./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-properties/simple-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version c3fed411 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/simple-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 7a8519f8a7c8757a31f412eb366ebcbc8dd5e899d9ff0dd6bfc4f50c36dfb89b --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 05:43:13,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 05:43:13,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 05:43:13,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 05:43:13,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 05:43:13,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 05:43:13,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 05:43:13,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 05:43:13,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 05:43:13,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 05:43:13,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 05:43:13,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 05:43:13,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 05:43:13,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 05:43:13,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 05:43:13,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 05:43:13,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 05:43:13,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 05:43:13,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 05:43:13,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 05:43:13,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 05:43:13,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 05:43:13,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 05:43:13,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 05:43:13,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 05:43:13,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 05:43:13,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 05:43:13,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 05:43:13,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 05:43:13,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 05:43:13,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 05:43:13,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 05:43:13,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 05:43:13,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 05:43:13,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 05:43:13,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 05:43:13,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 05:43:13,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 05:43:13,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 05:43:13,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 05:43:13,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 05:43:13,312 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-12-16 05:43:13,333 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 05:43:13,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 05:43:13,333 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 05:43:13,334 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 05:43:13,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 05:43:13,334 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 05:43:13,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 05:43:13,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 05:43:13,335 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 05:43:13,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 05:43:13,336 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 05:43:13,336 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 05:43:13,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 05:43:13,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 05:43:13,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 05:43:13,337 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 05:43:13,337 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 05:43:13,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 05:43:13,337 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 05:43:13,337 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 05:43:13,337 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 05:43:13,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 05:43:13,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 05:43:13,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 05:43:13,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 05:43:13,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 05:43:13,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 05:43:13,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 05:43:13,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 05:43:13,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 05:43:13,339 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a8519f8a7c8757a31f412eb366ebcbc8dd5e899d9ff0dd6bfc4f50c36dfb89b [2021-12-16 05:43:13,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 05:43:13,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 05:43:13,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 05:43:13,557 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 05:43:13,557 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 05:43:13,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple-1.i [2021-12-16 05:43:13,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66febe820/ef8b83f5905c49a29a932d4f39149d09/FLAG6af76814e [2021-12-16 05:43:13,963 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 05:43:13,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple-1.i [2021-12-16 05:43:13,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66febe820/ef8b83f5905c49a29a932d4f39149d09/FLAG6af76814e [2021-12-16 05:43:14,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66febe820/ef8b83f5905c49a29a932d4f39149d09 [2021-12-16 05:43:14,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 05:43:14,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 05:43:14,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 05:43:14,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 05:43:14,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 05:43:14,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:43:14" (1/1) ... [2021-12-16 05:43:14,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f41ed43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:14, skipping insertion in model container [2021-12-16 05:43:14,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:43:14" (1/1) ... [2021-12-16 05:43:14,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 05:43:14,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 05:43:14,592 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/simple-1.i[23237,23250] [2021-12-16 05:43:14,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 05:43:14,600 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 05:43:14,637 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/simple-1.i[23237,23250] [2021-12-16 05:43:14,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 05:43:14,655 INFO L208 MainTranslator]: Completed translation [2021-12-16 05:43:14,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:14 WrapperNode [2021-12-16 05:43:14,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 05:43:14,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 05:43:14,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 05:43:14,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 05:43:14,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:14" (1/1) ... [2021-12-16 05:43:14,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:14" (1/1) ... [2021-12-16 05:43:14,685 INFO L137 Inliner]: procedures = 124, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2021-12-16 05:43:14,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 05:43:14,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 05:43:14,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 05:43:14,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 05:43:14,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:14" (1/1) ... [2021-12-16 05:43:14,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:14" (1/1) ... [2021-12-16 05:43:14,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:14" (1/1) ... [2021-12-16 05:43:14,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:14" (1/1) ... [2021-12-16 05:43:14,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:14" (1/1) ... [2021-12-16 05:43:14,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:14" (1/1) ... [2021-12-16 05:43:14,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:14" (1/1) ... [2021-12-16 05:43:14,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 05:43:14,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 05:43:14,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 05:43:14,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 05:43:14,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:14" (1/1) ... [2021-12-16 05:43:14,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 05:43:14,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:43:14,777 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) [2021-12-16 05:43:14,780 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 [2021-12-16 05:43:14,847 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-12-16 05:43:14,849 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-12-16 05:43:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 05:43:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 05:43:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 05:43:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 05:43:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 05:43:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 05:43:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 05:43:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 05:43:14,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 05:43:14,975 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 05:43:14,992 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 05:43:15,020 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-12-16 05:43:15,178 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 05:43:15,182 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 05:43:15,183 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 05:43:15,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:43:15 BoogieIcfgContainer [2021-12-16 05:43:15,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 05:43:15,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 05:43:15,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 05:43:15,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 05:43:15,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:43:14" (1/3) ... [2021-12-16 05:43:15,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483ad2f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:43:15, skipping insertion in model container [2021-12-16 05:43:15,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:14" (2/3) ... [2021-12-16 05:43:15,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483ad2f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:43:15, skipping insertion in model container [2021-12-16 05:43:15,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:43:15" (3/3) ... [2021-12-16 05:43:15,204 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-1.i [2021-12-16 05:43:15,207 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 05:43:15,207 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-12-16 05:43:15,254 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 05:43:15,262 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 [2021-12-16 05:43:15,263 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-12-16 05:43:15,274 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 46 states have internal predecessors, (52), 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) [2021-12-16 05:43:15,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-16 05:43:15,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:15,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-16 05:43:15,288 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-16 05:43:15,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:15,294 INFO L85 PathProgramCache]: Analyzing trace with hash 33468268, now seen corresponding path program 1 times [2021-12-16 05:43:15,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:15,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583330849] [2021-12-16 05:43:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:15,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:15,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:15,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:15,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583330849] [2021-12-16 05:43:15,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583330849] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:15,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:15,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:43:15,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19873621] [2021-12-16 05:43:15,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:15,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:43:15,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:15,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:43:15,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:43:15,461 INFO L87 Difference]: Start difference. First operand has 48 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 46 states have internal predecessors, (52), 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 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-12-16 05:43:15,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:15,503 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2021-12-16 05:43:15,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:43:15,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-12-16 05:43:15,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:15,509 INFO L225 Difference]: With dead ends: 47 [2021-12-16 05:43:15,509 INFO L226 Difference]: Without dead ends: 41 [2021-12-16 05:43:15,510 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 [2021-12-16 05:43:15,514 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 41 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:15,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 29 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:43:15,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-12-16 05:43:15,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-12-16 05:43:15,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 1.75) internal successors, (42), 40 states have internal predecessors, (42), 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) [2021-12-16 05:43:15,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-12-16 05:43:15,546 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 5 [2021-12-16 05:43:15,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:15,546 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-12-16 05:43:15,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-12-16 05:43:15,546 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-12-16 05:43:15,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-16 05:43:15,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:15,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-16 05:43:15,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 05:43:15,562 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-16 05:43:15,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:15,563 INFO L85 PathProgramCache]: Analyzing trace with hash 33468269, now seen corresponding path program 1 times [2021-12-16 05:43:15,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:15,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119666648] [2021-12-16 05:43:15,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:15,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:15,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:15,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:15,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119666648] [2021-12-16 05:43:15,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119666648] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:15,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:15,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:43:15,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115091255] [2021-12-16 05:43:15,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:15,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:43:15,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:15,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:43:15,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:43:15,625 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-12-16 05:43:15,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:15,662 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2021-12-16 05:43:15,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:43:15,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-12-16 05:43:15,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:15,663 INFO L225 Difference]: With dead ends: 40 [2021-12-16 05:43:15,664 INFO L226 Difference]: Without dead ends: 40 [2021-12-16 05:43:15,664 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 [2021-12-16 05:43:15,665 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:15,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 22 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:43:15,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-16 05:43:15,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-12-16 05:43:15,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 39 states have internal predecessors, (41), 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) [2021-12-16 05:43:15,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-12-16 05:43:15,669 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 5 [2021-12-16 05:43:15,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:15,670 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-12-16 05:43:15,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-12-16 05:43:15,673 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-12-16 05:43:15,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 05:43:15,673 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:15,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:15,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 05:43:15,674 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-16 05:43:15,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:15,675 INFO L85 PathProgramCache]: Analyzing trace with hash 620752485, now seen corresponding path program 1 times [2021-12-16 05:43:15,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:15,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214508947] [2021-12-16 05:43:15,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:15,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:15,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:15,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:15,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214508947] [2021-12-16 05:43:15,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214508947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:15,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:15,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 05:43:15,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036305004] [2021-12-16 05:43:15,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:15,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:43:15,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:15,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:43:15,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:43:15,730 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-12-16 05:43:15,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:15,849 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2021-12-16 05:43:15,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 05:43:15,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2021-12-16 05:43:15,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:15,851 INFO L225 Difference]: With dead ends: 71 [2021-12-16 05:43:15,851 INFO L226 Difference]: Without dead ends: 71 [2021-12-16 05:43:15,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:43:15,852 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 68 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:15,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 31 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:43:15,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-12-16 05:43:15,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 44. [2021-12-16 05:43:15,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.59375) internal successors, (51), 43 states have internal predecessors, (51), 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) [2021-12-16 05:43:15,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2021-12-16 05:43:15,857 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 8 [2021-12-16 05:43:15,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:15,870 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2021-12-16 05:43:15,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-12-16 05:43:15,870 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2021-12-16 05:43:15,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 05:43:15,871 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:15,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:15,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 05:43:15,872 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-16 05:43:15,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:15,872 INFO L85 PathProgramCache]: Analyzing trace with hash 620752486, now seen corresponding path program 1 times [2021-12-16 05:43:15,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:15,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418934592] [2021-12-16 05:43:15,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:15,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:15,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:15,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418934592] [2021-12-16 05:43:15,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418934592] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:15,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:15,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 05:43:15,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409116253] [2021-12-16 05:43:15,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:15,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:43:15,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:15,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:43:15,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:43:15,953 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-12-16 05:43:16,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:16,017 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2021-12-16 05:43:16,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 05:43:16,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2021-12-16 05:43:16,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:16,019 INFO L225 Difference]: With dead ends: 60 [2021-12-16 05:43:16,019 INFO L226 Difference]: Without dead ends: 60 [2021-12-16 05:43:16,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:43:16,022 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 70 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:16,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 25 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:43:16,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-16 05:43:16,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2021-12-16 05:43:16,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 40 states have (on average 1.45) internal successors, (58), 51 states have internal predecessors, (58), 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) [2021-12-16 05:43:16,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2021-12-16 05:43:16,033 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 8 [2021-12-16 05:43:16,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:16,033 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2021-12-16 05:43:16,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-12-16 05:43:16,042 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2021-12-16 05:43:16,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 05:43:16,043 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:16,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:16,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 05:43:16,044 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-16 05:43:16,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:16,047 INFO L85 PathProgramCache]: Analyzing trace with hash -244401734, now seen corresponding path program 1 times [2021-12-16 05:43:16,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:16,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491369494] [2021-12-16 05:43:16,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:16,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:16,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:16,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491369494] [2021-12-16 05:43:16,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491369494] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:16,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:16,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 05:43:16,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771709665] [2021-12-16 05:43:16,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:16,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:43:16,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:16,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:43:16,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:43:16,090 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-12-16 05:43:16,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:16,135 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2021-12-16 05:43:16,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 05:43:16,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-12-16 05:43:16,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:16,139 INFO L225 Difference]: With dead ends: 57 [2021-12-16 05:43:16,139 INFO L226 Difference]: Without dead ends: 57 [2021-12-16 05:43:16,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:43:16,142 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 60 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:16,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 37 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:43:16,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-16 05:43:16,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2021-12-16 05:43:16,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 40 states have (on average 1.4) internal successors, (56), 51 states have internal predecessors, (56), 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) [2021-12-16 05:43:16,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2021-12-16 05:43:16,152 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 13 [2021-12-16 05:43:16,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:16,153 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2021-12-16 05:43:16,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-12-16 05:43:16,153 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2021-12-16 05:43:16,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-16 05:43:16,153 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:16,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:16,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 05:43:16,154 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-16 05:43:16,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:16,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1013521738, now seen corresponding path program 1 times [2021-12-16 05:43:16,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:16,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249634884] [2021-12-16 05:43:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:16,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:16,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:16,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:16,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249634884] [2021-12-16 05:43:16,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249634884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:16,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:16,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 05:43:16,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312799687] [2021-12-16 05:43:16,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:16,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 05:43:16,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:16,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 05:43:16,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-16 05:43:16,236 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-12-16 05:43:16,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:16,329 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2021-12-16 05:43:16,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 05:43:16,330 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 14 [2021-12-16 05:43:16,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:16,330 INFO L225 Difference]: With dead ends: 73 [2021-12-16 05:43:16,330 INFO L226 Difference]: Without dead ends: 73 [2021-12-16 05:43:16,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-16 05:43:16,331 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 32 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:16,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 110 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:43:16,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-12-16 05:43:16,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 53. [2021-12-16 05:43:16,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 52 states have internal predecessors, (57), 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) [2021-12-16 05:43:16,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2021-12-16 05:43:16,335 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 14 [2021-12-16 05:43:16,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:16,335 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2021-12-16 05:43:16,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-12-16 05:43:16,335 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2021-12-16 05:43:16,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-16 05:43:16,336 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:16,336 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:16,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 05:43:16,336 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-16 05:43:16,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:16,337 INFO L85 PathProgramCache]: Analyzing trace with hash 468354904, now seen corresponding path program 1 times [2021-12-16 05:43:16,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:16,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389257435] [2021-12-16 05:43:16,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:16,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:16,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:16,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:16,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389257435] [2021-12-16 05:43:16,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389257435] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:16,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:16,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 05:43:16,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891317848] [2021-12-16 05:43:16,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:16,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 05:43:16,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:16,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 05:43:16,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 05:43:16,379 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-12-16 05:43:16,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:16,461 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2021-12-16 05:43:16,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 05:43:16,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-12-16 05:43:16,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:16,462 INFO L225 Difference]: With dead ends: 65 [2021-12-16 05:43:16,462 INFO L226 Difference]: Without dead ends: 65 [2021-12-16 05:43:16,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-16 05:43:16,463 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 44 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:16,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 94 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:43:16,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-16 05:43:16,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51. [2021-12-16 05:43:16,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 41 states have (on average 1.3414634146341464) 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) [2021-12-16 05:43:16,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2021-12-16 05:43:16,466 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 16 [2021-12-16 05:43:16,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:16,466 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2021-12-16 05:43:16,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-12-16 05:43:16,467 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2021-12-16 05:43:16,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-16 05:43:16,467 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:16,467 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:16,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 05:43:16,467 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-16 05:43:16,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:16,468 INFO L85 PathProgramCache]: Analyzing trace with hash 468354905, now seen corresponding path program 1 times [2021-12-16 05:43:16,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:16,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790729495] [2021-12-16 05:43:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:16,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:16,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:16,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:16,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790729495] [2021-12-16 05:43:16,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790729495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:16,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:16,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 05:43:16,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667404729] [2021-12-16 05:43:16,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:16,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 05:43:16,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:16,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 05:43:16,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 05:43:16,525 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-12-16 05:43:16,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:16,641 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2021-12-16 05:43:16,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 05:43:16,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-12-16 05:43:16,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:16,642 INFO L225 Difference]: With dead ends: 61 [2021-12-16 05:43:16,642 INFO L226 Difference]: Without dead ends: 61 [2021-12-16 05:43:16,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-16 05:43:16,643 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 30 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:16,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 112 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:43:16,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-12-16 05:43:16,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 41. [2021-12-16 05:43:16,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.25) internal successors, (45), 40 states have internal predecessors, (45), 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) [2021-12-16 05:43:16,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2021-12-16 05:43:16,646 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 16 [2021-12-16 05:43:16,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:16,646 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-12-16 05:43:16,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-12-16 05:43:16,646 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-12-16 05:43:16,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-16 05:43:16,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:16,647 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:16,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 05:43:16,647 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-16 05:43:16,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:16,648 INFO L85 PathProgramCache]: Analyzing trace with hash 210852361, now seen corresponding path program 1 times [2021-12-16 05:43:16,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:16,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455328187] [2021-12-16 05:43:16,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:16,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:16,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:16,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:16,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455328187] [2021-12-16 05:43:16,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455328187] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:43:16,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112403254] [2021-12-16 05:43:16,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:16,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:43:16,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:43:16,727 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:43:16,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 05:43:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:16,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-16 05:43:16,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:43:16,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-16 05:43:16,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-16 05:43:17,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-16 05:43:17,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-16 05:43:17,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:17,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:43:17,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 49 [2021-12-16 05:43:17,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2021-12-16 05:43:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:17,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112403254] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:43:17,414 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:43:17,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 16 [2021-12-16 05:43:17,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502370887] [2021-12-16 05:43:17,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:43:17,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-16 05:43:17,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:17,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-16 05:43:17,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-12-16 05:43:17,417 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 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) [2021-12-16 05:43:17,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:17,571 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2021-12-16 05:43:17,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 05:43:17,572 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 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 17 [2021-12-16 05:43:17,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:17,572 INFO L225 Difference]: With dead ends: 57 [2021-12-16 05:43:17,572 INFO L226 Difference]: Without dead ends: 57 [2021-12-16 05:43:17,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2021-12-16 05:43:17,574 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 89 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:17,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 129 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 150 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2021-12-16 05:43:17,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-16 05:43:17,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 44. [2021-12-16 05:43:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 43 states have internal predecessors, (48), 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) [2021-12-16 05:43:17,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-12-16 05:43:17,581 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2021-12-16 05:43:17,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:17,581 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-12-16 05:43:17,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 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) [2021-12-16 05:43:17,581 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-12-16 05:43:17,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-16 05:43:17,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:17,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:17,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 05:43:17,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:43:17,799 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-16 05:43:17,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:17,799 INFO L85 PathProgramCache]: Analyzing trace with hash -2053512678, now seen corresponding path program 1 times [2021-12-16 05:43:17,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:17,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449172326] [2021-12-16 05:43:17,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:17,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 05:43:17,812 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 05:43:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 05:43:17,853 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 05:43:17,853 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-16 05:43:17,854 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK (17 of 18 remaining) [2021-12-16 05:43:17,855 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (16 of 18 remaining) [2021-12-16 05:43:17,856 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (15 of 18 remaining) [2021-12-16 05:43:17,856 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (14 of 18 remaining) [2021-12-16 05:43:17,856 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (13 of 18 remaining) [2021-12-16 05:43:17,856 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (12 of 18 remaining) [2021-12-16 05:43:17,856 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (11 of 18 remaining) [2021-12-16 05:43:17,856 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (10 of 18 remaining) [2021-12-16 05:43:17,856 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (9 of 18 remaining) [2021-12-16 05:43:17,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (8 of 18 remaining) [2021-12-16 05:43:17,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (7 of 18 remaining) [2021-12-16 05:43:17,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (6 of 18 remaining) [2021-12-16 05:43:17,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (5 of 18 remaining) [2021-12-16 05:43:17,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (4 of 18 remaining) [2021-12-16 05:43:17,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (3 of 18 remaining) [2021-12-16 05:43:17,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK (2 of 18 remaining) [2021-12-16 05:43:17,858 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (1 of 18 remaining) [2021-12-16 05:43:17,858 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (0 of 18 remaining) [2021-12-16 05:43:17,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 05:43:17,860 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:17,862 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 05:43:17,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:43:17 BoogieIcfgContainer [2021-12-16 05:43:17,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 05:43:17,877 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 05:43:17,878 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 05:43:17,878 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 05:43:17,878 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:43:15" (3/4) ... [2021-12-16 05:43:17,879 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-16 05:43:17,912 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 05:43:17,913 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 05:43:17,913 INFO L158 Benchmark]: Toolchain (without parser) took 3569.71ms. Allocated memory is still 161.5MB. Free memory was 132.5MB in the beginning and 66.6MB in the end (delta: 65.9MB). Peak memory consumption was 64.5MB. Max. memory is 16.1GB. [2021-12-16 05:43:17,913 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 92.3MB. Free memory was 50.0MB in the beginning and 49.9MB in the end (delta: 44.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 05:43:17,914 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.78ms. Allocated memory is still 161.5MB. Free memory was 132.5MB in the beginning and 132.4MB in the end (delta: 77.5kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 05:43:17,914 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.37ms. Allocated memory is still 161.5MB. Free memory was 132.4MB in the beginning and 130.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 05:43:17,914 INFO L158 Benchmark]: Boogie Preprocessor took 46.38ms. Allocated memory is still 161.5MB. Free memory was 130.3MB in the beginning and 128.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 05:43:17,914 INFO L158 Benchmark]: RCFGBuilder took 450.75ms. Allocated memory is still 161.5MB. Free memory was 128.8MB in the beginning and 115.6MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-16 05:43:17,914 INFO L158 Benchmark]: TraceAbstraction took 2691.73ms. Allocated memory is still 161.5MB. Free memory was 115.0MB in the beginning and 68.7MB in the end (delta: 46.3MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. [2021-12-16 05:43:17,915 INFO L158 Benchmark]: Witness Printer took 35.33ms. Allocated memory is still 161.5MB. Free memory was 68.7MB in the beginning and 66.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 05:43:17,916 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 92.3MB. Free memory was 50.0MB in the beginning and 49.9MB in the end (delta: 44.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 311.78ms. Allocated memory is still 161.5MB. Free memory was 132.5MB in the beginning and 132.4MB in the end (delta: 77.5kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.37ms. Allocated memory is still 161.5MB. Free memory was 132.4MB in the beginning and 130.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.38ms. Allocated memory is still 161.5MB. Free memory was 130.3MB in the beginning and 128.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 450.75ms. Allocated memory is still 161.5MB. Free memory was 128.8MB in the beginning and 115.6MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2691.73ms. Allocated memory is still 161.5MB. Free memory was 115.0MB in the beginning and 68.7MB in the end (delta: 46.3MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. * Witness Printer took 35.33ms. Allocated memory is still 161.5MB. Free memory was 68.7MB in the beginning and 66.6MB in the end (delta: 2.1MB). 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] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, p={-1:0}] [L536] a->h = 2 VAL [a={-1:0}, p={-1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L544] p->h = 2 VAL [a={-1:0}, p={-1:0}] [L545] p->n = 0 VAL [a={-1:0}, p={-1:0}] [L546] p = a VAL [a={-1:0}, p={-1:0}] [L547] COND TRUE p!=0 VAL [a={-1:0}, p={-1:0}] [L548] EXPR p->h VAL [a={-1:0}, p={-1:0}, p->h=2] [L548] COND FALSE !(p->h != 2) [L551] EXPR p->n VAL [a={-1:0}, p={-1:0}, p->n={0:0}] [L551] p = p->n [L547] COND FALSE !(p!=0) VAL [a={-1:0}, p={0:0}] [L553] return 0; VAL [\result=0, a={-1:0}, p={0:0}] - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 49 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 470 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 470 mSDsluCounter, 589 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 15 IncrementalHoareTripleChecker+Unchecked, 367 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 705 IncrementalHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 222 mSDtfsCounter, 705 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 32 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=6, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 107 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 125 ConstructedInterpolants, 1 QuantifiedInterpolants, 956 SizeOfPredicates, 10 NumberOfNonLiveVariables, 118 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 7/10 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! [2021-12-16 05:43:17,959 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)