./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 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/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_65e62c57-8487-47de-b343-e09464f6ec98/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/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 0.1.23-1dbac8b [2018-11-10 04:31:26,319 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 04:31:26,320 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 04:31:26,328 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 04:31:26,328 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 04:31:26,329 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 04:31:26,330 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 04:31:26,332 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 04:31:26,333 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 04:31:26,334 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 04:31:26,334 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 04:31:26,335 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 04:31:26,335 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 04:31:26,336 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 04:31:26,337 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 04:31:26,337 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 04:31:26,338 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 04:31:26,339 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 04:31:26,341 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 04:31:26,342 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 04:31:26,343 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 04:31:26,344 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 04:31:26,346 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 04:31:26,346 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 04:31:26,346 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 04:31:26,347 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 04:31:26,348 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 04:31:26,349 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 04:31:26,349 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 04:31:26,350 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 04:31:26,351 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 04:31:26,351 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 04:31:26,351 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 04:31:26,352 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 04:31:26,352 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 04:31:26,353 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 04:31:26,353 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 04:31:26,365 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 04:31:26,365 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 04:31:26,366 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 04:31:26,366 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 04:31:26,367 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 04:31:26,367 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 04:31:26,367 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 04:31:26,367 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 04:31:26,368 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 04:31:26,368 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 04:31:26,368 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 04:31:26,368 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 04:31:26,368 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 04:31:26,368 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 04:31:26,369 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 04:31:26,369 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 04:31:26,369 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 04:31:26,369 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 04:31:26,369 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 04:31:26,369 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 04:31:26,370 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 04:31:26,370 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 04:31:26,370 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:31:26,370 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 04:31:26,370 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 04:31:26,370 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 04:31:26,371 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 04:31:26,371 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 04:31:26,371 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 04:31:26,371 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_65e62c57-8487-47de-b343-e09464f6ec98/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 [2018-11-10 04:31:26,400 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 04:31:26,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 04:31:26,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 04:31:26,416 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 04:31:26,416 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 04:31:26,417 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/rule60_list2_true-termination.c_false-unreach-call_1.i [2018-11-10 04:31:26,470 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/bin-2019/uautomizer/data/7931055c1/9cd9481242834a2582ab79a92d475a95/FLAG2723029a9 [2018-11-10 04:31:26,855 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 04:31:26,856 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/sv-benchmarks/c/ldv-regression/rule60_list2_true-termination.c_false-unreach-call_1.i [2018-11-10 04:31:26,864 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/bin-2019/uautomizer/data/7931055c1/9cd9481242834a2582ab79a92d475a95/FLAG2723029a9 [2018-11-10 04:31:26,875 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/bin-2019/uautomizer/data/7931055c1/9cd9481242834a2582ab79a92d475a95 [2018-11-10 04:31:26,877 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 04:31:26,879 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 04:31:26,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 04:31:26,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 04:31:26,884 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 04:31:26,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:31:26" (1/1) ... [2018-11-10 04:31:26,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc45616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:31:26, skipping insertion in model container [2018-11-10 04:31:26,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:31:26" (1/1) ... [2018-11-10 04:31:26,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 04:31:26,936 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 04:31:27,167 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:31:27,172 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 04:31:27,203 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:31:27,252 INFO L193 MainTranslator]: Completed translation [2018-11-10 04:31:27,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:31:27 WrapperNode [2018-11-10 04:31:27,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 04:31:27,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 04:31:27,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 04:31:27,254 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 04:31:27,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:31:27" (1/1) ... [2018-11-10 04:31:27,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:31:27" (1/1) ... [2018-11-10 04:31:27,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:31:27" (1/1) ... [2018-11-10 04:31:27,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:31:27" (1/1) ... [2018-11-10 04:31:27,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:31:27" (1/1) ... [2018-11-10 04:31:27,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:31:27" (1/1) ... [2018-11-10 04:31:27,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:31:27" (1/1) ... [2018-11-10 04:31:27,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 04:31:27,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 04:31:27,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 04:31:27,353 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 04:31:27,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:31:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/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 [2018-11-10 04:31:27,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 04:31:27,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 04:31:27,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2018-11-10 04:31:27,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2018-11-10 04:31:27,406 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2018-11-10 04:31:27,406 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2018-11-10 04:31:27,406 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2018-11-10 04:31:27,406 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 04:31:27,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 04:31:27,407 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2018-11-10 04:31:27,407 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2018-11-10 04:31:27,407 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2018-11-10 04:31:27,407 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2018-11-10 04:31:27,407 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2018-11-10 04:31:27,407 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2018-11-10 04:31:27,408 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2018-11-10 04:31:27,408 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2018-11-10 04:31:27,408 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2018-11-10 04:31:27,408 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2018-11-10 04:31:27,408 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2018-11-10 04:31:27,408 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2018-11-10 04:31:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2018-11-10 04:31:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2018-11-10 04:31:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2018-11-10 04:31:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2018-11-10 04:31:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2018-11-10 04:31:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2018-11-10 04:31:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2018-11-10 04:31:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2018-11-10 04:31:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2018-11-10 04:31:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2018-11-10 04:31:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2018-11-10 04:31:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2018-11-10 04:31:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2018-11-10 04:31:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2018-11-10 04:31:27,410 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2018-11-10 04:31:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2018-11-10 04:31:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2018-11-10 04:31:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2018-11-10 04:31:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2018-11-10 04:31:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2018-11-10 04:31:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2018-11-10 04:31:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2018-11-10 04:31:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2018-11-10 04:31:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2018-11-10 04:31:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2018-11-10 04:31:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2018-11-10 04:31:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2018-11-10 04:31:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2018-11-10 04:31:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2018-11-10 04:31:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2018-11-10 04:31:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2018-11-10 04:31:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2018-11-10 04:31:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2018-11-10 04:31:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2018-11-10 04:31:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2018-11-10 04:31:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2018-11-10 04:31:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2018-11-10 04:31:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2018-11-10 04:31:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2018-11-10 04:31:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2018-11-10 04:31:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2018-11-10 04:31:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2018-11-10 04:31:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2018-11-10 04:31:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2018-11-10 04:31:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2018-11-10 04:31:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2018-11-10 04:31:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2018-11-10 04:31:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2018-11-10 04:31:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2018-11-10 04:31:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2018-11-10 04:31:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2018-11-10 04:31:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2018-11-10 04:31:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2018-11-10 04:31:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2018-11-10 04:31:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2018-11-10 04:31:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2018-11-10 04:31:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2018-11-10 04:31:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2018-11-10 04:31:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2018-11-10 04:31:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2018-11-10 04:31:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2018-11-10 04:31:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2018-11-10 04:31:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2018-11-10 04:31:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2018-11-10 04:31:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2018-11-10 04:31:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2018-11-10 04:31:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2018-11-10 04:31:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2018-11-10 04:31:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2018-11-10 04:31:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2018-11-10 04:31:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2018-11-10 04:31:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2018-11-10 04:31:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2018-11-10 04:31:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2018-11-10 04:31:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2018-11-10 04:31:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2018-11-10 04:31:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2018-11-10 04:31:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2018-11-10 04:31:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2018-11-10 04:31:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2018-11-10 04:31:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2018-11-10 04:31:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2018-11-10 04:31:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2018-11-10 04:31:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2018-11-10 04:31:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2018-11-10 04:31:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2018-11-10 04:31:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2018-11-10 04:31:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2018-11-10 04:31:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2018-11-10 04:31:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2018-11-10 04:31:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-10 04:31:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-10 04:31:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-10 04:31:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-10 04:31:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-10 04:31:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2018-11-10 04:31:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-10 04:31:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2018-11-10 04:31:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2018-11-10 04:31:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2018-11-10 04:31:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2018-11-10 04:31:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2018-11-10 04:31:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2018-11-10 04:31:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2018-11-10 04:31:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2018-11-10 04:31:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2018-11-10 04:31:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2018-11-10 04:31:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2018-11-10 04:31:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 04:31:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2018-11-10 04:31:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2018-11-10 04:31:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2018-11-10 04:31:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2018-11-10 04:31:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 04:31:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 04:31:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 04:31:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-10 04:31:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 04:31:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-10 04:31:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 04:31:27,810 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 04:31:27,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:31:27 BoogieIcfgContainer [2018-11-10 04:31:27,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 04:31:27,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 04:31:27,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 04:31:27,815 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 04:31:27,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 04:31:26" (1/3) ... [2018-11-10 04:31:27,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ec8192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:31:27, skipping insertion in model container [2018-11-10 04:31:27,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:31:27" (2/3) ... [2018-11-10 04:31:27,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ec8192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:31:27, skipping insertion in model container [2018-11-10 04:31:27,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:31:27" (3/3) ... [2018-11-10 04:31:27,818 INFO L112 eAbstractionObserver]: Analyzing ICFG rule60_list2_true-termination.c_false-unreach-call_1.i [2018-11-10 04:31:27,826 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 04:31:27,833 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 04:31:27,844 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 04:31:27,868 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 04:31:27,868 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 04:31:27,868 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 04:31:27,868 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 04:31:27,868 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 04:31:27,869 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 04:31:27,869 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 04:31:27,869 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 04:31:27,869 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 04:31:27,884 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2018-11-10 04:31:27,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 04:31:27,889 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:31:27,890 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:31:27,892 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:31:27,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:31:27,896 INFO L82 PathProgramCache]: Analyzing trace with hash 741213483, now seen corresponding path program 1 times [2018-11-10 04:31:27,897 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:31:27,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:31:27,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:27,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:31:27,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:31:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:31:28,077 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:31:28,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-10 04:31:28,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 04:31:28,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 04:31:28,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-10 04:31:28,092 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 6 states. [2018-11-10 04:31:28,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:31:28,177 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2018-11-10 04:31:28,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 04:31:28,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-11-10 04:31:28,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:31:28,186 INFO L225 Difference]: With dead ends: 89 [2018-11-10 04:31:28,186 INFO L226 Difference]: Without dead ends: 43 [2018-11-10 04:31:28,189 INFO L605 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 [2018-11-10 04:31:28,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-10 04:31:28,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-10 04:31:28,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-10 04:31:28,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2018-11-10 04:31:28,223 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 16 [2018-11-10 04:31:28,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:31:28,223 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2018-11-10 04:31:28,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 04:31:28,224 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2018-11-10 04:31:28,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-10 04:31:28,225 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:31:28,226 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, 1, 1, 1] [2018-11-10 04:31:28,226 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:31:28,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:31:28,226 INFO L82 PathProgramCache]: Analyzing trace with hash -279353964, now seen corresponding path program 1 times [2018-11-10 04:31:28,227 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:31:28,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:31:28,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:28,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:31:28,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:31:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 04:31:28,356 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:31:28,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-10 04:31:28,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 04:31:28,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 04:31:28,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-10 04:31:28,358 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 7 states. [2018-11-10 04:31:28,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:31:28,404 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2018-11-10 04:31:28,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 04:31:28,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2018-11-10 04:31:28,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:31:28,407 INFO L225 Difference]: With dead ends: 68 [2018-11-10 04:31:28,407 INFO L226 Difference]: Without dead ends: 48 [2018-11-10 04:31:28,408 INFO L605 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 [2018-11-10 04:31:28,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-10 04:31:28,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-11-10 04:31:28,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-10 04:31:28,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2018-11-10 04:31:28,419 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 41 [2018-11-10 04:31:28,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:31:28,419 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2018-11-10 04:31:28,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 04:31:28,420 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2018-11-10 04:31:28,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-10 04:31:28,421 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:31:28,421 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, 1, 1, 1] [2018-11-10 04:31:28,421 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:31:28,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:31:28,422 INFO L82 PathProgramCache]: Analyzing trace with hash -572756971, now seen corresponding path program 1 times [2018-11-10 04:31:28,422 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:31:28,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:31:28,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:28,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:31:28,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:31:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 04:31:28,532 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:31:28,532 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/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 [2018-11-10 04:31:28,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:31:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:31:28,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:31:28,877 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 04:31:28,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:31:28,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 18 [2018-11-10 04:31:28,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-10 04:31:28,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-10 04:31:28,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2018-11-10 04:31:28,904 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 18 states. [2018-11-10 04:31:29,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:31:29,536 INFO L93 Difference]: Finished difference Result 100 states and 120 transitions. [2018-11-10 04:31:29,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-10 04:31:29,536 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 41 [2018-11-10 04:31:29,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:31:29,538 INFO L225 Difference]: With dead ends: 100 [2018-11-10 04:31:29,539 INFO L226 Difference]: Without dead ends: 73 [2018-11-10 04:31:29,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=987, Unknown=0, NotChecked=0, Total=1190 [2018-11-10 04:31:29,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-11-10 04:31:29,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2018-11-10 04:31:29,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-10 04:31:29,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2018-11-10 04:31:29,550 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 41 [2018-11-10 04:31:29,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:31:29,551 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2018-11-10 04:31:29,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-10 04:31:29,551 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2018-11-10 04:31:29,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-10 04:31:29,552 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:31:29,553 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, 1, 1, 1] [2018-11-10 04:31:29,553 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:31:29,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:31:29,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1044968003, now seen corresponding path program 1 times [2018-11-10 04:31:29,554 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:31:29,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:31:29,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:29,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:31:29,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:31:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:31:29,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:31:29,813 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/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 [2018-11-10 04:31:29,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:31:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:31:29,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:31:29,985 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:31:30,005 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:31:30,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 24 [2018-11-10 04:31:30,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-10 04:31:30,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-10 04:31:30,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2018-11-10 04:31:30,007 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand 24 states. [2018-11-10 04:31:30,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:31:30,602 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions. [2018-11-10 04:31:30,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-10 04:31:30,603 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 48 [2018-11-10 04:31:30,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:31:30,604 INFO L225 Difference]: With dead ends: 76 [2018-11-10 04:31:30,604 INFO L226 Difference]: Without dead ends: 72 [2018-11-10 04:31:30,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=142, Invalid=1118, Unknown=0, NotChecked=0, Total=1260 [2018-11-10 04:31:30,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-11-10 04:31:30,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2018-11-10 04:31:30,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-11-10 04:31:30,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2018-11-10 04:31:30,615 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 48 [2018-11-10 04:31:30,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:31:30,615 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2018-11-10 04:31:30,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-10 04:31:30,616 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2018-11-10 04:31:30,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-10 04:31:30,617 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:31:30,617 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, 1, 1, 1] [2018-11-10 04:31:30,617 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:31:30,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:31:30,617 INFO L82 PathProgramCache]: Analyzing trace with hash 235621377, now seen corresponding path program 1 times [2018-11-10 04:31:30,617 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:31:30,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:31:30,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:30,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:31:30,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:31:30,746 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:31:30,747 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:31:30,747 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/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 [2018-11-10 04:31:30,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:31:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:31:30,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:31:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:31:31,059 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:31:31,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2018-11-10 04:31:31,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-10 04:31:31,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-10 04:31:31,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2018-11-10 04:31:31,061 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand 25 states. [2018-11-10 04:31:31,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:31:31,678 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2018-11-10 04:31:31,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-10 04:31:31,679 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-11-10 04:31:31,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:31:31,680 INFO L225 Difference]: With dead ends: 91 [2018-11-10 04:31:31,680 INFO L226 Difference]: Without dead ends: 75 [2018-11-10 04:31:31,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=1244, Unknown=0, NotChecked=0, Total=1482 [2018-11-10 04:31:31,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-11-10 04:31:31,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 62. [2018-11-10 04:31:31,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-10 04:31:31,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2018-11-10 04:31:31,689 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 48 [2018-11-10 04:31:31,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:31:31,690 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2018-11-10 04:31:31,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-10 04:31:31,690 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2018-11-10 04:31:31,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-10 04:31:31,691 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:31:31,691 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, 1, 1, 1] [2018-11-10 04:31:31,691 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:31:31,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:31:31,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1037770001, now seen corresponding path program 1 times [2018-11-10 04:31:31,692 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:31:31,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:31:31,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:31,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:31:31,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:31:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 04:31:31,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:31:31,946 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/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 [2018-11-10 04:31:31,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:31:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:31:31,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:31:32,168 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 04:31:32,189 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:31:32,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 26 [2018-11-10 04:31:32,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-10 04:31:32,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-10 04:31:32,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2018-11-10 04:31:32,190 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 26 states. [2018-11-10 04:31:32,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:31:32,863 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2018-11-10 04:31:32,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-10 04:31:32,863 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 60 [2018-11-10 04:31:32,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:31:32,865 INFO L225 Difference]: With dead ends: 86 [2018-11-10 04:31:32,865 INFO L226 Difference]: Without dead ends: 73 [2018-11-10 04:31:32,866 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=206, Invalid=1600, Unknown=0, NotChecked=0, Total=1806 [2018-11-10 04:31:32,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-11-10 04:31:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2018-11-10 04:31:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-11-10 04:31:32,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2018-11-10 04:31:32,875 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 60 [2018-11-10 04:31:32,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:31:32,876 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2018-11-10 04:31:32,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-10 04:31:32,876 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2018-11-10 04:31:32,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-10 04:31:32,877 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:31:32,877 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, 1, 1, 1] [2018-11-10 04:31:32,878 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:31:32,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:31:32,878 INFO L82 PathProgramCache]: Analyzing trace with hash 228423375, now seen corresponding path program 1 times [2018-11-10 04:31:32,878 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:31:32,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:31:32,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:32,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:31:32,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:31:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 04:31:33,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:31:33,072 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/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 [2018-11-10 04:31:33,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:31:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:31:33,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:31:33,244 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 04:31:33,264 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:31:33,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 26 [2018-11-10 04:31:33,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-10 04:31:33,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-10 04:31:33,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2018-11-10 04:31:33,266 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 26 states. [2018-11-10 04:31:33,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:31:33,928 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2018-11-10 04:31:33,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-10 04:31:33,929 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 60 [2018-11-10 04:31:33,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:31:33,930 INFO L225 Difference]: With dead ends: 76 [2018-11-10 04:31:33,930 INFO L226 Difference]: Without dead ends: 73 [2018-11-10 04:31:33,931 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=1516, Unknown=0, NotChecked=0, Total=1722 [2018-11-10 04:31:33,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-11-10 04:31:33,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2018-11-10 04:31:33,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-11-10 04:31:33,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2018-11-10 04:31:33,942 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 60 [2018-11-10 04:31:33,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:31:33,942 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2018-11-10 04:31:33,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-10 04:31:33,942 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2018-11-10 04:31:33,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-10 04:31:33,943 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:31:33,944 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, 1, 1, 1] [2018-11-10 04:31:33,944 INFO L424 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:31:33,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:31:33,944 INFO L82 PathProgramCache]: Analyzing trace with hash 450963987, now seen corresponding path program 1 times [2018-11-10 04:31:33,944 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:31:33,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:31:33,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:33,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:31:33,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:31:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-10 04:31:34,187 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:31:34,187 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/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 [2018-11-10 04:31:34,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:31:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:31:34,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:31:34,539 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-10 04:31:34,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:31:34,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [15] total 28 [2018-11-10 04:31:34,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-10 04:31:34,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-10 04:31:34,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2018-11-10 04:31:34,560 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 28 states. [2018-11-10 04:31:35,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:31:35,245 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2018-11-10 04:31:35,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-10 04:31:35,245 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 60 [2018-11-10 04:31:35,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:31:35,246 INFO L225 Difference]: With dead ends: 97 [2018-11-10 04:31:35,246 INFO L226 Difference]: Without dead ends: 90 [2018-11-10 04:31:35,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=245, Invalid=1395, Unknown=0, NotChecked=0, Total=1640 [2018-11-10 04:31:35,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-11-10 04:31:35,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2018-11-10 04:31:35,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-11-10 04:31:35,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2018-11-10 04:31:35,259 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 60 [2018-11-10 04:31:35,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:31:35,260 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2018-11-10 04:31:35,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-10 04:31:35,260 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2018-11-10 04:31:35,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-10 04:31:35,260 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:31:35,261 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, 1, 1, 1] [2018-11-10 04:31:35,261 INFO L424 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:31:35,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:31:35,261 INFO L82 PathProgramCache]: Analyzing trace with hash -358382639, now seen corresponding path program 1 times [2018-11-10 04:31:35,261 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:31:35,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:31:35,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:35,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:31:35,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:31:35,379 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-10 04:31:35,379 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:31:35,379 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 04:31:35,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:31:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:31:35,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:31:35,471 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-10 04:31:35,502 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:31:35,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-11-10 04:31:35,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 04:31:35,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 04:31:35,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-10 04:31:35,503 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 9 states. [2018-11-10 04:31:35,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:31:35,656 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2018-11-10 04:31:35,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 04:31:35,657 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2018-11-10 04:31:35,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:31:35,659 INFO L225 Difference]: With dead ends: 94 [2018-11-10 04:31:35,659 INFO L226 Difference]: Without dead ends: 77 [2018-11-10 04:31:35,659 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-11-10 04:31:35,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-11-10 04:31:35,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2018-11-10 04:31:35,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-10 04:31:35,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2018-11-10 04:31:35,669 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 60 [2018-11-10 04:31:35,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:31:35,669 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2018-11-10 04:31:35,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 04:31:35,669 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2018-11-10 04:31:35,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-10 04:31:35,670 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:31:35,670 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, 1, 1, 1] [2018-11-10 04:31:35,671 INFO L424 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:31:35,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:31:35,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1522564922, now seen corresponding path program 1 times [2018-11-10 04:31:35,671 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:31:35,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:31:35,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:35,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:31:35,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:31:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:31:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:31:35,725 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 04:31:35,755 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 12 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2018-11-10 04:31:35,756 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 15 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2018-11-10 04:31:35,757 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 12 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2018-11-10 04:31:35,758 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 15 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2018-11-10 04:31:35,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 04:31:35 BoogieIcfgContainer [2018-11-10 04:31:35,779 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 04:31:35,781 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 04:31:35,781 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 04:31:35,781 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 04:31:35,781 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:31:27" (3/4) ... [2018-11-10 04:31:35,785 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 04:31:35,791 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 15 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2018-11-10 04:31:35,791 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 12 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2018-11-10 04:31:35,792 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 12 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2018-11-10 04:31:35,792 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 15 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2018-11-10 04:31:35,838 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_65e62c57-8487-47de-b343-e09464f6ec98/bin-2019/uautomizer/witness.graphml [2018-11-10 04:31:35,838 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 04:31:35,839 INFO L168 Benchmark]: Toolchain (without parser) took 8961.48 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 336.6 MB). Free memory was 958.1 MB in the beginning and 972.4 MB in the end (delta: -14.3 MB). Peak memory consumption was 322.3 MB. Max. memory is 11.5 GB. [2018-11-10 04:31:35,840 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:31:35,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.76 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 931.2 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-11-10 04:31:35,841 INFO L168 Benchmark]: Boogie Preprocessor took 98.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.2 MB). Free memory was 931.2 MB in the beginning and 1.2 GB in the end (delta: -237.2 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2018-11-10 04:31:35,841 INFO L168 Benchmark]: RCFGBuilder took 458.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 11.5 GB. [2018-11-10 04:31:35,842 INFO L168 Benchmark]: TraceAbstraction took 7967.49 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 159.4 MB). Free memory was 1.1 GB in the beginning and 984.2 MB in the end (delta: 136.8 MB). Peak memory consumption was 296.2 MB. Max. memory is 11.5 GB. [2018-11-10 04:31:35,842 INFO L168 Benchmark]: Witness Printer took 57.97 ms. Allocated memory is still 1.4 GB. Free memory was 984.2 MB in the beginning and 975.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 11.5 GB. [2018-11-10 04:31:35,844 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 373.76 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 931.2 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 98.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.2 MB). Free memory was 931.2 MB in the beginning and 1.2 GB in the end (delta: -237.2 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 458.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7967.49 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 159.4 MB). Free memory was 1.1 GB in the beginning and 984.2 MB in the end (delta: 136.8 MB). Peak memory consumption was 296.2 MB. Max. memory is 11.5 GB. * Witness Printer took 57.97 ms. Allocated memory is still 1.4 GB. Free memory was 984.2 MB in the beginning and 975.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 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 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# - 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# * 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); VAL [\old(elem)=14, \old(elem)=9, \old(guard_malloc_counter)=11, \old(guard_malloc_counter)=10, \old(head)=null, \old(head)=null, elem={0:0}, guard_malloc_counter={0:0}, head={15:12}] [L900] FCALL static struct list_head head; VAL [\old(elem)=9, \old(elem)=14, \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={13:0}] [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={13:0}] [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={13:0}] [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={13:0}] [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={13:0}, 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={13:0}, 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={13:0}, 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={13:0}, 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={13:0}] [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={13:0}] [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={13:0}, 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)=1, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={13:0}, 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={13:0}, 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={13:0}, 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={13:0}] [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={13:0}, head={13:0}, 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={13:0}, head={13:0}, head={13:0}, 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={13:0}, head={13:0}, head={13:0}, 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={13:0}] [L908] CALL list_add(dev1, &head) 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={13:0}, head={13:0}, new={0:1}] [L890] COND TRUE (new!=elem) ? (0) : __blast_assert () 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={13:0}, head={13:0}, head={13:0}, 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={13:0}, head={13:0}, head={13:0}, 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={13:0}] [L909] CALL list_del(dev2) VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, entry={0:2}, guard_malloc_counter={0:2}, head={13:0}] [L896] COND FALSE, RET !(entry==elem) VAL [\old(elem)=1, \old(elem)=0, \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={13:0}] [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={13:0}] [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={13:0}, head={13:0}, new={0:2}] [L890] COND TRUE (new!=elem) ? (0) : __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={13:0}, head={13:0}, head={13:0}, 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={13:0}] [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={13:0}, head={13:0}, new={0:1}] [L890] COND FALSE !((new!=elem) ? (0) : __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={13:0}, head={13:0}, head={13:0}, new={0:1}, new={0:1}] [L890] CALL __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={13:0}] [L6] __VERIFIER_error() 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={13:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 51 locations, 1 error locations. UNSAFE Result, 7.9s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 4.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 384 SDtfs, 576 SDslu, 1890 SDs, 0 SdLazy, 4894 SolverSat, 646 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 609 GetRequests, 349 SyntacticMatches, 14 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1158 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=8, 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 51 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 878 NumberOfCodeBlocks, 878 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 795 ConstructedInterpolants, 0 QuantifiedInterpolants, 141866 SizeOfPredicates, 47 NumberOfNonLiveVariables, 1934 ConjunctsInSsa, 181 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 173/253 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...