./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/rule60_list2_true-termination.c_false-unreach-call_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/rule60_list2_true-termination.c_false-unreach-call_1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f18f7f1f917468e24f0e5d26966f1156107884dd ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.23-5842f4b [2018-11-18 10:23:09,353 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:23:09,354 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:23:09,363 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:23:09,363 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:23:09,364 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:23:09,365 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:23:09,366 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:23:09,367 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:23:09,367 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:23:09,368 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:23:09,368 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:23:09,369 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:23:09,370 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:23:09,370 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:23:09,371 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:23:09,371 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:23:09,373 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:23:09,374 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:23:09,375 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:23:09,376 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:23:09,376 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:23:09,378 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:23:09,378 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:23:09,378 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:23:09,379 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:23:09,380 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:23:09,380 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:23:09,381 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:23:09,382 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:23:09,382 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:23:09,382 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:23:09,382 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:23:09,382 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:23:09,383 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:23:09,384 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:23:09,384 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 10:23:09,392 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:23:09,392 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:23:09,392 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:23:09,392 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 10:23:09,393 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 10:23:09,393 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 10:23:09,393 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 10:23:09,393 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:23:09,394 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:23:09,394 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:23:09,394 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:23:09,394 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:23:09,394 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:23:09,394 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:23:09,394 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:23:09,395 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:23:09,395 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:23:09,395 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:23:09,395 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:23:09,395 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:23:09,395 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:23:09,396 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:23:09,396 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:23:09,396 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:23:09,396 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:23:09,396 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:23:09,396 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:23:09,397 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 10:23:09,397 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:23:09,397 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 10:23:09,397 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f18f7f1f917468e24f0e5d26966f1156107884dd [2018-11-18 10:23:09,419 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:23:09,427 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:23:09,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:23:09,430 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:23:09,430 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:23:09,431 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/rule60_list2_true-termination.c_false-unreach-call_1.i [2018-11-18 10:23:09,472 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer/data/62a8c3d12/b6e2dda13c34495f94b02ac918f8f0f2/FLAGdca666384 [2018-11-18 10:23:09,891 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:23:09,892 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/sv-benchmarks/c/ldv-regression/rule60_list2_true-termination.c_false-unreach-call_1.i [2018-11-18 10:23:09,897 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer/data/62a8c3d12/b6e2dda13c34495f94b02ac918f8f0f2/FLAGdca666384 [2018-11-18 10:23:09,908 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer/data/62a8c3d12/b6e2dda13c34495f94b02ac918f8f0f2 [2018-11-18 10:23:09,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:23:09,911 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 10:23:09,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:23:09,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:23:09,914 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:23:09,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:23:09" (1/1) ... [2018-11-18 10:23:09,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a3365a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:09, skipping insertion in model container [2018-11-18 10:23:09,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:23:09" (1/1) ... [2018-11-18 10:23:09,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:23:09,949 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:23:10,132 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:23:10,136 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:23:10,165 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:23:10,247 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:23:10,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:10 WrapperNode [2018-11-18 10:23:10,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:23:10,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:23:10,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:23:10,249 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:23:10,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:10" (1/1) ... [2018-11-18 10:23:10,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:10" (1/1) ... [2018-11-18 10:23:10,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:10" (1/1) ... [2018-11-18 10:23:10,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:10" (1/1) ... [2018-11-18 10:23:10,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:10" (1/1) ... [2018-11-18 10:23:10,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:10" (1/1) ... [2018-11-18 10:23:10,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:10" (1/1) ... [2018-11-18 10:23:10,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:23:10,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:23:10,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:23:10,288 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:23:10,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:23:10,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:23:10,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:23:10,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2018-11-18 10:23:10,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2018-11-18 10:23:10,331 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2018-11-18 10:23:10,331 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2018-11-18 10:23:10,331 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2018-11-18 10:23:10,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:23:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 10:23:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2018-11-18 10:23:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2018-11-18 10:23:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2018-11-18 10:23:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2018-11-18 10:23:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2018-11-18 10:23:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2018-11-18 10:23:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2018-11-18 10:23:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2018-11-18 10:23:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2018-11-18 10:23:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2018-11-18 10:23:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2018-11-18 10:23:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2018-11-18 10:23:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2018-11-18 10:23:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2018-11-18 10:23:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2018-11-18 10:23:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2018-11-18 10:23:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2018-11-18 10:23:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2018-11-18 10:23:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2018-11-18 10:23:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2018-11-18 10:23:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2018-11-18 10:23:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2018-11-18 10:23:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2018-11-18 10:23:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2018-11-18 10:23:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2018-11-18 10:23:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2018-11-18 10:23:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2018-11-18 10:23:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2018-11-18 10:23:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2018-11-18 10:23:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2018-11-18 10:23:10,334 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2018-11-18 10:23:10,335 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2018-11-18 10:23:10,335 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2018-11-18 10:23:10,335 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2018-11-18 10:23:10,335 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2018-11-18 10:23:10,335 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2018-11-18 10:23:10,335 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2018-11-18 10:23:10,335 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2018-11-18 10:23:10,335 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2018-11-18 10:23:10,336 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2018-11-18 10:23:10,336 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2018-11-18 10:23:10,336 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2018-11-18 10:23:10,336 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2018-11-18 10:23:10,336 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2018-11-18 10:23:10,336 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2018-11-18 10:23:10,336 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2018-11-18 10:23:10,336 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2018-11-18 10:23:10,336 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2018-11-18 10:23:10,337 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2018-11-18 10:23:10,337 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2018-11-18 10:23:10,337 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2018-11-18 10:23:10,337 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2018-11-18 10:23:10,337 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2018-11-18 10:23:10,337 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2018-11-18 10:23:10,337 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2018-11-18 10:23:10,337 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2018-11-18 10:23:10,337 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2018-11-18 10:23:10,337 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2018-11-18 10:23:10,337 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2018-11-18 10:23:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2018-11-18 10:23:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2018-11-18 10:23:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2018-11-18 10:23:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2018-11-18 10:23:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2018-11-18 10:23:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2018-11-18 10:23:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2018-11-18 10:23:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2018-11-18 10:23:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2018-11-18 10:23:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2018-11-18 10:23:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2018-11-18 10:23:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2018-11-18 10:23:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2018-11-18 10:23:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2018-11-18 10:23:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2018-11-18 10:23:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2018-11-18 10:23:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2018-11-18 10:23:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2018-11-18 10:23:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2018-11-18 10:23:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2018-11-18 10:23:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2018-11-18 10:23:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2018-11-18 10:23:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2018-11-18 10:23:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2018-11-18 10:23:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2018-11-18 10:23:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2018-11-18 10:23:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2018-11-18 10:23:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2018-11-18 10:23:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2018-11-18 10:23:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2018-11-18 10:23:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2018-11-18 10:23:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2018-11-18 10:23:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2018-11-18 10:23:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2018-11-18 10:23:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2018-11-18 10:23:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2018-11-18 10:23:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2018-11-18 10:23:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2018-11-18 10:23:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2018-11-18 10:23:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2018-11-18 10:23:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2018-11-18 10:23:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2018-11-18 10:23:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2018-11-18 10:23:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-18 10:23:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-18 10:23:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-18 10:23:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-18 10:23:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-18 10:23:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2018-11-18 10:23:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-18 10:23:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2018-11-18 10:23:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2018-11-18 10:23:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2018-11-18 10:23:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2018-11-18 10:23:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2018-11-18 10:23:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2018-11-18 10:23:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2018-11-18 10:23:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2018-11-18 10:23:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2018-11-18 10:23:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2018-11-18 10:23:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2018-11-18 10:23:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 10:23:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2018-11-18 10:23:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2018-11-18 10:23:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2018-11-18 10:23:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2018-11-18 10:23:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:23:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:23:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 10:23:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 10:23:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:23:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 10:23:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 10:23:10,697 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:23:10,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:23:10 BoogieIcfgContainer [2018-11-18 10:23:10,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:23:10,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:23:10,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:23:10,701 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:23:10,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:23:09" (1/3) ... [2018-11-18 10:23:10,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6aac95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:23:10, skipping insertion in model container [2018-11-18 10:23:10,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:23:10" (2/3) ... [2018-11-18 10:23:10,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6aac95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:23:10, skipping insertion in model container [2018-11-18 10:23:10,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:23:10" (3/3) ... [2018-11-18 10:23:10,704 INFO L112 eAbstractionObserver]: Analyzing ICFG rule60_list2_true-termination.c_false-unreach-call_1.i [2018-11-18 10:23:10,712 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:23:10,718 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 10:23:10,728 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 10:23:10,747 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 10:23:10,748 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:23:10,748 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:23:10,748 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:23:10,748 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:23:10,748 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:23:10,748 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:23:10,748 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:23:10,748 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:23:10,761 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-11-18 10:23:10,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 10:23:10,766 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:23:10,766 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:23:10,768 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:23:10,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:23:10,773 INFO L82 PathProgramCache]: Analyzing trace with hash -573637036, now seen corresponding path program 1 times [2018-11-18 10:23:10,774 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:23:10,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:23:10,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:23:10,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:23:10,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:23:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:23:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:23:10,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:23:10,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 10:23:10,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 10:23:10,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 10:23:10,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 10:23:10,946 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 6 states. [2018-11-18 10:23:11,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:23:11,007 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2018-11-18 10:23:11,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 10:23:11,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-11-18 10:23:11,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:23:11,014 INFO L225 Difference]: With dead ends: 86 [2018-11-18 10:23:11,014 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 10:23:11,016 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-18 10:23:11,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 10:23:11,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-18 10:23:11,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 10:23:11,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-11-18 10:23:11,041 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 13 [2018-11-18 10:23:11,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:23:11,041 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-11-18 10:23:11,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 10:23:11,041 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-11-18 10:23:11,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-18 10:23:11,043 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:23:11,043 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:23:11,043 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:23:11,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:23:11,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1917870949, now seen corresponding path program 1 times [2018-11-18 10:23:11,043 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:23:11,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:23:11,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:23:11,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:23:11,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:23:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:23:11,170 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 10:23:11,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:23:11,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 10:23:11,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 10:23:11,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 10:23:11,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 10:23:11,172 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2018-11-18 10:23:11,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:23:11,193 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2018-11-18 10:23:11,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 10:23:11,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-11-18 10:23:11,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:23:11,195 INFO L225 Difference]: With dead ends: 65 [2018-11-18 10:23:11,195 INFO L226 Difference]: Without dead ends: 45 [2018-11-18 10:23:11,196 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 10:23:11,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-18 10:23:11,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-18 10:23:11,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 10:23:11,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2018-11-18 10:23:11,204 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 38 [2018-11-18 10:23:11,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:23:11,204 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2018-11-18 10:23:11,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 10:23:11,204 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2018-11-18 10:23:11,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-18 10:23:11,205 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:23:11,205 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:23:11,205 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:23:11,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:23:11,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1624467942, now seen corresponding path program 1 times [2018-11-18 10:23:11,205 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:23:11,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:23:11,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:23:11,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:23:11,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:23:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:23:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 10:23:11,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:23:11,317 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 10:23:11,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:23:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:23:11,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:23:11,590 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 10:23:11,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 10:23:11,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 18 [2018-11-18 10:23:11,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-18 10:23:11,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-18 10:23:11,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2018-11-18 10:23:11,617 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 18 states. [2018-11-18 10:23:12,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:23:12,127 INFO L93 Difference]: Finished difference Result 97 states and 117 transitions. [2018-11-18 10:23:12,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-18 10:23:12,128 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2018-11-18 10:23:12,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:23:12,129 INFO L225 Difference]: With dead ends: 97 [2018-11-18 10:23:12,129 INFO L226 Difference]: Without dead ends: 70 [2018-11-18 10:23:12,130 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=987, Unknown=0, NotChecked=0, Total=1190 [2018-11-18 10:23:12,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-18 10:23:12,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 60. [2018-11-18 10:23:12,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-18 10:23:12,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2018-11-18 10:23:12,137 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 38 [2018-11-18 10:23:12,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:23:12,138 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2018-11-18 10:23:12,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-18 10:23:12,138 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2018-11-18 10:23:12,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-18 10:23:12,139 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:23:12,139 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:23:12,140 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:23:12,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:23:12,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1321471087, now seen corresponding path program 1 times [2018-11-18 10:23:12,140 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:23:12,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:23:12,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:23:12,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:23:12,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:23:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:23:12,361 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:23:12,361 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:23:12,361 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 10:23:12,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:23:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:23:12,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:23:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:23:12,524 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 10:23:12,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 24 [2018-11-18 10:23:12,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-18 10:23:12,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-18 10:23:12,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2018-11-18 10:23:12,525 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand 24 states. [2018-11-18 10:23:12,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:23:12,992 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2018-11-18 10:23:12,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 10:23:12,992 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2018-11-18 10:23:12,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:23:12,993 INFO L225 Difference]: With dead ends: 73 [2018-11-18 10:23:12,993 INFO L226 Difference]: Without dead ends: 69 [2018-11-18 10:23:12,994 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=1118, Unknown=0, NotChecked=0, Total=1260 [2018-11-18 10:23:12,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-11-18 10:23:13,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2018-11-18 10:23:13,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-11-18 10:23:13,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2018-11-18 10:23:13,003 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 45 [2018-11-18 10:23:13,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:23:13,003 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2018-11-18 10:23:13,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-18 10:23:13,003 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2018-11-18 10:23:13,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-18 10:23:13,004 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:23:13,004 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:23:13,005 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:23:13,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:23:13,005 INFO L82 PathProgramCache]: Analyzing trace with hash 512124461, now seen corresponding path program 1 times [2018-11-18 10:23:13,005 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:23:13,005 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:23:13,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:23:13,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:23:13,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:23:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:23:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:23:13,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:23:13,157 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 10:23:13,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:23:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:23:13,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:23:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:23:13,400 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 10:23:13,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2018-11-18 10:23:13,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-18 10:23:13,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-18 10:23:13,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2018-11-18 10:23:13,401 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand 26 states. [2018-11-18 10:23:14,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:23:14,062 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2018-11-18 10:23:14,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-18 10:23:14,062 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 45 [2018-11-18 10:23:14,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:23:14,063 INFO L225 Difference]: With dead ends: 99 [2018-11-18 10:23:14,063 INFO L226 Difference]: Without dead ends: 77 [2018-11-18 10:23:14,064 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=307, Invalid=1585, Unknown=0, NotChecked=0, Total=1892 [2018-11-18 10:23:14,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-11-18 10:23:14,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 59. [2018-11-18 10:23:14,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-18 10:23:14,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2018-11-18 10:23:14,072 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 45 [2018-11-18 10:23:14,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:23:14,072 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2018-11-18 10:23:14,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-18 10:23:14,073 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2018-11-18 10:23:14,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-18 10:23:14,073 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:23:14,074 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:23:14,074 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:23:14,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:23:14,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1069126843, now seen corresponding path program 1 times [2018-11-18 10:23:14,074 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:23:14,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:23:14,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:23:14,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:23:14,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:23:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:23:14,266 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 10:23:14,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:23:14,266 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 10:23:14,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:23:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:23:14,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:23:14,463 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 10:23:14,498 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 10:23:14,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 26 [2018-11-18 10:23:14,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-18 10:23:14,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-18 10:23:14,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2018-11-18 10:23:14,500 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 26 states. [2018-11-18 10:23:15,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:23:15,040 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2018-11-18 10:23:15,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-18 10:23:15,040 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 57 [2018-11-18 10:23:15,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:23:15,041 INFO L225 Difference]: With dead ends: 73 [2018-11-18 10:23:15,041 INFO L226 Difference]: Without dead ends: 70 [2018-11-18 10:23:15,042 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=1516, Unknown=0, NotChecked=0, Total=1722 [2018-11-18 10:23:15,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-18 10:23:15,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2018-11-18 10:23:15,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-18 10:23:15,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2018-11-18 10:23:15,050 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 57 [2018-11-18 10:23:15,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:23:15,051 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2018-11-18 10:23:15,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-18 10:23:15,051 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2018-11-18 10:23:15,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-18 10:23:15,051 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:23:15,051 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:23:15,052 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:23:15,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:23:15,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1878473469, now seen corresponding path program 1 times [2018-11-18 10:23:15,052 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:23:15,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:23:15,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:23:15,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:23:15,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:23:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:23:15,204 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-18 10:23:15,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:23:15,204 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 10:23:15,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:23:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:23:15,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:23:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 10:23:15,493 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 10:23:15,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 34 [2018-11-18 10:23:15,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-18 10:23:15,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-18 10:23:15,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1032, Unknown=0, NotChecked=0, Total=1122 [2018-11-18 10:23:15,494 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 34 states. [2018-11-18 10:23:16,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:23:16,468 INFO L93 Difference]: Finished difference Result 105 states and 118 transitions. [2018-11-18 10:23:16,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-18 10:23:16,468 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 57 [2018-11-18 10:23:16,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:23:16,469 INFO L225 Difference]: With dead ends: 105 [2018-11-18 10:23:16,470 INFO L226 Difference]: Without dead ends: 88 [2018-11-18 10:23:16,471 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=3143, Unknown=0, NotChecked=0, Total=3540 [2018-11-18 10:23:16,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-11-18 10:23:16,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 79. [2018-11-18 10:23:16,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-11-18 10:23:16,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2018-11-18 10:23:16,483 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 57 [2018-11-18 10:23:16,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:23:16,483 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2018-11-18 10:23:16,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-18 10:23:16,483 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2018-11-18 10:23:16,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-18 10:23:16,484 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:23:16,484 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:23:16,485 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:23:16,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:23:16,485 INFO L82 PathProgramCache]: Analyzing trace with hash 482320829, now seen corresponding path program 1 times [2018-11-18 10:23:16,485 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:23:16,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:23:16,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:23:16,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:23:16,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:23:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:23:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-18 10:23:16,574 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:23:16,574 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 10:23:16,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:23:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:23:16,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:23:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-18 10:23:16,684 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 10:23:16,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-11-18 10:23:16,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 10:23:16,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 10:23:16,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-18 10:23:16,685 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 9 states. [2018-11-18 10:23:16,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:23:16,815 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2018-11-18 10:23:16,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 10:23:16,816 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2018-11-18 10:23:16,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:23:16,816 INFO L225 Difference]: With dead ends: 91 [2018-11-18 10:23:16,816 INFO L226 Difference]: Without dead ends: 74 [2018-11-18 10:23:16,817 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-11-18 10:23:16,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-11-18 10:23:16,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2018-11-18 10:23:16,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-18 10:23:16,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2018-11-18 10:23:16,823 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 57 [2018-11-18 10:23:16,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:23:16,824 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2018-11-18 10:23:16,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 10:23:16,824 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2018-11-18 10:23:16,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-18 10:23:16,825 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:23:16,825 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:23:16,825 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:23:16,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:23:16,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1118751113, now seen corresponding path program 1 times [2018-11-18 10:23:16,825 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:23:16,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:23:16,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:23:16,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:23:16,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:23:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:23:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:23:16,869 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 10:23:16,892 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 12 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2018-11-18 10:23:16,893 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 15 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2018-11-18 10:23:16,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:23:16 BoogieIcfgContainer [2018-11-18 10:23:16,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:23:16,906 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:23:16,906 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:23:16,906 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:23:16,906 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:23:10" (3/4) ... [2018-11-18 10:23:16,908 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 10:23:16,913 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 15 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2018-11-18 10:23:16,913 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 12 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2018-11-18 10:23:16,949 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_94ef4b5e-8690-4fd9-9460-3ac48d9f6588/bin-2019/uautomizer/witness.graphml [2018-11-18 10:23:16,950 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:23:16,950 INFO L168 Benchmark]: Toolchain (without parser) took 7039.66 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 320.9 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -129.1 MB). Peak memory consumption was 191.8 MB. Max. memory is 11.5 GB. [2018-11-18 10:23:16,951 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:23:16,951 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). Peak memory consumption was 37.8 MB. Max. memory is 11.5 GB. [2018-11-18 10:23:16,952 INFO L168 Benchmark]: Boogie Preprocessor took 39.13 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-11-18 10:23:16,952 INFO L168 Benchmark]: RCFGBuilder took 409.69 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: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:23:16,952 INFO L168 Benchmark]: TraceAbstraction took 6207.78 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 177.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -17.2 MB). Peak memory consumption was 160.5 MB. Max. memory is 11.5 GB. [2018-11-18 10:23:16,952 INFO L168 Benchmark]: Witness Printer took 43.76 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2018-11-18 10:23:16,954 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 336.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). Peak memory consumption was 37.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.13 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 409.69 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: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6207.78 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 177.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -17.2 MB). Peak memory consumption was 160.5 MB. Max. memory is 11.5 GB. * Witness Printer took 43.76 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 12 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 15 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 15 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 12 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L867] void * guard_malloc_counter = 0; [L887] struct list_head *elem = ((void *)0); [L900] FCALL static struct list_head head; VAL [\old(elem)=13, \old(elem)=9, \old(guard_malloc_counter)=10, \old(guard_malloc_counter)=11, \old(head)=null, \old(head)=null, elem={0:0}, guard_malloc_counter={0:0}, head={14:0}] [L903] struct list_head *dev1, *dev2; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:0}, head={14:0}] [L904] CALL, EXPR my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={14:0}] [L879] CALL, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={14:0}] [L871] COND TRUE (size > 0) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={14:0}, size=8] [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] RET return (void *) guard_malloc_counter; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={14:0}, size=8] [L879] EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, __getMemory(size)={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={14:0}, size=8] [L879] RET return __getMemory(size); [L904] EXPR my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:1}, head={14:0}, my_malloc(sizeof(*dev1))={0:1}] [L904] dev1 = my_malloc(sizeof(*dev1)) [L905] CALL, EXPR my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={14:0}] [L879] CALL, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={14:0}] [L871] COND TRUE (size > 0) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={14:0}, size=8] [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] RET return (void *) guard_malloc_counter; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, \result={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={14:0}, size=8] [L879] EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, __getMemory(size)={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={14:0}, size=8] [L879] RET return __getMemory(size); [L905] EXPR my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, elem={0:0}, guard_malloc_counter={0:2}, head={14:0}, my_malloc(sizeof(*dev2))={0:2}] [L905] dev2 = my_malloc(sizeof(*dev2)) [L906] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={14:0}] [L907] CALL list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={14:0}, head={14:0}, new={0:2}] [L890] COND TRUE (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={14:0}, head={14:0}, head={14:0}, new={0:2}, new={0:2}] [L891] COND TRUE __VERIFIER_nondet_int() [L892] RET elem = new VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:2}, guard_malloc_counter={0:2}, head={14:0}, head={14:0}, head={14:0}, new={0:2}, new={0:2}] [L907] list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:2}, guard_malloc_counter={0:2}, head={14:0}] [L908] CALL list_add(dev1, &head) VAL [\old(elem)=0, \old(elem)=2, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:2}, guard_malloc_counter={0:2}, head={14:0}, head={14:0}, new={0:1}] [L890] COND TRUE (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=2, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:2}, guard_malloc_counter={0:2}, head={14:0}, head={14:0}, head={14:0}, new={0:1}, new={0:1}] [L891] COND TRUE __VERIFIER_nondet_int() [L892] RET elem = new VAL [\old(elem)=0, \old(elem)=2, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={14:0}, head={14:0}, head={14:0}, new={0:1}, new={0:1}] [L908] list_add(dev1, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={14:0}] [L909] CALL list_del(dev2) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, entry={0:2}, guard_malloc_counter={0:2}, head={14:0}] [L896] COND FALSE, RET !(entry==elem) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, entry={0:2}, entry={0:2}, guard_malloc_counter={0:2}, head={14:0}] [L909] list_del(dev2) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={14:0}] [L910] CALL list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={14:0}, head={14:0}, new={0:2}] [L890] COND TRUE (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={14:0}, head={14:0}, head={14:0}, new={0:2}, new={0:2}] [L891] COND FALSE, RET !(__VERIFIER_nondet_int()) [L910] list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={14:0}] [L913] CALL list_add(dev1, &head) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={14:0}, head={14:0}, new={0:1}] [L890] COND FALSE !((new!=elem) ? (0) : __blast_assert ()) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={14:0}, head={14:0}, head={14:0}, new={0:1}, new={0:1}] [L890] CALL __blast_assert () VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={14:0}] [L6] __VERIFIER_error() VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={14:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 48 locations, 1 error locations. UNSAFE Result, 6.1s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 3.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 321 SDtfs, 495 SDslu, 1404 SDs, 0 SdLazy, 4870 SolverSat, 559 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 514 GetRequests, 274 SyntacticMatches, 11 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1371 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 49 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 713 NumberOfCodeBlocks, 713 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 635 ConstructedInterpolants, 0 QuantifiedInterpolants, 109006 SizeOfPredicates, 41 NumberOfNonLiveVariables, 1615 ConjunctsInSsa, 157 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 136/211 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...