./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_18cbf30e-8ae1-42e8-93c0-f7043575b5a4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_18cbf30e-8ae1-42e8-93c0-f7043575b5a4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_18cbf30e-8ae1-42e8-93c0-f7043575b5a4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_18cbf30e-8ae1-42e8-93c0-f7043575b5a4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_18cbf30e-8ae1-42e8-93c0-f7043575b5a4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_18cbf30e-8ae1-42e8-93c0-f7043575b5a4/bin/uautomizer --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-a4ecdab [2020-11-29 23:26:29,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:26:29,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:26:29,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:26:29,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:26:29,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:26:29,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:26:29,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:26:29,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:26:29,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:26:29,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:26:29,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:26:29,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:26:29,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:26:29,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:26:29,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:26:29,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:26:29,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:26:29,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:26:29,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:26:29,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:26:29,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:26:29,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:26:29,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:26:29,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:26:29,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:26:29,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:26:29,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:26:29,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:26:29,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:26:29,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:26:29,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:26:29,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:26:29,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:26:29,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:26:29,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:26:29,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:26:29,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:26:29,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:26:29,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:26:29,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:26:29,907 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_18cbf30e-8ae1-42e8-93c0-f7043575b5a4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:26:29,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:26:29,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:26:29,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:26:29,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:26:29,964 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:26:29,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:26:29,965 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:26:29,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:26:29,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:26:29,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:26:29,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:26:29,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:26:29,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:26:29,968 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:26:29,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:26:29,969 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:26:29,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:26:29,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:26:29,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:26:29,970 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:26:29,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:26:29,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:26:29,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:26:29,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:26:29,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:26:29,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:26:29,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:26:29,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:26:29,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:26:29,973 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:/tmp/vcloud-vcloud-master/worker/run_dir_18cbf30e-8ae1-42e8-93c0-f7043575b5a4/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_18cbf30e-8ae1-42e8-93c0-f7043575b5a4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a71ed7b24cb625c47cfb1b6ba9f6cdbf2879f063 [2020-11-29 23:26:30,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:26:30,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:26:30,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:26:30,408 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:26:30,409 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:26:30,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_18cbf30e-8ae1-42e8-93c0-f7043575b5a4/bin/uautomizer/../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2020-11-29 23:26:30,497 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_18cbf30e-8ae1-42e8-93c0-f7043575b5a4/bin/uautomizer/data/d606cdf15/6049b87a7a1a41358425028b9fc77e80/FLAGb506cc88c [2020-11-29 23:26:31,166 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:26:31,167 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_18cbf30e-8ae1-42e8-93c0-f7043575b5a4/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2020-11-29 23:26:31,207 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_18cbf30e-8ae1-42e8-93c0-f7043575b5a4/bin/uautomizer/data/d606cdf15/6049b87a7a1a41358425028b9fc77e80/FLAGb506cc88c [2020-11-29 23:26:31,436 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_18cbf30e-8ae1-42e8-93c0-f7043575b5a4/bin/uautomizer/data/d606cdf15/6049b87a7a1a41358425028b9fc77e80 [2020-11-29 23:26:31,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:26:31,445 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:26:31,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:26:31,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:26:31,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:26:31,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:26:31" (1/1) ... [2020-11-29 23:26:31,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47370295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:26:31, skipping insertion in model container [2020-11-29 23:26:31,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:26:31" (1/1) ... [2020-11-29 23:26:31,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:26:31,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:26:32,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:26:32,080 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:26:32,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:26:32,240 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:26:32,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:26:32 WrapperNode [2020-11-29 23:26:32,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:26:32,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:26:32,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:26:32,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:26:32,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:26:32" (1/1) ... [2020-11-29 23:26:32,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:26:32" (1/1) ... [2020-11-29 23:26:32,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:26:32,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:26:32,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:26:32,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:26:32,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:26:32" (1/1) ... [2020-11-29 23:26:32,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:26:32" (1/1) ... [2020-11-29 23:26:32,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:26:32" (1/1) ... [2020-11-29 23:26:32,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:26:32" (1/1) ... [2020-11-29 23:26:32,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:26:32" (1/1) ... [2020-11-29 23:26:32,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:26:32" (1/1) ... [2020-11-29 23:26:32,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:26:32" (1/1) ... [2020-11-29 23:26:32,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:26:32,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:26:32,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:26:32,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:26:32,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:26:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18cbf30e-8ae1-42e8-93c0-f7043575b5a4/bin/uautomizer/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 [2020-11-29 23:26:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 23:26:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 23:26:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:26:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 23:26:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:26:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-29 23:26:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:26:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:26:32,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:26:33,689 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:26:33,689 INFO L298 CfgBuilder]: Removed 177 assume(true) statements. [2020-11-29 23:26:33,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:26:33 BoogieIcfgContainer [2020-11-29 23:26:33,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:26:33,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:26:33,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:26:33,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:26:33,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:26:31" (1/3) ... [2020-11-29 23:26:33,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7eb03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:26:33, skipping insertion in model container [2020-11-29 23:26:33,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:26:32" (2/3) ... [2020-11-29 23:26:33,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7eb03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:26:33, skipping insertion in model container [2020-11-29 23:26:33,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:26:33" (3/3) ... [2020-11-29 23:26:33,709 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2020-11-29 23:26:33,729 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:26:33,735 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2020-11-29 23:26:33,750 INFO L253 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2020-11-29 23:26:33,806 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:26:33,806 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:26:33,806 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:26:33,806 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:26:33,807 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:26:33,807 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:26:33,807 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:26:33,807 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:26:33,878 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-11-29 23:26:33,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 23:26:33,890 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:26:33,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:26:33,892 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]=== [2020-11-29 23:26:33,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:26:33,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1362234285, now seen corresponding path program 1 times [2020-11-29 23:26:33,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:26:33,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468668664] [2020-11-29 23:26:33,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:26:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:26:34,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:26:34,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468668664] [2020-11-29 23:26:34,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:26:34,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:26:34,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131995670] [2020-11-29 23:26:34,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:26:34,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:26:34,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:26:34,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:26:34,160 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 2 states. [2020-11-29 23:26:34,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:26:34,237 INFO L93 Difference]: Finished difference Result 392 states and 626 transitions. [2020-11-29 23:26:34,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:26:34,239 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-11-29 23:26:34,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:26:34,266 INFO L225 Difference]: With dead ends: 392 [2020-11-29 23:26:34,266 INFO L226 Difference]: Without dead ends: 181 [2020-11-29 23:26:34,279 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 [2020-11-29 23:26:34,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-11-29 23:26:34,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2020-11-29 23:26:34,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-11-29 23:26:34,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2020-11-29 23:26:34,345 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 15 [2020-11-29 23:26:34,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:26:34,345 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2020-11-29 23:26:34,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:26:34,346 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2020-11-29 23:26:34,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 23:26:34,347 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:26:34,347 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] [2020-11-29 23:26:34,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:26:34,348 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]=== [2020-11-29 23:26:34,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:26:34,349 INFO L82 PathProgramCache]: Analyzing trace with hash 719905366, now seen corresponding path program 1 times [2020-11-29 23:26:34,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:26:34,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170701793] [2020-11-29 23:26:34,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:26:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:26:34,923 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2020-11-29 23:26:35,167 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2020-11-29 23:26:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:26:35,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170701793] [2020-11-29 23:26:35,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:26:35,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-29 23:26:35,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846258226] [2020-11-29 23:26:35,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 23:26:35,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:26:35,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 23:26:35,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-11-29 23:26:35,523 INFO L87 Difference]: Start difference. First operand 181 states and 192 transitions. Second operand 13 states. [2020-11-29 23:26:36,194 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2020-11-29 23:26:36,355 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-11-29 23:26:36,600 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-11-29 23:26:36,789 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-11-29 23:26:37,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:26:37,602 INFO L93 Difference]: Finished difference Result 304 states and 322 transitions. [2020-11-29 23:26:37,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 23:26:37,603 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-11-29 23:26:37,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:26:37,607 INFO L225 Difference]: With dead ends: 304 [2020-11-29 23:26:37,608 INFO L226 Difference]: Without dead ends: 296 [2020-11-29 23:26:37,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-11-29 23:26:37,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-11-29 23:26:37,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 182. [2020-11-29 23:26:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-11-29 23:26:37,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 194 transitions. [2020-11-29 23:26:37,660 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 194 transitions. Word has length 26 [2020-11-29 23:26:37,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:26:37,660 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 194 transitions. [2020-11-29 23:26:37,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 23:26:37,660 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 194 transitions. [2020-11-29 23:26:37,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 23:26:37,662 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:26:37,662 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] [2020-11-29 23:26:37,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:26:37,662 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]=== [2020-11-29 23:26:37,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:26:37,668 INFO L82 PathProgramCache]: Analyzing trace with hash 755526682, now seen corresponding path program 1 times [2020-11-29 23:26:37,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:26:37,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284750480] [2020-11-29 23:26:37,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:26:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:26:38,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:26:38,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284750480] [2020-11-29 23:26:38,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:26:38,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-29 23:26:38,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485187019] [2020-11-29 23:26:38,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 23:26:38,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:26:38,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 23:26:38,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-11-29 23:26:38,149 INFO L87 Difference]: Start difference. First operand 182 states and 194 transitions. Second operand 13 states. [2020-11-29 23:26:39,051 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-11-29 23:26:39,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:26:39,589 INFO L93 Difference]: Finished difference Result 324 states and 345 transitions. [2020-11-29 23:26:39,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 23:26:39,590 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2020-11-29 23:26:39,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:26:39,594 INFO L225 Difference]: With dead ends: 324 [2020-11-29 23:26:39,594 INFO L226 Difference]: Without dead ends: 316 [2020-11-29 23:26:39,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-11-29 23:26:39,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-11-29 23:26:39,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 180. [2020-11-29 23:26:39,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-11-29 23:26:39,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 192 transitions. [2020-11-29 23:26:39,625 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 192 transitions. Word has length 28 [2020-11-29 23:26:39,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:26:39,626 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 192 transitions. [2020-11-29 23:26:39,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 23:26:39,626 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 192 transitions. [2020-11-29 23:26:39,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 23:26:39,627 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:26:39,628 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] [2020-11-29 23:26:39,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 23:26:39,628 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]=== [2020-11-29 23:26:39,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:26:39,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1978781254, now seen corresponding path program 1 times [2020-11-29 23:26:39,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:26:39,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077055836] [2020-11-29 23:26:39,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:26:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:26:39,785 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:26:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:26:39,884 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:26:39,949 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:26:39,950 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:26:39,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 23:26:40,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:26:40 BoogieIcfgContainer [2020-11-29 23:26:40,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:26:40,061 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:26:40,062 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:26:40,062 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:26:40,062 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:26:33" (3/4) ... [2020-11-29 23:26:40,065 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 23:26:40,182 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_18cbf30e-8ae1-42e8-93c0-f7043575b5a4/bin/uautomizer/witness.graphml [2020-11-29 23:26:40,183 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:26:40,184 INFO L168 Benchmark]: Toolchain (without parser) took 8738.69 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 86.1 MB in the beginning and 48.2 MB in the end (delta: 37.9 MB). Peak memory consumption was 62.3 MB. Max. memory is 16.1 GB. [2020-11-29 23:26:40,185 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 77.6 MB. Free memory was 35.5 MB in the beginning and 35.4 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:26:40,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 794.99 ms. Allocated memory is still 117.4 MB. Free memory was 85.8 MB in the beginning and 79.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:26:40,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.54 ms. Allocated memory is still 117.4 MB. Free memory was 79.9 MB in the beginning and 76.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:26:40,187 INFO L168 Benchmark]: Boogie Preprocessor took 76.25 ms. Allocated memory is still 117.4 MB. Free memory was 76.2 MB in the beginning and 73.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:26:40,187 INFO L168 Benchmark]: RCFGBuilder took 1274.55 ms. Allocated memory is still 117.4 MB. Free memory was 73.1 MB in the beginning and 51.7 MB in the end (delta: 21.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:26:40,188 INFO L168 Benchmark]: TraceAbstraction took 6360.75 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 51.0 MB in the beginning and 52.4 MB in the end (delta: -1.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:26:40,189 INFO L168 Benchmark]: Witness Printer took 121.29 ms. Allocated memory is still 142.6 MB. Free memory was 52.4 MB in the beginning and 48.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:26:40,192 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 77.6 MB. Free memory was 35.5 MB in the beginning and 35.4 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 794.99 ms. Allocated memory is still 117.4 MB. Free memory was 85.8 MB in the beginning and 79.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.54 ms. Allocated memory is still 117.4 MB. Free memory was 79.9 MB in the beginning and 76.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.25 ms. Allocated memory is still 117.4 MB. Free memory was 76.2 MB in the beginning and 73.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1274.55 ms. Allocated memory is still 117.4 MB. Free memory was 73.1 MB in the beginning and 51.7 MB in the end (delta: 21.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6360.75 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 51.0 MB in the beginning and 52.4 MB in the end (delta: -1.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. * Witness Printer took 121.29 ms. Allocated memory is still 142.6 MB. Free memory was 52.4 MB in the beginning and 48.2 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: 6.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 3.6s, 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, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.8s 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: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 250 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.3s 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...