./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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/AutomizerReach.xml -i ../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a71ed7b24cb625c47cfb1b6ba9f6cdbf2879f063 ............................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:02:27,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:02:27,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:02:27,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:02:27,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:02:27,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:02:27,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:02:27,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:02:27,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:02:27,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:02:27,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:02:27,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:02:27,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:02:27,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:02:27,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:02:27,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:02:27,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:02:27,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:02:27,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:02:27,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:02:27,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:02:27,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:02:27,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:02:27,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:02:27,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:02:27,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:02:27,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:02:27,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:02:27,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:02:27,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:02:27,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:02:27,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:02:27,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:02:27,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:02:27,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:02:27,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:02:27,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:02:27,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:02:27,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:02:27,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:02:27,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:02:27,346 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:02:27,405 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:02:27,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:02:27,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:02:27,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:02:27,409 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:02:27,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:02:27,409 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:02:27,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:02:27,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:02:27,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:02:27,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:02:27,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:02:27,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:02:27,412 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:02:27,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:02:27,413 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:02:27,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:02:27,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:02:27,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:02:27,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:02:27,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:02:27,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:02:27,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:02:27,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:02:27,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:02:27,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:02:27,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:02:27,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:02:27,416 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:02:27,416 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a71ed7b24cb625c47cfb1b6ba9f6cdbf2879f063 [2020-10-25 22:02:27,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:02:27,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:02:27,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:02:27,889 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:02:27,890 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:02:27,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2020-10-25 22:02:27,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/858d52993/c6a8fd2055f74a9f9c38ef792b0df60f/FLAG25086ea6e [2020-10-25 22:02:28,564 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:02:28,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2020-10-25 22:02:28,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/858d52993/c6a8fd2055f74a9f9c38ef792b0df60f/FLAG25086ea6e [2020-10-25 22:02:28,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/858d52993/c6a8fd2055f74a9f9c38ef792b0df60f [2020-10-25 22:02:28,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:02:28,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:02:28,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:02:28,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:02:28,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:02:28,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:02:28" (1/1) ... [2020-10-25 22:02:28,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e956297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:28, skipping insertion in model container [2020-10-25 22:02:28,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:02:28" (1/1) ... [2020-10-25 22:02:28,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:02:29,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:02:29,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:02:29,381 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:02:29,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:02:29,602 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:02:29,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:29 WrapperNode [2020-10-25 22:02:29,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:02:29,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:02:29,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:02:29,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:02:29,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:29" (1/1) ... [2020-10-25 22:02:29,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:29" (1/1) ... [2020-10-25 22:02:29,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:02:29,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:02:29,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:02:29,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:02:29,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:29" (1/1) ... [2020-10-25 22:02:29,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:29" (1/1) ... [2020-10-25 22:02:29,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:29" (1/1) ... [2020-10-25 22:02:29,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:29" (1/1) ... [2020-10-25 22:02:29,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:29" (1/1) ... [2020-10-25 22:02:29,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:29" (1/1) ... [2020-10-25 22:02:29,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:29" (1/1) ... [2020-10-25 22:02:29,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:02:29,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:02:29,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:02:29,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:02:29,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:02:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-25 22:02:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-25 22:02:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:02:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-25 22:02:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:02:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-25 22:02:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:02:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:02:29,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:02:30,887 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:02:30,887 INFO L298 CfgBuilder]: Removed 177 assume(true) statements. [2020-10-25 22:02:30,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:02:30 BoogieIcfgContainer [2020-10-25 22:02:30,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:02:30,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:02:30,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:02:30,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:02:30,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:02:28" (1/3) ... [2020-10-25 22:02:30,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593a58a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:02:30, skipping insertion in model container [2020-10-25 22:02:30,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:02:29" (2/3) ... [2020-10-25 22:02:30,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593a58a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:02:30, skipping insertion in model container [2020-10-25 22:02:30,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:02:30" (3/3) ... [2020-10-25 22:02:30,898 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2020-10-25 22:02:30,910 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:02:30,915 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2020-10-25 22:02:30,929 INFO L253 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2020-10-25 22:02:30,960 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:02:30,960 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:02:30,960 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:02:30,960 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:02:30,960 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:02:30,960 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:02:30,961 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:02:30,961 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:02:30,998 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-10-25 22:02:31,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 22:02:31,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:02:31,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:02:31,006 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:02:31,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:02:31,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1362234285, now seen corresponding path program 1 times [2020-10-25 22:02:31,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:02:31,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893593188] [2020-10-25 22:02:31,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:02:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:02:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:02:31,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893593188] [2020-10-25 22:02:31,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:02:31,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 22:02:31,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864355201] [2020-10-25 22:02:31,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:02:31,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:02:31,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:02:31,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:02:31,288 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 2 states. [2020-10-25 22:02:31,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:02:31,337 INFO L93 Difference]: Finished difference Result 392 states and 626 transitions. [2020-10-25 22:02:31,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:02:31,339 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-10-25 22:02:31,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:02:31,352 INFO L225 Difference]: With dead ends: 392 [2020-10-25 22:02:31,352 INFO L226 Difference]: Without dead ends: 181 [2020-10-25 22:02:31,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:02:31,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-25 22:02:31,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2020-10-25 22:02:31,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-25 22:02:31,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2020-10-25 22:02:31,414 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 15 [2020-10-25 22:02:31,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:02:31,415 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2020-10-25 22:02:31,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:02:31,415 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2020-10-25 22:02:31,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-25 22:02:31,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:02:31,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:02:31,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:02:31,417 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:02:31,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:02:31,418 INFO L82 PathProgramCache]: Analyzing trace with hash 719905366, now seen corresponding path program 1 times [2020-10-25 22:02:31,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:02:31,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546471974] [2020-10-25 22:02:31,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:02:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:02:31,881 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2020-10-25 22:02:32,044 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2020-10-25 22:02:32,185 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2020-10-25 22:02:32,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:02:32,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546471974] [2020-10-25 22:02:32,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:02:32,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-25 22:02:32,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361458010] [2020-10-25 22:02:32,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-25 22:02:32,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:02:32,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-25 22:02:32,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-25 22:02:32,597 INFO L87 Difference]: Start difference. First operand 181 states and 192 transitions. Second operand 13 states. [2020-10-25 22:02:33,104 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-10-25 22:02:33,271 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-10-25 22:02:33,520 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2020-10-25 22:02:33,751 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-25 22:02:34,069 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-10-25 22:02:34,384 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-10-25 22:02:34,553 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2020-10-25 22:02:34,736 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2020-10-25 22:02:35,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:02:35,327 INFO L93 Difference]: Finished difference Result 304 states and 322 transitions. [2020-10-25 22:02:35,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-25 22:02:35,328 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-10-25 22:02:35,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:02:35,335 INFO L225 Difference]: With dead ends: 304 [2020-10-25 22:02:35,335 INFO L226 Difference]: Without dead ends: 296 [2020-10-25 22:02:35,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-10-25 22:02:35,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-25 22:02:35,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 182. [2020-10-25 22:02:35,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-25 22:02:35,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 194 transitions. [2020-10-25 22:02:35,378 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 194 transitions. Word has length 26 [2020-10-25 22:02:35,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:02:35,379 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 194 transitions. [2020-10-25 22:02:35,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-25 22:02:35,379 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 194 transitions. [2020-10-25 22:02:35,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-25 22:02:35,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:02:35,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:02:35,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 22:02:35,381 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:02:35,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:02:35,384 INFO L82 PathProgramCache]: Analyzing trace with hash 755526682, now seen corresponding path program 1 times [2020-10-25 22:02:35,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:02:35,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927723036] [2020-10-25 22:02:35,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:02:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:02:35,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:02:35,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927723036] [2020-10-25 22:02:35,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:02:35,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-25 22:02:35,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75448395] [2020-10-25 22:02:35,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-25 22:02:35,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:02:35,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-25 22:02:35,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-25 22:02:35,953 INFO L87 Difference]: Start difference. First operand 182 states and 194 transitions. Second operand 13 states. [2020-10-25 22:02:36,286 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-25 22:02:36,454 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-10-25 22:02:36,764 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-10-25 22:02:36,977 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-10-25 22:02:37,195 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-10-25 22:02:37,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:02:37,785 INFO L93 Difference]: Finished difference Result 324 states and 345 transitions. [2020-10-25 22:02:37,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-25 22:02:37,786 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2020-10-25 22:02:37,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:02:37,788 INFO L225 Difference]: With dead ends: 324 [2020-10-25 22:02:37,789 INFO L226 Difference]: Without dead ends: 316 [2020-10-25 22:02:37,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-25 22:02:37,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-25 22:02:37,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 180. [2020-10-25 22:02:37,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-25 22:02:37,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 192 transitions. [2020-10-25 22:02:37,807 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 192 transitions. Word has length 28 [2020-10-25 22:02:37,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:02:37,807 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 192 transitions. [2020-10-25 22:02:37,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-25 22:02:37,807 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 192 transitions. [2020-10-25 22:02:37,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-25 22:02:37,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:02:37,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:02:37,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 22:02:37,809 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:02:37,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:02:37,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1978781254, now seen corresponding path program 1 times [2020-10-25 22:02:37,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:02:37,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018536440] [2020-10-25 22:02:37,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:02:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:02:37,910 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:02:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:02:37,973 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:02:38,023 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 22:02:38,024 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 22:02:38,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 22:02:38,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:02:38 BoogieIcfgContainer [2020-10-25 22:02:38,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:02:38,110 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:02:38,110 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:02:38,110 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:02:38,111 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:02:30" (3/4) ... [2020-10-25 22:02:38,113 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 22:02:38,177 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:02:38,177 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:02:38,179 INFO L168 Benchmark]: Toolchain (without parser) took 9291.58 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 41.0 MB in the beginning and 41.9 MB in the end (delta: -919.5 kB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. [2020-10-25 22:02:38,180 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 44.0 MB. Free memory was 30.6 MB in the beginning and 30.6 MB in the end (delta: 30.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:02:38,181 INFO L168 Benchmark]: CACSL2BoogieTranslator took 695.30 ms. Allocated memory is still 56.6 MB. Free memory was 40.3 MB in the beginning and 29.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2020-10-25 22:02:38,183 INFO L168 Benchmark]: Boogie Procedure Inliner took 129.21 ms. Allocated memory is still 56.6 MB. Free memory was 28.8 MB in the beginning and 25.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:02:38,185 INFO L168 Benchmark]: Boogie Preprocessor took 65.18 ms. Allocated memory is still 56.6 MB. Free memory was 25.6 MB in the beginning and 36.7 MB in the end (delta: -11.1 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2020-10-25 22:02:38,185 INFO L168 Benchmark]: RCFGBuilder took 1087.95 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 36.7 MB in the beginning and 33.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2020-10-25 22:02:38,187 INFO L168 Benchmark]: TraceAbstraction took 7217.84 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 33.5 MB in the beginning and 46.1 MB in the end (delta: -12.6 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:02:38,189 INFO L168 Benchmark]: Witness Printer took 68.04 ms. Allocated memory is still 100.7 MB. Free memory was 46.1 MB in the beginning and 41.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 22:02:38,195 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 44.0 MB. Free memory was 30.6 MB in the beginning and 30.6 MB in the end (delta: 30.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 695.30 ms. Allocated memory is still 56.6 MB. Free memory was 40.3 MB in the beginning and 29.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 129.21 ms. Allocated memory is still 56.6 MB. Free memory was 28.8 MB in the beginning and 25.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.18 ms. Allocated memory is still 56.6 MB. Free memory was 25.6 MB in the beginning and 36.7 MB in the end (delta: -11.1 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1087.95 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 36.7 MB in the beginning and 33.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7217.84 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 33.5 MB in the beginning and 46.1 MB in the end (delta: -12.6 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. * Witness Printer took 68.04 ms. Allocated memory is still 100.7 MB. Free memory was 46.1 MB in the beginning and 41.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L639] const struct node *p1, *p2; [L588] struct node *list = ((void *)0); [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L591] COND FALSE !(__VERIFIER_nondet_int()) [L592] EXPR \read(*list) [L592] *pp2 = list [L593] COND FALSE !(__VERIFIER_nondet_int()) [L595] EXPR \read(*list) [L595] *pp1 = list [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L598] COND FALSE !(__VERIFIER_nondet_int()) [L599] EXPR \read(*list) [L599] return list; [L588] struct node *list = ((void *)0); [L599] return list; [L640] struct node *list = create_sll(&p1, &p2); [L642] \read(*p1) [L642] \read(*p2) [L626] COND FALSE !(!(beg)) [L627] COND FALSE !(!(end)) [L628] EXPR beg->next [L628] beg = beg->next [L628] COND TRUE end != beg [L629] COND TRUE !(beg) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "sll_to_dll_rev-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 207 locations, 20 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 487 SDtfs, 1029 SDslu, 2536 SDs, 0 SdLazy, 816 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=207occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 250 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 22405 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...