./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c0639d00-e574-414a-bbb8-cab60c80d31d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c0639d00-e574-414a-bbb8-cab60c80d31d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c0639d00-e574-414a-bbb8-cab60c80d31d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c0639d00-e574-414a-bbb8-cab60c80d31d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c0639d00-e574-414a-bbb8-cab60c80d31d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c0639d00-e574-414a-bbb8-cab60c80d31d/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 65263b67fd81174d35f819c28bc33cb1f3e6621f ............................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.25-f470102 [2019-12-07 14:40:12,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:40:12,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:40:12,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:40:12,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:40:12,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:40:12,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:40:12,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:40:12,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:40:12,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:40:12,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:40:12,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:40:12,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:40:12,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:40:12,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:40:12,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:40:12,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:40:12,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:40:12,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:40:12,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:40:12,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:40:12,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:40:12,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:40:12,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:40:12,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:40:12,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:40:12,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:40:12,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:40:12,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:40:12,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:40:12,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:40:12,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:40:12,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:40:12,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:40:12,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:40:12,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:40:12,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:40:12,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:40:12,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:40:12,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:40:12,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:40:12,088 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c0639d00-e574-414a-bbb8-cab60c80d31d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 14:40:12,102 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:40:12,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:40:12,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 14:40:12,103 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 14:40:12,103 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 14:40:12,103 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 14:40:12,104 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 14:40:12,104 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 14:40:12,104 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 14:40:12,104 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 14:40:12,104 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 14:40:12,104 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 14:40:12,105 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 14:40:12,105 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 14:40:12,105 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 14:40:12,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:40:12,106 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:40:12,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:40:12,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:40:12,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:40:12,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:40:12,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:40:12,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:40:12,107 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 14:40:12,107 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:40:12,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:40:12,107 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:40:12,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:40:12,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:40:12,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:40:12,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:40:12,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:40:12,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:40:12,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:40:12,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:40:12,109 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 14:40:12,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:40:12,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:40:12,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:40:12,109 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 14:40:12,110 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_c0639d00-e574-414a-bbb8-cab60c80d31d/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(__VERIFIER_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 -> 65263b67fd81174d35f819c28bc33cb1f3e6621f [2019-12-07 14:40:12,224 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:40:12,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:40:12,237 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:40:12,238 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:40:12,239 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:40:12,239 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c0639d00-e574-414a-bbb8-cab60c80d31d/bin/utaipan/../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2019-12-07 14:40:12,277 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c0639d00-e574-414a-bbb8-cab60c80d31d/bin/utaipan/data/8d31ef5cf/859f2ff3b5234b52abd259071bbed0ed/FLAG09bb51e9a [2019-12-07 14:40:12,754 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:40:12,754 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c0639d00-e574-414a-bbb8-cab60c80d31d/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2019-12-07 14:40:12,764 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c0639d00-e574-414a-bbb8-cab60c80d31d/bin/utaipan/data/8d31ef5cf/859f2ff3b5234b52abd259071bbed0ed/FLAG09bb51e9a [2019-12-07 14:40:13,263 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c0639d00-e574-414a-bbb8-cab60c80d31d/bin/utaipan/data/8d31ef5cf/859f2ff3b5234b52abd259071bbed0ed [2019-12-07 14:40:13,265 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:40:13,266 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:40:13,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:40:13,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:40:13,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:40:13,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:40:13" (1/1) ... [2019-12-07 14:40:13,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27569ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:13, skipping insertion in model container [2019-12-07 14:40:13,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:40:13" (1/1) ... [2019-12-07 14:40:13,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:40:13,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:40:13,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:40:13,523 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:40:13,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:40:13,592 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:40:13,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:13 WrapperNode [2019-12-07 14:40:13,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:40:13,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:40:13,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:40:13,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:40:13,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:13" (1/1) ... [2019-12-07 14:40:13,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:13" (1/1) ... [2019-12-07 14:40:13,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:40:13,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:40:13,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:40:13,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:40:13,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:13" (1/1) ... [2019-12-07 14:40:13,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:13" (1/1) ... [2019-12-07 14:40:13,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:13" (1/1) ... [2019-12-07 14:40:13,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:13" (1/1) ... [2019-12-07 14:40:13,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:13" (1/1) ... [2019-12-07 14:40:13,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:13" (1/1) ... [2019-12-07 14:40:13,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:13" (1/1) ... [2019-12-07 14:40:13,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:40:13,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:40:13,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:40:13,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:40:13,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c0639d00-e574-414a-bbb8-cab60c80d31d/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 [2019-12-07 14:40:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 14:40:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 14:40:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-07 14:40:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 14:40:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 14:40:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-12-07 14:40:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:40:13,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:40:14,249 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:40:14,249 INFO L287 CfgBuilder]: Removed 137 assume(true) statements. [2019-12-07 14:40:14,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:40:14 BoogieIcfgContainer [2019-12-07 14:40:14,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:40:14,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:40:14,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:40:14,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:40:14,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:40:13" (1/3) ... [2019-12-07 14:40:14,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732e1f0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:40:14, skipping insertion in model container [2019-12-07 14:40:14,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:40:13" (2/3) ... [2019-12-07 14:40:14,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732e1f0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:40:14, skipping insertion in model container [2019-12-07 14:40:14,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:40:14" (3/3) ... [2019-12-07 14:40:14,256 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2019-12-07 14:40:14,263 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:40:14,268 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2019-12-07 14:40:14,276 INFO L249 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2019-12-07 14:40:14,294 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:40:14,294 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:40:14,294 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:40:14,295 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:40:14,295 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:40:14,295 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:40:14,295 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:40:14,295 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:40:14,310 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states. [2019-12-07 14:40:14,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 14:40:14,314 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:40:14,315 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:40:14,315 INFO L410 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]=== [2019-12-07 14:40:14,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:40:14,320 INFO L82 PathProgramCache]: Analyzing trace with hash 523617926, now seen corresponding path program 1 times [2019-12-07 14:40:14,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:40:14,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575938695] [2019-12-07 14:40:14,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:40:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:40:14,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:40:14,422 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575938695] [2019-12-07 14:40:14,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:40:14,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:40:14,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938088181] [2019-12-07 14:40:14,428 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 14:40:14,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:40:14,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 14:40:14,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 14:40:14,439 INFO L87 Difference]: Start difference. First operand 121 states. Second operand 2 states. [2019-12-07 14:40:14,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:40:14,464 INFO L93 Difference]: Finished difference Result 239 states and 397 transitions. [2019-12-07 14:40:14,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 14:40:14,466 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 14:40:14,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:40:14,474 INFO L225 Difference]: With dead ends: 239 [2019-12-07 14:40:14,474 INFO L226 Difference]: Without dead ends: 119 [2019-12-07 14:40:14,477 INFO L630 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 [2019-12-07 14:40:14,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-12-07 14:40:14,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2019-12-07 14:40:14,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-12-07 14:40:14,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 130 transitions. [2019-12-07 14:40:14,510 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 130 transitions. Word has length 10 [2019-12-07 14:40:14,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:40:14,511 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 130 transitions. [2019-12-07 14:40:14,511 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 14:40:14,511 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 130 transitions. [2019-12-07 14:40:14,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 14:40:14,511 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:40:14,512 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:40:14,512 INFO L410 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]=== [2019-12-07 14:40:14,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:40:14,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1240835003, now seen corresponding path program 1 times [2019-12-07 14:40:14,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:40:14,513 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011379591] [2019-12-07 14:40:14,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:40:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:40:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:40:14,732 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011379591] [2019-12-07 14:40:14,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:40:14,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 14:40:14,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895513064] [2019-12-07 14:40:14,733 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 14:40:14,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:40:14,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 14:40:14,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-12-07 14:40:14,734 INFO L87 Difference]: Start difference. First operand 119 states and 130 transitions. Second operand 7 states. [2019-12-07 14:40:15,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:40:15,017 INFO L93 Difference]: Finished difference Result 202 states and 220 transitions. [2019-12-07 14:40:15,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 14:40:15,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-12-07 14:40:15,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:40:15,019 INFO L225 Difference]: With dead ends: 202 [2019-12-07 14:40:15,019 INFO L226 Difference]: Without dead ends: 198 [2019-12-07 14:40:15,020 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-12-07 14:40:15,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2019-12-07 14:40:15,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 121. [2019-12-07 14:40:15,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-12-07 14:40:15,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 133 transitions. [2019-12-07 14:40:15,032 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 133 transitions. Word has length 13 [2019-12-07 14:40:15,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:40:15,032 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 133 transitions. [2019-12-07 14:40:15,032 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 14:40:15,032 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 133 transitions. [2019-12-07 14:40:15,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 14:40:15,033 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:40:15,033 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:40:15,033 INFO L410 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]=== [2019-12-07 14:40:15,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:40:15,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1558280289, now seen corresponding path program 1 times [2019-12-07 14:40:15,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:40:15,034 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841802812] [2019-12-07 14:40:15,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:40:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:40:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:40:15,173 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841802812] [2019-12-07 14:40:15,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:40:15,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 14:40:15,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197049860] [2019-12-07 14:40:15,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 14:40:15,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:40:15,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 14:40:15,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-12-07 14:40:15,175 INFO L87 Difference]: Start difference. First operand 121 states and 133 transitions. Second operand 8 states. [2019-12-07 14:40:15,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:40:15,387 INFO L93 Difference]: Finished difference Result 215 states and 235 transitions. [2019-12-07 14:40:15,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 14:40:15,387 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-12-07 14:40:15,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:40:15,389 INFO L225 Difference]: With dead ends: 215 [2019-12-07 14:40:15,389 INFO L226 Difference]: Without dead ends: 211 [2019-12-07 14:40:15,389 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-12-07 14:40:15,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2019-12-07 14:40:15,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 121. [2019-12-07 14:40:15,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-12-07 14:40:15,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 133 transitions. [2019-12-07 14:40:15,400 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 133 transitions. Word has length 15 [2019-12-07 14:40:15,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:40:15,400 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 133 transitions. [2019-12-07 14:40:15,401 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 14:40:15,401 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 133 transitions. [2019-12-07 14:40:15,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 14:40:15,401 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:40:15,402 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:40:15,402 INFO L410 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]=== [2019-12-07 14:40:15,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:40:15,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1714331691, now seen corresponding path program 1 times [2019-12-07 14:40:15,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:40:15,403 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367025600] [2019-12-07 14:40:15,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:40:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:40:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:40:15,504 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 14:40:15,504 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 14:40:15,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:40:15 BoogieIcfgContainer [2019-12-07 14:40:15,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:40:15,544 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:40:15,544 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:40:15,545 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:40:15,545 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:40:14" (3/4) ... [2019-12-07 14:40:15,547 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 14:40:15,593 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c0639d00-e574-414a-bbb8-cab60c80d31d/bin/utaipan/witness.graphml [2019-12-07 14:40:15,594 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:40:15,596 INFO L168 Benchmark]: Toolchain (without parser) took 2329.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 934.0 MB in the beginning and 842.9 MB in the end (delta: 91.1 MB). Peak memory consumption was 244.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:40:15,596 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:40:15,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-12-07 14:40:15,597 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:40:15,597 INFO L168 Benchmark]: Boogie Preprocessor took 35.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:40:15,598 INFO L168 Benchmark]: RCFGBuilder took 582.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 89.6 MB). Peak memory consumption was 89.6 MB. Max. memory is 11.5 GB. [2019-12-07 14:40:15,598 INFO L168 Benchmark]: TraceAbstraction took 1292.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 848.4 MB in the end (delta: 180.2 MB). Peak memory consumption was 180.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:40:15,599 INFO L168 Benchmark]: Witness Printer took 49.59 ms. Allocated memory is still 1.2 GB. Free memory was 848.4 MB in the beginning and 842.9 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 11.5 GB. [2019-12-07 14:40:15,601 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 326.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 582.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 89.6 MB). Peak memory consumption was 89.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1292.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 848.4 MB in the end (delta: 180.2 MB). Peak memory consumption was 180.2 MB. Max. memory is 11.5 GB. * Witness Printer took 49.59 ms. Allocated memory is still 1.2 GB. Free memory was 848.4 MB in the beginning and 842.9 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L628] const struct node *p1, *p2; [L577] struct node *list = ((void *)0); [L562] struct node *ptr = malloc(sizeof *ptr); [L563] COND FALSE !(!ptr) [L565] ptr->next = ((void *)0) [L566] ptr->prev = ((void *)0) [L567] return ptr; [L571] struct node *node = alloc_node(); [L572] EXPR \read(**ppnode) [L572] node->next = *ppnode [L573] *ppnode = node [L580] COND FALSE !(__VERIFIER_nondet_int()) [L581] EXPR \read(*list) [L581] *pp2 = list [L582] COND FALSE !(__VERIFIER_nondet_int()) [L584] EXPR \read(*list) [L584] *pp1 = list [L562] struct node *ptr = malloc(sizeof *ptr); [L563] COND FALSE !(!ptr) [L565] ptr->next = ((void *)0) [L566] ptr->prev = ((void *)0) [L567] return ptr; [L571] struct node *node = alloc_node(); [L572] EXPR \read(**ppnode) [L572] node->next = *ppnode [L573] *ppnode = node [L587] COND FALSE !(__VERIFIER_nondet_int()) [L588] EXPR \read(*list) [L588] return list; [L577] struct node *list = ((void *)0); [L588] return list; [L629] struct node *list = create_sll(&p1, &p2); [L631] \read(*p1) [L631] \read(*p2) [L615] COND FALSE !(!(beg)) [L616] COND FALSE !(!(end)) [L617] EXPR beg->next [L617] beg = beg->next [L617] COND TRUE end != beg [L618] COND TRUE !(beg) [L554] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 121 locations, 20 error locations. Result: UNSAFE, OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 320 SDtfs, 343 SDslu, 827 SDs, 0 SdLazy, 367 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred 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, 167 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 6511 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...