Difference]: Without dead ends: 235 [2021-12-15 14:07:09,913 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 14:07:09,918 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 194 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:09,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 448 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:09,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-12-15 14:07:09,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234. [2021-12-15 14:07:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 191 states have (on average 1.4607329842931938) internal successors, (279), 211 states have internal predecessors, (279), 37 states have call successors, (37), 5 states have call predecessors, (37), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-15 14:07:09,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 335 transitions. [2021-12-15 14:07:09,981 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 335 transitions. Word has length 8 [2021-12-15 14:07:09,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:09,981 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 335 transitions. [2021-12-15 14:07:09,981 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 14:07:09,982 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 335 transitions. [2021-12-15 14:07:09,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 14:07:09,983 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:09,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:09,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 14:07:09,986 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:09,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:09,987 INFO L85 PathProgramCache]: Analyzing trace with hash 229440230, now seen corresponding path program 1 times [2021-12-15 14:07:09,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:09,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502399296] [2021-12-15 14:07:09,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:09,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:10,026 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 14:07:10,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:07:10,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502399296] [2021-12-15 14:07:10,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502399296] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:10,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:10,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:07:10,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486769269] [2021-12-15 14:07:10,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:10,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:10,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:07:10,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:10,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:10,028 INFO L87 Difference]: Start difference. First operand 234 states and 335 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 14:07:10,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:10,081 INFO L93 Difference]: Finished difference Result 233 states and 334 transitions. [2021-12-15 14:07:10,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:10,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2021-12-15 14:07:10,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:10,082 INFO L225 Difference]: With dead ends: 233 [2021-12-15 14:07:10,082 INFO L226 Difference]: Without dead ends: 229 [2021-12-15 14:07:10,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:07:10,084 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 214 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:10,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 392 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:10,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-15 14:07:10,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2021-12-15 14:07:10,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 187 states have (on average 1.4224598930481283) internal successors, (266), 206 states have internal predecessors, (266), 37 states have call successors, (37), 5 states have call predecessors, (37), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-15 14:07:10,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 322 transitions. [2021-12-15 14:07:10,091 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 322 transitions. Word has length 11 [2021-12-15 14:07:10,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:10,092 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 322 transitions. [2021-12-15 14:07:10,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 14:07:10,092 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 322 transitions. [2021-12-15 14:07:10,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-15 14:07:10,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:10,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:10,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 14:07:10,093 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:10,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:10,094 INFO L85 PathProgramCache]: Analyzing trace with hash 23733269, now seen corresponding path program 1 times [2021-12-15 14:07:10,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:07:10,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437360030] [2021-12-15 14:07:10,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:10,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:07:10,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 14:07:10,099 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 14:07:10,102 INFO L158 Benchmark]: Toolchain (without parser) took 1678.48ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 65.4MB in the beginning and 73.8MB in the end (delta: -8.4MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. [2021-12-15 14:07:10,102 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 96.5MB. Free memory was 53.5MB in the beginning and 53.4MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:07:10,103 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.71ms. Allocated memory is still 96.5MB. Free memory was 65.2MB in the beginning and 63.7MB in the end (delta: 1.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 14:07:10,103 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.44ms. Allocated memory is still 96.5MB. Free memory was 63.7MB in the beginning and 58.7MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 14:07:10,103 INFO L158 Benchmark]: Boogie Preprocessor took 43.10ms. Allocated memory is still 96.5MB. Free memory was 58.7MB in the beginning and 56.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:07:10,104 INFO L158 Benchmark]: RCFGBuilder took 668.27ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 56.0MB in the beginning and 75.9MB in the end (delta: -19.9MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2021-12-15 14:07:10,104 INFO L158 Benchmark]: TraceAbstraction took 589.00ms. Allocated memory is still 134.2MB. Free memory was 75.3MB in the beginning and 73.8MB in the end (delta: 1.5MB). Peak memory consumption was 551.3kB. Max. memory is 16.1GB. [2021-12-15 14:07:10,106 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 96.5MB. Free memory was 53.5MB in the beginning and 53.4MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.71ms. Allocated memory is still 96.5MB. Free memory was 65.2MB in the beginning and 63.7MB in the end (delta: 1.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.44ms. Allocated memory is still 96.5MB. Free memory was 63.7MB in the beginning and 58.7MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.10ms. Allocated memory is still 96.5MB. Free memory was 58.7MB in the beginning and 56.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 668.27ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 56.0MB in the beginning and 75.9MB in the end (delta: -19.9MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * TraceAbstraction took 589.00ms. Allocated memory is still 134.2MB. Free memory was 75.3MB in the beginning and 73.8MB in the end (delta: 1.5MB). Peak memory consumption was 551.3kB. 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 14:07:10,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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_simpl3.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 1fa38cbba4031a56736a5ec3c724b1da0a42c893b0e9010b5807defb3e1b19fa --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 14:07:11,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 14:07:11,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 14:07:11,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 14:07:11,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 14:07:11,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 14:07:11,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 14:07:11,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 14:07:11,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 14:07:11,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 14:07:11,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 14:07:11,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 14:07:11,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 14:07:11,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 14:07:11,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 14:07:11,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 14:07:11,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 14:07:11,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 14:07:11,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 14:07:11,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 14:07:11,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 14:07:11,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 14:07:11,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 14:07:11,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 14:07:11,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 14:07:11,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 14:07:11,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 14:07:11,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 14:07:11,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 14:07:11,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 14:07:11,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 14:07:11,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 14:07:11,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 14:07:11,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 14:07:11,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 14:07:11,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 14:07:11,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 14:07:11,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 14:07:11,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 14:07:11,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 14:07:11,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 14:07:11,919 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-15 14:07:11,947 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 14:07:11,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 14:07:11,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 14:07:11,948 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 14:07:11,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 14:07:11,949 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 14:07:11,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 14:07:11,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 14:07:11,950 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 14:07:11,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 14:07:11,951 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 14:07:11,951 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 14:07:11,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 14:07:11,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 14:07:11,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 14:07:11,952 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 14:07:11,952 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 14:07:11,952 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 14:07:11,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 14:07:11,952 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 14:07:11,953 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 14:07:11,953 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 14:07:11,953 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 14:07:11,953 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 14:07:11,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 14:07:11,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 14:07:11,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 14:07:11,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:07:11,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 14:07:11,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 14:07:11,954 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 14:07:11,954 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 14:07:11,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 14:07:11,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 14:07:11,955 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fa38cbba4031a56736a5ec3c724b1da0a42c893b0e9010b5807defb3e1b19fa [2021-12-15 14:07:12,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 14:07:12,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 14:07:12,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 14:07:12,259 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 14:07:12,260 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 14:07:12,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c [2021-12-15 14:07:12,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37a7ba2da/febe25297d7946e0a1a8a0c74b578577/FLAG2d1ad5dab [2021-12-15 14:07:12,699 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 14:07:12,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c [2021-12-15 14:07:12,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37a7ba2da/febe25297d7946e0a1a8a0c74b578577/FLAG2d1ad5dab [2021-12-15 14:07:13,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37a7ba2da/febe25297d7946e0a1a8a0c74b578577 [2021-12-15 14:07:13,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 14:07:13,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 14:07:13,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 14:07:13,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 14:07:13,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 14:07:13,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:07:13" (1/1) ... [2021-12-15 14:07:13,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78896a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:13, skipping insertion in model container [2021-12-15 14:07:13,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:07:13" (1/1) ... [2021-12-15 14:07:13,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 14:07:13,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 14:07:13,303 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_simpl3.cil-2.c[2713,2726] [2021-12-15 14:07:13,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:07:13,433 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 14:07:13,458 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_simpl3.cil-2.c[2713,2726] [2021-12-15 14:07:13,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:07:13,525 INFO L208 MainTranslator]: Completed translation [2021-12-15 14:07:13,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:13 WrapperNode [2021-12-15 14:07:13,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 14:07:13,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 14:07:13,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 14:07:13,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 14:07:13,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:13" (1/1) ... [2021-12-15 14:07:13,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:13" (1/1) ... [2021-12-15 14:07:13,585 INFO L137 Inliner]: procedures = 38, calls = 62, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 833 [2021-12-15 14:07:13,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 14:07:13,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 14:07:13,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 14:07:13,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 14:07:13,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:13" (1/1) ... [2021-12-15 14:07:13,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:13" (1/1) ... [2021-12-15 14:07:13,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:13" (1/1) ... [2021-12-15 14:07:13,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:13" (1/1) ... [2021-12-15 14:07:13,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:13" (1/1) ... [2021-12-15 14:07:13,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:13" (1/1) ... [2021-12-15 14:07:13,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:13" (1/1) ... [2021-12-15 14:07:13,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 14:07:13,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 14:07:13,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 14:07:13,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 14:07:13,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:13" (1/1) ... [2021-12-15 14:07:13,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:07:13,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:07:13,691 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 14:07:13,693 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 14:07:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 14:07:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2021-12-15 14:07:13,719 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2021-12-15 14:07:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 14:07:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-15 14:07:13,719 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-15 14:07:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-15 14:07:13,720 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-15 14:07:13,720 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-15 14:07:13,720 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-15 14:07:13,720 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-15 14:07:13,720 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-15 14:07:13,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 14:07:13,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 14:07:13,842 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 14:07:13,843 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 14:07:13,847 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:13,911 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-15 14:07:13,912 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-15 14:07:13,912 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:13,919 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-15 14:07:13,920 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-15 14:07:13,929 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:13,937 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:13,939 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:13,942 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:13,956 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:13,959 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:13,960 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:13,961 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:13,966 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:14,378 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##86: assume !false; [2021-12-15 14:07:14,378 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume false; [2021-12-15 14:07:14,379 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##171: assume !false; [2021-12-15 14:07:14,379 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##170: assume false; [2021-12-15 14:07:14,379 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !false; [2021-12-15 14:07:14,379 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume false; [2021-12-15 14:07:14,379 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume !false; [2021-12-15 14:07:14,379 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume false; [2021-12-15 14:07:14,379 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##32: assume !false; [2021-12-15 14:07:14,380 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume false; [2021-12-15 14:07:14,380 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2021-12-15 14:07:14,380 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2021-12-15 14:07:14,380 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##109: assume false; [2021-12-15 14:07:14,380 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##110: assume !false; [2021-12-15 14:07:14,380 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##119: assume !false; [2021-12-15 14:07:14,380 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##118: assume false; [2021-12-15 14:07:14,380 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##122: assume false; [2021-12-15 14:07:14,380 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume !false; [2021-12-15 14:07:14,384 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:14,415 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-12-15 14:07:14,415 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-12-15 14:07:14,431 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 14:07:14,438 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 14:07:14,438 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 14:07:14,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:07:14 BoogieIcfgContainer [2021-12-15 14:07:14,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 14:07:14,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 14:07:14,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 14:07:14,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 14:07:14,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 02:07:13" (1/3) ... [2021-12-15 14:07:14,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792cae0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:07:14, skipping insertion in model container [2021-12-15 14:07:14,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:13" (2/3) ... [2021-12-15 14:07:14,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792cae0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:07:14, skipping insertion in model container [2021-12-15 14:07:14,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:07:14" (3/3) ... [2021-12-15 14:07:14,447 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-2.c [2021-12-15 14:07:14,450 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 14:07:14,450 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 14:07:14,480 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 14:07:14,485 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 14:07:14,486 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 14:07:14,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 193 states have (on average 1.4870466321243523) internal successors, (287), 215 states have internal predecessors, (287), 37 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (37), 32 states have call predecessors, (37), 37 states have call successors, (37) [2021-12-15 14:07:14,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 14:07:14,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:14,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:14,508 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:14,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:14,512 INFO L85 PathProgramCache]: Analyzing trace with hash -379437591, now seen corresponding path program 1 times [2021-12-15 14:07:14,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:07:14,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131321673] [2021-12-15 14:07:14,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:14,523 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:07:14,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:07:14,525 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 14:07:14,562 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 14:07:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:14,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 14:07:14,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:07:14,685 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 14:07:14,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:07:14,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:07:14,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131321673] [2021-12-15 14:07:14,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131321673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:14,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:14,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:14,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231782710] [2021-12-15 14:07:14,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:14,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:14,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:07:14,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:14,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:14,721 INFO L87 Difference]: Start difference. First operand has 238 states, 193 states have (on average 1.4870466321243523) internal successors, (287), 215 states have internal predecessors, (287), 37 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (37), 32 states have call predecessors, (37), 37 states have call successors, (37) 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 14:07:14,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:14,785 INFO L93 Difference]: Finished difference Result 237 states and 338 transitions. [2021-12-15 14:07:14,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:14,787 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 14:07:14,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:14,800 INFO L225 Difference]: With dead ends: 237 [2021-12-15 14:07:14,800 INFO L226 Difference]: Without dead ends: 235 [2021-12-15 14:07:14,803 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 14:07:14,806 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 194 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:14,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 448 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:14,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-12-15 14:07:14,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234. [2021-12-15 14:07:14,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 191 states have (on average 1.4607329842931938) internal successors, (279), 211 states have internal predecessors, (279), 37 states have call successors, (37), 5 states have call predecessors, (37), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-15 14:07:14,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 335 transitions. [2021-12-15 14:07:14,868 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 335 transitions. Word has length 8 [2021-12-15 14:07:14,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:14,868 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 335 transitions. [2021-12-15 14:07:14,868 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 14:07:14,868 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 335 transitions. [2021-12-15 14:07:14,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 14:07:14,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:14,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:14,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 14:07:15,069 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 14:07:15,070 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:15,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:15,070 INFO L85 PathProgramCache]: Analyzing trace with hash 229440230, now seen corresponding path program 1 times [2021-12-15 14:07:15,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:07:15,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459831042] [2021-12-15 14:07:15,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:15,071 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:07:15,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:07:15,072 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 14:07:15,073 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 14:07:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:15,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 14:07:15,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:07:15,165 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 14:07:15,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:07:15,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:07:15,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459831042] [2021-12-15 14:07:15,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459831042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:15,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:15,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:07:15,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389370693] [2021-12-15 14:07:15,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:15,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:15,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:07:15,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:15,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:15,167 INFO L87 Difference]: Start difference. First operand 234 states and 335 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 14:07:15,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:15,208 INFO L93 Difference]: Finished difference Result 233 states and 334 transitions. [2021-12-15 14:07:15,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:15,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2021-12-15 14:07:15,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:15,209 INFO L225 Difference]: With dead ends: 233 [2021-12-15 14:07:15,209 INFO L226 Difference]: Without dead ends: 229 [2021-12-15 14:07:15,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 14:07:15,211 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 214 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:15,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 392 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:07:15,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-15 14:07:15,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2021-12-15 14:07:15,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 187 states have (on average 1.4224598930481283) internal successors, (266), 206 states have internal predecessors, (266), 37 states have call successors, (37), 5 states have call predecessors, (37), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-15 14:07:15,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 322 transitions. [2021-12-15 14:07:15,232 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 322 transitions. Word has length 11 [2021-12-15 14:07:15,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:15,233 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 322 transitions. [2021-12-15 14:07:15,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 14:07:15,233 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 322 transitions. [2021-12-15 14:07:15,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-15 14:07:15,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:15,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:07:15,245 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 14:07:15,447 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 14:07:15,448 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-15 14:07:15,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:15,448 INFO L85 PathProgramCache]: Analyzing trace with hash 23733269, now seen corresponding path program 1 times [2021-12-15 14:07:15,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:07:15,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872456966] [2021-12-15 14:07:15,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:15,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:07:15,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:07:15,450 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:07:15,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-15 14:07:15,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-15 14:07:15,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:07:15,706 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 14:07:15,708 INFO L158 Benchmark]: Toolchain (without parser) took 2628.35ms. Allocated memory was 50.3MB in the beginning and 75.5MB in the end (delta: 25.2MB). Free memory was 24.8MB in the beginning and 46.3MB in the end (delta: -21.5MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2021-12-15 14:07:15,709 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 50.3MB. Free memory was 32.3MB in the beginning and 32.2MB in the end (delta: 29.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:07:15,709 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.03ms. Allocated memory was 50.3MB in the beginning and 62.9MB in the end (delta: 12.6MB). Free memory was 24.6MB in the beginning and 36.5MB in the end (delta: -11.9MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-12-15 14:07:15,709 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.20ms. Allocated memory is still 62.9MB. Free memory was 36.5MB in the beginning and 32.1MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 14:07:15,709 INFO L158 Benchmark]: Boogie Preprocessor took 68.86ms. Allocated memory is still 62.9MB. Free memory was 32.1MB in the beginning and 43.5MB in the end (delta: -11.4MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2021-12-15 14:07:15,710 INFO L158 Benchmark]: RCFGBuilder took 784.70ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 43.5MB in the beginning and 52.3MB in the end (delta: -8.8MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2021-12-15 14:07:15,710 INFO L158 Benchmark]: TraceAbstraction took 1266.06ms. Allocated memory is still 75.5MB. Free memory was 51.7MB in the beginning and 46.3MB in the end (delta: 5.4MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2021-12-15 14:07:15,716 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 50.3MB. Free memory was 32.3MB in the beginning and 32.2MB in the end (delta: 29.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 444.03ms. Allocated memory was 50.3MB in the beginning and 62.9MB in the end (delta: 12.6MB). Free memory was 24.6MB in the beginning and 36.5MB in the end (delta: -11.9MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.20ms. Allocated memory is still 62.9MB. Free memory was 36.5MB in the beginning and 32.1MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.86ms. Allocated memory is still 62.9MB. Free memory was 32.1MB in the beginning and 43.5MB in the end (delta: -11.4MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * RCFGBuilder took 784.70ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 43.5MB in the beginning and 52.3MB in the end (delta: -8.8MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1266.06ms. Allocated memory is still 75.5MB. Free memory was 51.7MB in the beginning and 46.3MB in the end (delta: 5.4MB). Peak memory consumption was 4.1MB. 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 14:07:15,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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