./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_f9713664-d8ea-452d-ac65-61ff95b6df90/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f9713664-d8ea-452d-ac65-61ff95b6df90/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f9713664-d8ea-452d-ac65-61ff95b6df90/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f9713664-d8ea-452d-ac65-61ff95b6df90/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_f9713664-d8ea-452d-ac65-61ff95b6df90/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f9713664-d8ea-452d-ac65-61ff95b6df90/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 [2020-11-28 03:13:02,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:13:02,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:13:02,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:13:02,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:13:02,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:13:02,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:13:02,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:13:02,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:13:02,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:13:02,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:13:02,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:13:02,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:13:02,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:13:02,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:13:02,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:13:02,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:13:02,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:13:02,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:13:02,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:13:02,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:13:02,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:13:02,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:13:02,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:13:02,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:13:02,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:13:02,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:13:02,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:13:02,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:13:02,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:13:02,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:13:02,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:13:02,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:13:02,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:13:02,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:13:02,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:13:02,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:13:02,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:13:02,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:13:02,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:13:02,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:13:02,871 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f9713664-d8ea-452d-ac65-61ff95b6df90/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:13:02,894 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:13:02,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:13:02,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:13:02,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:13:02,896 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:13:02,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:13:02,896 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:13:02,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:13:02,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:13:02,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:13:02,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:13:02,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:13:02,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:13:02,898 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:13:02,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:13:02,898 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:13:02,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:13:02,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:13:02,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:13:02,899 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:13:02,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:13:02,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:13:02,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:13:02,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:13:02,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:13:02,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:13:02,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:13:02,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:13:02,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:13:02,902 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_f9713664-d8ea-452d-ac65-61ff95b6df90/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f9713664-d8ea-452d-ac65-61ff95b6df90/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a71ed7b24cb625c47cfb1b6ba9f6cdbf2879f063 [2020-11-28 03:13:03,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:13:03,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:13:03,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:13:03,278 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:13:03,280 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:13:03,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f9713664-d8ea-452d-ac65-61ff95b6df90/bin/uautomizer/../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2020-11-28 03:13:03,369 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f9713664-d8ea-452d-ac65-61ff95b6df90/bin/uautomizer/data/dbaff2ae4/eeb7b8db3867459fa28072969cfa29d4/FLAGca29a8546 [2020-11-28 03:13:04,063 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:13:04,063 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f9713664-d8ea-452d-ac65-61ff95b6df90/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2020-11-28 03:13:04,077 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f9713664-d8ea-452d-ac65-61ff95b6df90/bin/uautomizer/data/dbaff2ae4/eeb7b8db3867459fa28072969cfa29d4/FLAGca29a8546 [2020-11-28 03:13:04,316 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f9713664-d8ea-452d-ac65-61ff95b6df90/bin/uautomizer/data/dbaff2ae4/eeb7b8db3867459fa28072969cfa29d4 [2020-11-28 03:13:04,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:13:04,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:13:04,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:04,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:13:04,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:13:04,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:04" (1/1) ... [2020-11-28 03:13:04,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@215ff22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:04, skipping insertion in model container [2020-11-28 03:13:04,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:04" (1/1) ... [2020-11-28 03:13:04,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:13:04,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:13:04,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:04,764 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:13:04,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:04,876 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:13:04,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:04 WrapperNode [2020-11-28 03:13:04,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:04,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:04,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:13:04,879 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:13:04,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:04" (1/1) ... [2020-11-28 03:13:04,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:04" (1/1) ... [2020-11-28 03:13:04,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:04,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:13:04,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:13:04,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:13:04,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:04" (1/1) ... [2020-11-28 03:13:04,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:04" (1/1) ... [2020-11-28 03:13:04,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:04" (1/1) ... [2020-11-28 03:13:04,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:04" (1/1) ... [2020-11-28 03:13:04,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:04" (1/1) ... [2020-11-28 03:13:05,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:04" (1/1) ... [2020-11-28 03:13:05,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:04" (1/1) ... [2020-11-28 03:13:05,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:13:05,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:13:05,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:13:05,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:13:05,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9713664-d8ea-452d-ac65-61ff95b6df90/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 [2020-11-28 03:13:05,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 03:13:05,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 03:13:05,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:13:05,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 03:13:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:13:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-28 03:13:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:13:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:13:05,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:13:06,123 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:13:06,123 INFO L298 CfgBuilder]: Removed 177 assume(true) statements. [2020-11-28 03:13:06,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:06 BoogieIcfgContainer [2020-11-28 03:13:06,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:13:06,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:13:06,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:13:06,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:13:06,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:13:04" (1/3) ... [2020-11-28 03:13:06,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48152958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:06, skipping insertion in model container [2020-11-28 03:13:06,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:04" (2/3) ... [2020-11-28 03:13:06,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48152958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:06, skipping insertion in model container [2020-11-28 03:13:06,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:06" (3/3) ... [2020-11-28 03:13:06,139 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2020-11-28 03:13:06,147 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:13:06,151 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2020-11-28 03:13:06,164 INFO L253 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2020-11-28 03:13:06,197 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:13:06,198 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:13:06,198 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:13:06,198 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:13:06,198 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:13:06,199 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:13:06,199 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:13:06,199 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:13:06,226 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-11-28 03:13:06,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:13:06,234 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:06,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:06,236 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]=== [2020-11-28 03:13:06,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:06,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1362234285, now seen corresponding path program 1 times [2020-11-28 03:13:06,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:06,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102419171] [2020-11-28 03:13:06,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:06,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102419171] [2020-11-28 03:13:06,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:06,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:13:06,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570402960] [2020-11-28 03:13:06,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:13:06,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:06,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:13:06,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:13:06,489 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 2 states. [2020-11-28 03:13:06,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:06,551 INFO L93 Difference]: Finished difference Result 392 states and 626 transitions. [2020-11-28 03:13:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:13:06,552 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-11-28 03:13:06,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:06,564 INFO L225 Difference]: With dead ends: 392 [2020-11-28 03:13:06,564 INFO L226 Difference]: Without dead ends: 181 [2020-11-28 03:13:06,568 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 [2020-11-28 03:13:06,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-11-28 03:13:06,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2020-11-28 03:13:06,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-11-28 03:13:06,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2020-11-28 03:13:06,642 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 15 [2020-11-28 03:13:06,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:06,642 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2020-11-28 03:13:06,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:13:06,643 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2020-11-28 03:13:06,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 03:13:06,644 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:06,644 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] [2020-11-28 03:13:06,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:13:06,645 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]=== [2020-11-28 03:13:06,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:06,649 INFO L82 PathProgramCache]: Analyzing trace with hash 719905366, now seen corresponding path program 1 times [2020-11-28 03:13:06,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:06,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763389416] [2020-11-28 03:13:06,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:07,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763389416] [2020-11-28 03:13:07,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:07,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-28 03:13:07,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924852617] [2020-11-28 03:13:07,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:13:07,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:07,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:13:07,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:13:07,535 INFO L87 Difference]: Start difference. First operand 181 states and 192 transitions. Second operand 13 states. [2020-11-28 03:13:08,230 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-11-28 03:13:08,436 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-11-28 03:13:08,614 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-11-28 03:13:09,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:09,271 INFO L93 Difference]: Finished difference Result 304 states and 322 transitions. [2020-11-28 03:13:09,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 03:13:09,272 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-11-28 03:13:09,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:09,275 INFO L225 Difference]: With dead ends: 304 [2020-11-28 03:13:09,275 INFO L226 Difference]: Without dead ends: 296 [2020-11-28 03:13:09,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-11-28 03:13:09,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-11-28 03:13:09,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 182. [2020-11-28 03:13:09,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-11-28 03:13:09,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 194 transitions. [2020-11-28 03:13:09,295 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 194 transitions. Word has length 26 [2020-11-28 03:13:09,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:09,296 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 194 transitions. [2020-11-28 03:13:09,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:13:09,296 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 194 transitions. [2020-11-28 03:13:09,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 03:13:09,297 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:09,297 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] [2020-11-28 03:13:09,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:13:09,298 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]=== [2020-11-28 03:13:09,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:09,299 INFO L82 PathProgramCache]: Analyzing trace with hash 755526682, now seen corresponding path program 1 times [2020-11-28 03:13:09,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:09,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262443534] [2020-11-28 03:13:09,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:09,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262443534] [2020-11-28 03:13:09,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:09,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-28 03:13:09,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351769931] [2020-11-28 03:13:09,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:13:09,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:09,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:13:09,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:13:09,650 INFO L87 Difference]: Start difference. First operand 182 states and 194 transitions. Second operand 13 states. [2020-11-28 03:13:10,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:10,670 INFO L93 Difference]: Finished difference Result 324 states and 345 transitions. [2020-11-28 03:13:10,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 03:13:10,670 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2020-11-28 03:13:10,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:10,673 INFO L225 Difference]: With dead ends: 324 [2020-11-28 03:13:10,674 INFO L226 Difference]: Without dead ends: 316 [2020-11-28 03:13:10,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-11-28 03:13:10,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-11-28 03:13:10,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 180. [2020-11-28 03:13:10,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-11-28 03:13:10,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 192 transitions. [2020-11-28 03:13:10,716 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 192 transitions. Word has length 28 [2020-11-28 03:13:10,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:10,717 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 192 transitions. [2020-11-28 03:13:10,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:13:10,717 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 192 transitions. [2020-11-28 03:13:10,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 03:13:10,719 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:10,719 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] [2020-11-28 03:13:10,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:13:10,720 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]=== [2020-11-28 03:13:10,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:10,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1978781254, now seen corresponding path program 1 times [2020-11-28 03:13:10,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:10,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541249769] [2020-11-28 03:13:10,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:10,836 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:10,909 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:10,959 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:10,959 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:13:10,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:13:11,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:13:11 BoogieIcfgContainer [2020-11-28 03:13:11,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:13:11,032 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:13:11,032 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:13:11,032 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:13:11,033 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:06" (3/4) ... [2020-11-28 03:13:11,035 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:13:11,101 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f9713664-d8ea-452d-ac65-61ff95b6df90/bin/uautomizer/witness.graphml [2020-11-28 03:13:11,101 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:13:11,103 INFO L168 Benchmark]: Toolchain (without parser) took 6782.93 ms. Allocated memory was 90.2 MB in the beginning and 157.3 MB in the end (delta: 67.1 MB). Free memory was 59.3 MB in the beginning and 63.3 MB in the end (delta: -4.0 MB). Peak memory consumption was 62.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:11,104 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 90.2 MB. Free memory was 49.7 MB in the beginning and 49.7 MB in the end (delta: 40.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:11,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 556.30 ms. Allocated memory was 90.2 MB in the beginning and 130.0 MB in the end (delta: 39.8 MB). Free memory was 59.1 MB in the beginning and 92.1 MB in the end (delta: -33.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:11,105 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.38 ms. Allocated memory is still 130.0 MB. Free memory was 92.1 MB in the beginning and 88.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:11,106 INFO L168 Benchmark]: Boogie Preprocessor took 104.32 ms. Allocated memory is still 130.0 MB. Free memory was 88.8 MB in the beginning and 85.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:11,107 INFO L168 Benchmark]: RCFGBuilder took 1078.71 ms. Allocated memory is still 130.0 MB. Free memory was 85.8 MB in the beginning and 90.4 MB in the end (delta: -4.7 MB). Peak memory consumption was 54.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:11,107 INFO L168 Benchmark]: TraceAbstraction took 4899.11 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 90.4 MB in the beginning and 68.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:11,108 INFO L168 Benchmark]: Witness Printer took 69.95 ms. Allocated memory is still 157.3 MB. Free memory was 68.5 MB in the beginning and 63.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:11,112 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 90.2 MB. Free memory was 49.7 MB in the beginning and 49.7 MB in the end (delta: 40.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 556.30 ms. Allocated memory was 90.2 MB in the beginning and 130.0 MB in the end (delta: 39.8 MB). Free memory was 59.1 MB in the beginning and 92.1 MB in the end (delta: -33.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.38 ms. Allocated memory is still 130.0 MB. Free memory was 92.1 MB in the beginning and 88.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 104.32 ms. Allocated memory is still 130.0 MB. Free memory was 88.8 MB in the beginning and 85.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1078.71 ms. Allocated memory is still 130.0 MB. Free memory was 85.8 MB in the beginning and 90.4 MB in the end (delta: -4.7 MB). Peak memory consumption was 54.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4899.11 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 90.4 MB in the beginning and 68.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 16.1 GB. * Witness Printer took 69.95 ms. Allocated memory is still 157.3 MB. Free memory was 68.5 MB in the beginning and 63.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 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: 4.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 2.8s, 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, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.2s 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, 0.3s SatisfiabilityAnalysisTime, 1.0s 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...