./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-properties/list_flag-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 35987657 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/list-properties/list_flag-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 643182475b6f3736876ef9d58257e821498e53d566e4d81dd06a8f042f299e0b --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 16:41:56,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 16:41:56,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 16:41:56,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 16:41:56,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 16:41:56,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 16:41:56,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 16:41:56,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 16:41:56,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 16:41:56,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 16:41:56,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 16:41:56,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 16:41:56,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 16:41:56,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 16:41:56,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 16:41:56,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 16:41:56,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 16:41:56,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 16:41:56,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 16:41:56,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 16:41:56,229 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 16:41:56,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 16:41:56,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 16:41:56,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 16:41:56,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 16:41:56,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 16:41:56,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 16:41:56,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 16:41:56,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 16:41:56,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 16:41:56,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 16:41:56,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 16:41:56,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 16:41:56,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 16:41:56,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 16:41:56,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 16:41:56,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 16:41:56,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 16:41:56,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 16:41:56,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 16:41:56,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 16:41:56,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 16:41:56,251 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2022-07-21 16:41:56,275 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 16:41:56,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 16:41:56,276 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 16:41:56,276 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 16:41:56,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 16:41:56,277 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 16:41:56,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 16:41:56,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 16:41:56,278 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 16:41:56,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 16:41:56,279 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 16:41:56,279 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-21 16:41:56,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 16:41:56,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 16:41:56,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 16:41:56,279 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-21 16:41:56,280 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-21 16:41:56,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 16:41:56,280 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 16:41:56,280 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 16:41:56,280 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 16:41:56,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 16:41:56,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 16:41:56,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 16:41:56,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 16:41:56,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 16:41:56,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 16:41:56,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 16:41:56,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 16:41:56,281 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 643182475b6f3736876ef9d58257e821498e53d566e4d81dd06a8f042f299e0b [2022-07-21 16:41:56,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 16:41:56,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 16:41:56,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 16:41:56,534 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 16:41:56,534 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 16:41:56,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_flag-1.i [2022-07-21 16:41:56,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e881c2524/203540cf15884977a7201c88da8bc19e/FLAG20d06f69c [2022-07-21 16:41:56,985 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 16:41:56,985 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_flag-1.i [2022-07-21 16:41:56,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e881c2524/203540cf15884977a7201c88da8bc19e/FLAG20d06f69c [2022-07-21 16:41:57,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e881c2524/203540cf15884977a7201c88da8bc19e [2022-07-21 16:41:57,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 16:41:57,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 16:41:57,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 16:41:57,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 16:41:57,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 16:41:57,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:41:57" (1/1) ... [2022-07-21 16:41:57,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c32d23f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:57, skipping insertion in model container [2022-07-21 16:41:57,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:41:57" (1/1) ... [2022-07-21 16:41:57,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 16:41:57,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 16:41:57,522 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/list-properties/list_flag-1.i[23375,23388] [2022-07-21 16:41:57,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 16:41:57,531 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 16:41:57,557 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/list-properties/list_flag-1.i[23375,23388] [2022-07-21 16:41:57,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 16:41:57,575 INFO L208 MainTranslator]: Completed translation [2022-07-21 16:41:57,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:57 WrapperNode [2022-07-21 16:41:57,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 16:41:57,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 16:41:57,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 16:41:57,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 16:41:57,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:57" (1/1) ... [2022-07-21 16:41:57,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:57" (1/1) ... [2022-07-21 16:41:57,612 INFO L137 Inliner]: procedures = 124, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2022-07-21 16:41:57,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 16:41:57,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 16:41:57,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 16:41:57,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 16:41:57,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:57" (1/1) ... [2022-07-21 16:41:57,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:57" (1/1) ... [2022-07-21 16:41:57,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:57" (1/1) ... [2022-07-21 16:41:57,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:57" (1/1) ... [2022-07-21 16:41:57,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:57" (1/1) ... [2022-07-21 16:41:57,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:57" (1/1) ... [2022-07-21 16:41:57,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:57" (1/1) ... [2022-07-21 16:41:57,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 16:41:57,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 16:41:57,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 16:41:57,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 16:41:57,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:57" (1/1) ... [2022-07-21 16:41:57,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 16:41:57,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:41:57,699 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) [2022-07-21 16:41:57,703 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 [2022-07-21 16:41:57,724 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-07-21 16:41:57,725 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-07-21 16:41:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 16:41:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 16:41:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 16:41:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 16:41:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 16:41:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 16:41:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 16:41:57,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 16:41:57,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 16:41:57,799 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 16:41:57,800 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 16:41:57,841 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-07-21 16:41:58,048 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 16:41:58,052 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 16:41:58,053 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-21 16:41:58,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:41:58 BoogieIcfgContainer [2022-07-21 16:41:58,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 16:41:58,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 16:41:58,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 16:41:58,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 16:41:58,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:41:57" (1/3) ... [2022-07-21 16:41:58,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4121a04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:41:58, skipping insertion in model container [2022-07-21 16:41:58,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:57" (2/3) ... [2022-07-21 16:41:58,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4121a04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:41:58, skipping insertion in model container [2022-07-21 16:41:58,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:41:58" (3/3) ... [2022-07-21 16:41:58,074 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2022-07-21 16:41:58,084 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 16:41:58,089 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-07-21 16:41:58,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 16:41:58,154 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5608d880, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@72c37b00 [2022-07-21 16:41:58,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-07-21 16:41:58,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 32 states have (on average 2.03125) internal successors, (65), 55 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:41:58,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 16:41:58,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:58,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 16:41:58,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-07-21 16:41:58,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:58,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1037517512, now seen corresponding path program 1 times [2022-07-21 16:41:58,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:58,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197850568] [2022-07-21 16:41:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:58,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:58,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:58,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:41:58,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197850568] [2022-07-21 16:41:58,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197850568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:41:58,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:41:58,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 16:41:58,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341792803] [2022-07-21 16:41:58,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:41:58,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 16:41:58,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:41:58,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 16:41:58,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 16:41:58,292 INFO L87 Difference]: Start difference. First operand has 57 states, 32 states have (on average 2.03125) internal successors, (65), 55 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-07-21 16:41:58,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:41:58,303 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2022-07-21 16:41:58,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 16:41:58,305 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-07-21 16:41:58,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:41:58,309 INFO L225 Difference]: With dead ends: 57 [2022-07-21 16:41:58,309 INFO L226 Difference]: Without dead ends: 51 [2022-07-21 16:41:58,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 16:41:58,315 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:41:58,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 16:41:58,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-07-21 16:41:58,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-07-21 16:41:58,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.896551724137931) internal successors, (55), 50 states have internal predecessors, (55), 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) [2022-07-21 16:41:58,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2022-07-21 16:41:58,345 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 6 [2022-07-21 16:41:58,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:41:58,345 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2022-07-21 16:41:58,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-07-21 16:41:58,346 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2022-07-21 16:41:58,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 16:41:58,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:58,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:41:58,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 16:41:58,348 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-07-21 16:41:58,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:58,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2098238129, now seen corresponding path program 1 times [2022-07-21 16:41:58,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:58,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932767869] [2022-07-21 16:41:58,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:58,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:58,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:41:58,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932767869] [2022-07-21 16:41:58,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932767869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:41:58,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:41:58,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 16:41:58,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2177681] [2022-07-21 16:41:58,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:41:58,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 16:41:58,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:41:58,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 16:41:58,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 16:41:58,412 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-07-21 16:41:58,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:41:58,499 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2022-07-21 16:41:58,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 16:41:58,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-07-21 16:41:58,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:41:58,501 INFO L225 Difference]: With dead ends: 59 [2022-07-21 16:41:58,501 INFO L226 Difference]: Without dead ends: 59 [2022-07-21 16:41:58,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:41:58,503 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 94 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:41:58,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 25 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:41:58,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-07-21 16:41:58,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2022-07-21 16:41:58,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 53 states have internal predecessors, (65), 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) [2022-07-21 16:41:58,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2022-07-21 16:41:58,513 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 7 [2022-07-21 16:41:58,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:41:58,513 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2022-07-21 16:41:58,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-07-21 16:41:58,514 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2022-07-21 16:41:58,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 16:41:58,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:58,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:41:58,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 16:41:58,515 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-07-21 16:41:58,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:58,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2098238130, now seen corresponding path program 1 times [2022-07-21 16:41:58,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:58,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642275456] [2022-07-21 16:41:58,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:58,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:58,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:58,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:41:58,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642275456] [2022-07-21 16:41:58,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642275456] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:41:58,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:41:58,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 16:41:58,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315276598] [2022-07-21 16:41:58,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:41:58,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 16:41:58,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:41:58,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 16:41:58,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 16:41:58,608 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-07-21 16:41:58,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:41:58,708 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2022-07-21 16:41:58,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 16:41:58,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-07-21 16:41:58,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:41:58,711 INFO L225 Difference]: With dead ends: 72 [2022-07-21 16:41:58,711 INFO L226 Difference]: Without dead ends: 72 [2022-07-21 16:41:58,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:41:58,716 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 97 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:41:58,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 40 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:41:58,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-07-21 16:41:58,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 63. [2022-07-21 16:41:58,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 62 states have internal predecessors, (71), 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) [2022-07-21 16:41:58,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2022-07-21 16:41:58,722 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 7 [2022-07-21 16:41:58,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:41:58,722 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2022-07-21 16:41:58,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-07-21 16:41:58,722 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2022-07-21 16:41:58,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-21 16:41:58,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:58,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:41:58,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 16:41:58,723 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-07-21 16:41:58,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:58,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1259067004, now seen corresponding path program 1 times [2022-07-21 16:41:58,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:58,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677279150] [2022-07-21 16:41:58,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:58,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 16:41:58,740 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 16:41:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 16:41:58,762 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 16:41:58,763 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 16:41:58,764 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK (21 of 22 remaining) [2022-07-21 16:41:58,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 22 remaining) [2022-07-21 16:41:58,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 22 remaining) [2022-07-21 16:41:58,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 22 remaining) [2022-07-21 16:41:58,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 22 remaining) [2022-07-21 16:41:58,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 22 remaining) [2022-07-21 16:41:58,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 22 remaining) [2022-07-21 16:41:58,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 22 remaining) [2022-07-21 16:41:58,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 22 remaining) [2022-07-21 16:41:58,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 22 remaining) [2022-07-21 16:41:58,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 22 remaining) [2022-07-21 16:41:58,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 22 remaining) [2022-07-21 16:41:58,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 22 remaining) [2022-07-21 16:41:58,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 22 remaining) [2022-07-21 16:41:58,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 22 remaining) [2022-07-21 16:41:58,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 22 remaining) [2022-07-21 16:41:58,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 22 remaining) [2022-07-21 16:41:58,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 22 remaining) [2022-07-21 16:41:58,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 22 remaining) [2022-07-21 16:41:58,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 22 remaining) [2022-07-21 16:41:58,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 22 remaining) [2022-07-21 16:41:58,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK (0 of 22 remaining) [2022-07-21 16:41:58,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 16:41:58,776 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-07-21 16:41:58,779 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 16:41:58,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:41:58 BoogieIcfgContainer [2022-07-21 16:41:58,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 16:41:58,801 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 16:41:58,801 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 16:41:58,801 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 16:41:58,802 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:41:58" (3/4) ... [2022-07-21 16:41:58,804 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-21 16:41:58,830 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 16:41:58,830 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 16:41:58,831 INFO L158 Benchmark]: Toolchain (without parser) took 1517.49ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.8MB in the beginning and 34.3MB in the end (delta: 510.2kB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2022-07-21 16:41:58,831 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 39.1MB in the beginning and 39.0MB in the end (delta: 81.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 16:41:58,832 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.18ms. Allocated memory is still 56.6MB. Free memory was 34.6MB in the beginning and 34.3MB in the end (delta: 354.9kB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-21 16:41:58,832 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.37ms. Allocated memory is still 56.6MB. Free memory was 34.3MB in the beginning and 32.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 16:41:58,832 INFO L158 Benchmark]: Boogie Preprocessor took 48.61ms. Allocated memory is still 56.6MB. Free memory was 32.2MB in the beginning and 30.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 16:41:58,832 INFO L158 Benchmark]: RCFGBuilder took 391.69ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 30.7MB in the beginning and 45.1MB in the end (delta: -14.4MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2022-07-21 16:41:58,833 INFO L158 Benchmark]: TraceAbstraction took 744.93ms. Allocated memory is still 69.2MB. Free memory was 44.5MB in the beginning and 36.0MB in the end (delta: 8.5MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2022-07-21 16:41:58,833 INFO L158 Benchmark]: Witness Printer took 29.41ms. Allocated memory is still 69.2MB. Free memory was 36.0MB in the beginning and 34.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 16:41:58,834 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 39.1MB in the beginning and 39.0MB in the end (delta: 81.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.18ms. Allocated memory is still 56.6MB. Free memory was 34.6MB in the beginning and 34.3MB in the end (delta: 354.9kB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.37ms. Allocated memory is still 56.6MB. Free memory was 34.3MB in the beginning and 32.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.61ms. Allocated memory is still 56.6MB. Free memory was 32.2MB in the beginning and 30.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 391.69ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 30.7MB in the beginning and 45.1MB in the end (delta: -14.4MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * TraceAbstraction took 744.93ms. Allocated memory is still 69.2MB. Free memory was 44.5MB in the beginning and 36.0MB in the end (delta: 8.5MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Witness Printer took 29.41ms. Allocated memory is still 69.2MB. Free memory was 36.0MB in the beginning and 34.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 531]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) VAL [a={-1:0}, flag=0] [L536] p = a VAL [a={-1:0}, flag=0, p={-1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={-1:0}, flag=0, p={-1:0}] [L549] p = a VAL [a={-1:0}, flag=0, p={-1:0}] [L550] COND FALSE !(\read(flag)) VAL [a={-1:0}, flag=0, p={-1:0}] [L554] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 58 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 191 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 191 mSDsluCounter, 128 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 109 mSDtfsCounter, 104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=3, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 83 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-21 16:41:58,874 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)