./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-sorted-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_328e9d70-da97-43ec-9a92-66dadafab49d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_328e9d70-da97-43ec-9a92-66dadafab49d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_328e9d70-da97-43ec-9a92-66dadafab49d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_328e9d70-da97-43ec-9a92-66dadafab49d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_328e9d70-da97-43ec-9a92-66dadafab49d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_328e9d70-da97-43ec-9a92-66dadafab49d/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 635ef9d2e243ceee348a174080644f4e80f3ae61 ...................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-22 12:57:44,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:57:44,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:57:45,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:57:45,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:57:45,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:57:45,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:57:45,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:57:45,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:57:45,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:57:45,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:57:45,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:57:45,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:57:45,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:57:45,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:57:45,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:57:45,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:57:45,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:57:45,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:57:45,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:57:45,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:57:45,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:57:45,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:57:45,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:57:45,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:57:45,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:57:45,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:57:45,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:57:45,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:57:45,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:57:45,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:57:45,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:57:45,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:57:45,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:57:45,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:57:45,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:57:45,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:57:45,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:57:45,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:57:45,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:57:45,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:57:45,138 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_328e9d70-da97-43ec-9a92-66dadafab49d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:57:45,184 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:57:45,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:57:45,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:57:45,185 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:57:45,186 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:57:45,187 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:57:45,188 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:57:45,188 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:57:45,188 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:57:45,188 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:57:45,189 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:57:45,190 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:57:45,190 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:57:45,190 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:57:45,190 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:57:45,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:57:45,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:57:45,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:57:45,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:57:45,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:57:45,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:57:45,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:57:45,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:57:45,193 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:57:45,193 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:57:45,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:57:45,194 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:57:45,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:57:45,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:57:45,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:57:45,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:57:45,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:45,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:57:45,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:57:45,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:57:45,198 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:57:45,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:57:45,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:57:45,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:57:45,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:57:45,199 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_328e9d70-da97-43ec-9a92-66dadafab49d/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_328e9d70-da97-43ec-9a92-66dadafab49d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 635ef9d2e243ceee348a174080644f4e80f3ae61 [2020-11-22 12:57:45,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:57:45,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:57:45,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:57:45,496 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:57:45,497 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:57:45,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_328e9d70-da97-43ec-9a92-66dadafab49d/bin/utaipan/../../sv-benchmarks/c/forester-heap/dll-sorted-1.i [2020-11-22 12:57:45,586 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_328e9d70-da97-43ec-9a92-66dadafab49d/bin/utaipan/data/a3695f0d0/a3ef1caa837a4327b98e0101f04cf176/FLAG2d9bb86e4 [2020-11-22 12:57:46,081 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:57:46,082 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_328e9d70-da97-43ec-9a92-66dadafab49d/sv-benchmarks/c/forester-heap/dll-sorted-1.i [2020-11-22 12:57:46,095 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_328e9d70-da97-43ec-9a92-66dadafab49d/bin/utaipan/data/a3695f0d0/a3ef1caa837a4327b98e0101f04cf176/FLAG2d9bb86e4 [2020-11-22 12:57:46,385 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_328e9d70-da97-43ec-9a92-66dadafab49d/bin/utaipan/data/a3695f0d0/a3ef1caa837a4327b98e0101f04cf176 [2020-11-22 12:57:46,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:57:46,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:57:46,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:46,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:57:46,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:57:46,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:46,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ddd7b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46, skipping insertion in model container [2020-11-22 12:57:46,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:46,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:57:46,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:46,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:46,811 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:57:46,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:46,944 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:57:46,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46 WrapperNode [2020-11-22 12:57:46,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:46,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:46,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:57:46,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:57:46,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:46,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:47,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:47,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:57:47,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:57:47,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:57:47,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:47,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:47,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:47,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:47,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:47,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:47,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... [2020-11-22 12:57:47,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:57:47,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:57:47,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:57:47,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:57:47,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_328e9d70-da97-43ec-9a92-66dadafab49d/bin/utaipan/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 [2020-11-22 12:57:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 12:57:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:57:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-22 12:57:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-22 12:57:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:57:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-22 12:57:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:57:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:57:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:57:47,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:57:48,256 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:57:48,257 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-11-22 12:57:48,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:48 BoogieIcfgContainer [2020-11-22 12:57:48,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:57:48,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:57:48,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:57:48,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:57:48,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:57:46" (1/3) ... [2020-11-22 12:57:48,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40157ee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:48, skipping insertion in model container [2020-11-22 12:57:48,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:46" (2/3) ... [2020-11-22 12:57:48,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40157ee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:48, skipping insertion in model container [2020-11-22 12:57:48,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:48" (3/3) ... [2020-11-22 12:57:48,267 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2020-11-22 12:57:48,277 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:57:48,282 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-22 12:57:48,293 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-22 12:57:48,316 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:57:48,316 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:57:48,316 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:57:48,317 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:57:48,317 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:57:48,317 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:57:48,317 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:57:48,317 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:57:48,332 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-11-22 12:57:48,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 12:57:48,336 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:48,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 12:57:48,338 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:48,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:48,343 INFO L82 PathProgramCache]: Analyzing trace with hash 195465231, now seen corresponding path program 1 times [2020-11-22 12:57:48,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:48,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503084777] [2020-11-22 12:57:48,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:48,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:48,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503084777] [2020-11-22 12:57:48,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:48,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:48,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87291503] [2020-11-22 12:57:48,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:57:48,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:48,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:57:48,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:57:48,517 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2020-11-22 12:57:48,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:48,544 INFO L93 Difference]: Finished difference Result 103 states and 167 transitions. [2020-11-22 12:57:48,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:57:48,546 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-22 12:57:48,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:48,552 INFO L225 Difference]: With dead ends: 103 [2020-11-22 12:57:48,552 INFO L226 Difference]: Without dead ends: 48 [2020-11-22 12:57:48,555 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 [2020-11-22 12:57:48,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-22 12:57:48,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-11-22 12:57:48,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-22 12:57:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-11-22 12:57:48,590 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 6 [2020-11-22 12:57:48,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:48,591 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-11-22 12:57:48,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:57:48,591 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-11-22 12:57:48,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 12:57:48,591 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:48,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:48,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:57:48,592 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:48,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:48,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1203694076, now seen corresponding path program 1 times [2020-11-22 12:57:48,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:48,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666767688] [2020-11-22 12:57:48,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:48,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666767688] [2020-11-22 12:57:48,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:48,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:48,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529248412] [2020-11-22 12:57:48,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:48,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:48,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:48,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:48,674 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 3 states. [2020-11-22 12:57:48,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:48,739 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-11-22 12:57:48,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:48,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-22 12:57:48,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:48,741 INFO L225 Difference]: With dead ends: 96 [2020-11-22 12:57:48,742 INFO L226 Difference]: Without dead ends: 51 [2020-11-22 12:57:48,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:48,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-22 12:57:48,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-11-22 12:57:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-22 12:57:48,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-11-22 12:57:48,758 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 7 [2020-11-22 12:57:48,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:48,758 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-11-22 12:57:48,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:48,758 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-11-22 12:57:48,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:57:48,759 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:48,760 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:48,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:57:48,763 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:48,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:48,765 INFO L82 PathProgramCache]: Analyzing trace with hash -714480650, now seen corresponding path program 1 times [2020-11-22 12:57:48,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:48,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859614419] [2020-11-22 12:57:48,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:48,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-22 12:57:48,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859614419] [2020-11-22 12:57:48,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:48,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:57:48,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543895521] [2020-11-22 12:57:48,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:57:48,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:48,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:57:48,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:57:48,902 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 4 states. [2020-11-22 12:57:49,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:49,116 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2020-11-22 12:57:49,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:57:49,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-22 12:57:49,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:49,120 INFO L225 Difference]: With dead ends: 82 [2020-11-22 12:57:49,120 INFO L226 Difference]: Without dead ends: 79 [2020-11-22 12:57:49,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:57:49,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-22 12:57:49,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 47. [2020-11-22 12:57:49,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-22 12:57:49,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-11-22 12:57:49,133 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 9 [2020-11-22 12:57:49,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:49,134 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-11-22 12:57:49,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:57:49,134 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-11-22 12:57:49,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:57:49,135 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:49,135 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:49,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:57:49,136 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:49,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:49,138 INFO L82 PathProgramCache]: Analyzing trace with hash -673687519, now seen corresponding path program 1 times [2020-11-22 12:57:49,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:49,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365615161] [2020-11-22 12:57:49,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:57:49,236 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:57:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:57:49,300 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:57:49,339 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 12:57:49,339 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:57:49,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:57:49,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:57:49 BoogieIcfgContainer [2020-11-22 12:57:49,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:57:49,391 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:57:49,391 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:57:49,391 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:57:49,391 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:48" (3/4) ... [2020-11-22 12:57:49,393 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:57:49,459 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_328e9d70-da97-43ec-9a92-66dadafab49d/bin/utaipan/witness.graphml [2020-11-22 12:57:49,459 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:57:49,461 INFO L168 Benchmark]: Toolchain (without parser) took 3071.33 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 55.0 MB in the beginning and 71.4 MB in the end (delta: -16.4 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:49,461 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory is still 40.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:49,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 550.33 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 54.8 MB in the beginning and 79.0 MB in the end (delta: -24.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:49,462 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.68 ms. Allocated memory is still 113.2 MB. Free memory was 79.0 MB in the beginning and 76.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:49,463 INFO L168 Benchmark]: Boogie Preprocessor took 53.81 ms. Allocated memory is still 113.2 MB. Free memory was 76.1 MB in the beginning and 74.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:49,463 INFO L168 Benchmark]: RCFGBuilder took 1173.76 ms. Allocated memory is still 113.2 MB. Free memory was 74.0 MB in the beginning and 73.8 MB in the end (delta: 211.1 kB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:49,464 INFO L168 Benchmark]: TraceAbstraction took 1129.59 ms. Allocated memory is still 113.2 MB. Free memory was 73.8 MB in the beginning and 74.4 MB in the end (delta: -565.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:49,464 INFO L168 Benchmark]: Witness Printer took 68.78 ms. Allocated memory is still 113.2 MB. Free memory was 74.4 MB in the beginning and 71.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:49,471 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory is still 40.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 550.33 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 54.8 MB in the beginning and 79.0 MB in the end (delta: -24.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.68 ms. Allocated memory is still 113.2 MB. Free memory was 79.0 MB in the beginning and 76.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.81 ms. Allocated memory is still 113.2 MB. Free memory was 76.1 MB in the beginning and 74.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1173.76 ms. Allocated memory is still 113.2 MB. Free memory was 74.0 MB in the beginning and 73.8 MB in the end (delta: 211.1 kB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1129.59 ms. Allocated memory is still 113.2 MB. Free memory was 73.8 MB in the beginning and 74.4 MB in the end (delta: -565.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 68.78 ms. Allocated memory is still 113.2 MB. Free memory was 74.4 MB in the beginning and 71.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) [L999] head->prev = ((void*)0) [L1000] head->data = 0 [L1002] SLL* x = head; [L1003] int marked = 0; [L1006] COND TRUE __VERIFIER_nondet_int() || !marked [L1009] x->next = malloc(sizeof(SLL)) [L1010] EXPR x->next [L1010] x->next->prev = x [L1011] EXPR x->next [L1011] x = x->next [L1012] x->next = ((void*)0) [L1014] COND TRUE __VERIFIER_nondet_int() [L1016] marked = 1 [L1019] COND TRUE \read(marked) [L1020] x->data = 1 [L1006] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1025] x = head [L1027] COND FALSE !(!(((void*)0) != x)) [L1028] marked = 0 [L1030] EXPR x->next [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] EXPR x->next [L1030] EXPR x->next->data [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1035] EXPR x->next [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1035] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1037] EXPR x->next [L1037] x = x->next [L1038] EXPR x->data [L1038] COND TRUE !(x->data != 1) [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-sorted-1.c", 16, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 140 SDtfs, 125 SDslu, 53 SDs, 0 SdLazy, 35 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 33 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 293 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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...