./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/rule60_list_true-termination.c_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_55b394f2-4a02-4be0-8761-ae804300f67e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_55b394f2-4a02-4be0-8761-ae804300f67e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_55b394f2-4a02-4be0-8761-ae804300f67e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_55b394f2-4a02-4be0-8761-ae804300f67e/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/rule60_list_true-termination.c_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_55b394f2-4a02-4be0-8761-ae804300f67e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_55b394f2-4a02-4be0-8761-ae804300f67e/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 99300654c640d2c4f7b9514479be090401414cf7 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 12:11:05,710 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:11:05,711 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:11:05,717 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:11:05,717 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:11:05,718 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:11:05,719 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:11:05,720 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:11:05,721 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:11:05,721 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:11:05,722 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:11:05,722 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:11:05,723 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:11:05,723 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:11:05,724 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:11:05,724 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:11:05,724 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:11:05,726 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:11:05,727 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:11:05,728 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:11:05,728 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:11:05,729 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:11:05,730 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:11:05,730 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:11:05,730 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:11:05,731 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:11:05,732 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:11:05,732 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:11:05,733 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:11:05,733 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:11:05,734 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:11:05,734 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:11:05,734 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:11:05,734 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:11:05,735 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:11:05,736 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:11:05,736 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_55b394f2-4a02-4be0-8761-ae804300f67e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 12:11:05,744 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:11:05,744 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:11:05,745 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:11:05,745 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 12:11:05,745 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 12:11:05,745 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 12:11:05,745 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 12:11:05,746 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:11:05,746 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:11:05,746 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:11:05,746 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:11:05,746 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:11:05,746 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:11:05,746 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:11:05,746 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:11:05,747 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:11:05,747 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:11:05,747 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:11:05,747 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:11:05,747 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:11:05,747 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:11:05,747 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:11:05,748 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:11:05,748 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:11:05,748 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:11:05,748 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:11:05,748 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:11:05,748 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 12:11:05,748 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:11:05,748 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:11:05,748 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_55b394f2-4a02-4be0-8761-ae804300f67e/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 -> 99300654c640d2c4f7b9514479be090401414cf7 [2018-11-18 12:11:05,769 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:11:05,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:11:05,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:11:05,779 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:11:05,780 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:11:05,780 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_55b394f2-4a02-4be0-8761-ae804300f67e/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/rule60_list_true-termination.c_true-unreach-call.i [2018-11-18 12:11:05,816 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_55b394f2-4a02-4be0-8761-ae804300f67e/bin-2019/uautomizer/data/2774146c5/e8247559b9e0440e870e4e6e9339e3cf/FLAG662698f80 [2018-11-18 12:11:06,244 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:11:06,245 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_55b394f2-4a02-4be0-8761-ae804300f67e/sv-benchmarks/c/ldv-regression/rule60_list_true-termination.c_true-unreach-call.i [2018-11-18 12:11:06,251 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_55b394f2-4a02-4be0-8761-ae804300f67e/bin-2019/uautomizer/data/2774146c5/e8247559b9e0440e870e4e6e9339e3cf/FLAG662698f80 [2018-11-18 12:11:06,261 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_55b394f2-4a02-4be0-8761-ae804300f67e/bin-2019/uautomizer/data/2774146c5/e8247559b9e0440e870e4e6e9339e3cf [2018-11-18 12:11:06,263 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:11:06,264 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 12:11:06,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:11:06,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:11:06,268 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:11:06,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:11:06" (1/1) ... [2018-11-18 12:11:06,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14211896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:11:06, skipping insertion in model container [2018-11-18 12:11:06,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:11:06" (1/1) ... [2018-11-18 12:11:06,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:11:06,302 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:11:06,472 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:11:06,480 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:11:06,543 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:11:06,580 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:11:06,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:11:06 WrapperNode [2018-11-18 12:11:06,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:11:06,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:11:06,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:11:06,582 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:11:06,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:11:06" (1/1) ... [2018-11-18 12:11:06,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:11:06" (1/1) ... [2018-11-18 12:11:06,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:11:06" (1/1) ... [2018-11-18 12:11:06,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:11:06" (1/1) ... [2018-11-18 12:11:06,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:11:06" (1/1) ... [2018-11-18 12:11:06,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:11:06" (1/1) ... [2018-11-18 12:11:06,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:11:06" (1/1) ... [2018-11-18 12:11:06,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:11:06,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:11:06,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:11:06,621 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:11:06,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:11:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55b394f2-4a02-4be0-8761-ae804300f67e/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:11:06,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:11:06,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:11:06,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2018-11-18 12:11:06,660 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2018-11-18 12:11:06,660 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2018-11-18 12:11:06,660 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:11:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 12:11:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2018-11-18 12:11:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2018-11-18 12:11:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2018-11-18 12:11:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2018-11-18 12:11:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2018-11-18 12:11:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2018-11-18 12:11:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2018-11-18 12:11:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2018-11-18 12:11:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2018-11-18 12:11:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2018-11-18 12:11:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2018-11-18 12:11:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2018-11-18 12:11:06,661 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2018-11-18 12:11:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2018-11-18 12:11:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2018-11-18 12:11:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2018-11-18 12:11:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2018-11-18 12:11:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2018-11-18 12:11:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2018-11-18 12:11:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2018-11-18 12:11:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2018-11-18 12:11:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2018-11-18 12:11:06,662 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2018-11-18 12:11:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2018-11-18 12:11:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2018-11-18 12:11:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2018-11-18 12:11:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2018-11-18 12:11:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2018-11-18 12:11:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2018-11-18 12:11:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2018-11-18 12:11:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2018-11-18 12:11:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2018-11-18 12:11:06,663 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2018-11-18 12:11:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2018-11-18 12:11:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2018-11-18 12:11:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2018-11-18 12:11:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2018-11-18 12:11:06,664 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2018-11-18 12:11:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2018-11-18 12:11:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2018-11-18 12:11:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2018-11-18 12:11:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2018-11-18 12:11:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2018-11-18 12:11:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2018-11-18 12:11:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2018-11-18 12:11:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2018-11-18 12:11:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2018-11-18 12:11:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2018-11-18 12:11:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2018-11-18 12:11:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2018-11-18 12:11:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2018-11-18 12:11:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2018-11-18 12:11:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2018-11-18 12:11:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2018-11-18 12:11:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2018-11-18 12:11:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2018-11-18 12:11:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2018-11-18 12:11:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2018-11-18 12:11:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2018-11-18 12:11:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2018-11-18 12:11:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2018-11-18 12:11:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2018-11-18 12:11:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2018-11-18 12:11:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2018-11-18 12:11:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2018-11-18 12:11:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2018-11-18 12:11:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2018-11-18 12:11:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2018-11-18 12:11:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2018-11-18 12:11:06,672 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2018-11-18 12:11:06,672 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2018-11-18 12:11:06,672 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2018-11-18 12:11:06,672 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2018-11-18 12:11:06,672 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2018-11-18 12:11:06,672 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2018-11-18 12:11:06,672 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2018-11-18 12:11:06,672 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2018-11-18 12:11:06,672 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2018-11-18 12:11:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2018-11-18 12:11:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2018-11-18 12:11:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2018-11-18 12:11:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2018-11-18 12:11:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2018-11-18 12:11:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2018-11-18 12:11:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2018-11-18 12:11:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2018-11-18 12:11:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2018-11-18 12:11:06,674 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2018-11-18 12:11:06,674 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2018-11-18 12:11:06,674 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2018-11-18 12:11:06,674 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2018-11-18 12:11:06,674 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2018-11-18 12:11:06,674 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2018-11-18 12:11:06,674 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2018-11-18 12:11:06,675 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2018-11-18 12:11:06,675 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2018-11-18 12:11:06,675 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2018-11-18 12:11:06,675 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2018-11-18 12:11:06,675 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2018-11-18 12:11:06,675 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2018-11-18 12:11:06,675 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2018-11-18 12:11:06,675 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2018-11-18 12:11:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-18 12:11:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-18 12:11:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-18 12:11:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-18 12:11:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-18 12:11:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2018-11-18 12:11:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-18 12:11:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2018-11-18 12:11:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2018-11-18 12:11:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2018-11-18 12:11:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2018-11-18 12:11:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2018-11-18 12:11:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2018-11-18 12:11:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2018-11-18 12:11:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2018-11-18 12:11:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2018-11-18 12:11:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2018-11-18 12:11:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2018-11-18 12:11:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2018-11-18 12:11:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 12:11:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 12:11:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2018-11-18 12:11:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:11:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:11:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:11:06,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 12:11:06,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 12:11:06,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:11:06,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 12:11:06,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 12:11:06,952 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:11:06,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:11:06 BoogieIcfgContainer [2018-11-18 12:11:06,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:11:06,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:11:06,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:11:06,955 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:11:06,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:11:06" (1/3) ... [2018-11-18 12:11:06,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0f7def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:11:06, skipping insertion in model container [2018-11-18 12:11:06,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:11:06" (2/3) ... [2018-11-18 12:11:06,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0f7def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:11:06, skipping insertion in model container [2018-11-18 12:11:06,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:11:06" (3/3) ... [2018-11-18 12:11:06,958 INFO L112 eAbstractionObserver]: Analyzing ICFG rule60_list_true-termination.c_true-unreach-call.i [2018-11-18 12:11:06,965 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:11:06,971 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:11:06,983 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:11:07,000 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 12:11:07,001 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:11:07,001 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:11:07,001 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:11:07,001 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:11:07,001 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:11:07,001 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:11:07,001 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:11:07,001 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:11:07,015 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-18 12:11:07,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 12:11:07,019 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:11:07,020 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:11:07,022 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:11:07,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:11:07,026 INFO L82 PathProgramCache]: Analyzing trace with hash 2070742689, now seen corresponding path program 1 times [2018-11-18 12:11:07,027 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:11:07,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:11:07,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:11:07,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:11:07,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:11:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:11:07,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:11:07,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:11:07,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 12:11:07,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 12:11:07,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 12:11:07,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-18 12:11:07,269 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2018-11-18 12:11:07,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:11:07,366 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2018-11-18 12:11:07,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 12:11:07,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-11-18 12:11:07,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:11:07,373 INFO L225 Difference]: With dead ends: 55 [2018-11-18 12:11:07,373 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 12:11:07,375 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-18 12:11:07,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 12:11:07,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-18 12:11:07,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 12:11:07,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-11-18 12:11:07,399 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 12 [2018-11-18 12:11:07,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:11:07,400 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-11-18 12:11:07,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 12:11:07,400 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-11-18 12:11:07,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 12:11:07,400 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:11:07,400 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:11:07,401 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:11:07,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:11:07,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1302580324, now seen corresponding path program 1 times [2018-11-18 12:11:07,401 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:11:07,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:11:07,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:11:07,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:11:07,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:11:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:11:07,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:11:07,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:11:07,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 12:11:07,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 12:11:07,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 12:11:07,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-18 12:11:07,561 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 9 states. [2018-11-18 12:11:07,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:11:07,695 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2018-11-18 12:11:07,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 12:11:07,696 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-11-18 12:11:07,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:11:07,696 INFO L225 Difference]: With dead ends: 28 [2018-11-18 12:11:07,696 INFO L226 Difference]: Without dead ends: 25 [2018-11-18 12:11:07,697 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-18 12:11:07,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-18 12:11:07,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-11-18 12:11:07,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-18 12:11:07,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2018-11-18 12:11:07,702 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 18 [2018-11-18 12:11:07,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:11:07,702 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2018-11-18 12:11:07,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 12:11:07,702 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2018-11-18 12:11:07,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 12:11:07,703 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:11:07,703 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:11:07,703 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:11:07,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:11:07,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1070618069, now seen corresponding path program 1 times [2018-11-18 12:11:07,703 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:11:07,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:11:07,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:11:07,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:11:07,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:11:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:11:07,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:11:07,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:11:07,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 12:11:07,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 12:11:07,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 12:11:07,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-18 12:11:07,793 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand 9 states. [2018-11-18 12:11:07,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:11:07,874 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2018-11-18 12:11:07,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 12:11:07,875 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-11-18 12:11:07,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:11:07,875 INFO L225 Difference]: With dead ends: 25 [2018-11-18 12:11:07,875 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 12:11:07,880 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-11-18 12:11:07,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 12:11:07,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 12:11:07,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 12:11:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 12:11:07,881 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-11-18 12:11:07,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:11:07,881 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 12:11:07,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 12:11:07,882 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 12:11:07,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 12:11:07,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 12:11:07,997 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:11:07,998 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:11:07,998 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:11:07,998 INFO L425 ceAbstractionStarter]: For program point list_delFINAL(lines 871 874) no Hoare annotation was computed. [2018-11-18 12:11:07,998 INFO L425 ceAbstractionStarter]: For program point list_delEXIT(lines 871 874) no Hoare annotation was computed. [2018-11-18 12:11:07,998 INFO L425 ceAbstractionStarter]: For program point L872(line 872) no Hoare annotation was computed. [2018-11-18 12:11:07,998 INFO L421 ceAbstractionStarter]: At program point list_delENTRY(lines 871 874) the Hoare annotation is: (let ((.cse0 (+ 0 8))) (or (< 0 |~#head~0.offset|) (not (= (select (select |old(#memory_int)| |list_del_#in~entry.base|) .cse0) 1)) (= 1 (select (select |#memory_int| |list_del_#in~entry.base|) .cse0)) (not (= 0 |list_del_#in~entry.offset|)) (< |~#head~0.offset| 0))) [2018-11-18 12:11:07,999 INFO L421 ceAbstractionStarter]: At program point L872-2(line 872) the Hoare annotation is: (or (< 0 |~#head~0.offset|) (not (= (select (select |old(#memory_int)| |list_del_#in~entry.base|) (+ 0 8)) 1)) (not (= 0 |list_del_#in~entry.offset|)) (< |~#head~0.offset| 0)) [2018-11-18 12:11:07,999 INFO L425 ceAbstractionStarter]: For program point L872-3(line 872) no Hoare annotation was computed. [2018-11-18 12:11:07,999 INFO L421 ceAbstractionStarter]: At program point L867-2(line 867) the Hoare annotation is: (or (< 0 |~#head~0.offset|) (not (= 0 |list_add_#in~new.offset|)) (< |~#head~0.offset| 0) (not (= (select (select |old(#memory_int)| |list_add_#in~new.base|) (+ 0 8)) 0))) [2018-11-18 12:11:07,999 INFO L421 ceAbstractionStarter]: At program point list_addENTRY(lines 866 869) the Hoare annotation is: (let ((.cse0 (+ 0 8))) (or (< 0 |~#head~0.offset|) (= 0 (select (select |#memory_int| |list_add_#in~new.base|) .cse0)) (not (= 0 |list_add_#in~new.offset|)) (< |~#head~0.offset| 0) (not (= (select (select |old(#memory_int)| |list_add_#in~new.base|) .cse0) 0)))) [2018-11-18 12:11:07,999 INFO L425 ceAbstractionStarter]: For program point L867-3(line 867) no Hoare annotation was computed. [2018-11-18 12:11:07,999 INFO L425 ceAbstractionStarter]: For program point list_addFINAL(lines 866 869) no Hoare annotation was computed. [2018-11-18 12:11:07,999 INFO L425 ceAbstractionStarter]: For program point list_addEXIT(lines 866 869) no Hoare annotation was computed. [2018-11-18 12:11:07,999 INFO L425 ceAbstractionStarter]: For program point L867(line 867) no Hoare annotation was computed. [2018-11-18 12:11:08,000 INFO L425 ceAbstractionStarter]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2018-11-18 12:11:08,000 INFO L425 ceAbstractionStarter]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2018-11-18 12:11:08,000 INFO L428 ceAbstractionStarter]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2018-11-18 12:11:08,000 INFO L425 ceAbstractionStarter]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2018-11-18 12:11:08,000 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:11:08,000 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= |~#head~0.offset| 0) (<= 0 |~#head~0.offset|)) [2018-11-18 12:11:08,000 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:11:08,000 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:11:08,001 INFO L425 ceAbstractionStarter]: For program point L881(lines 881 886) no Hoare annotation was computed. [2018-11-18 12:11:08,001 INFO L425 ceAbstractionStarter]: For program point L881-1(lines 881 886) no Hoare annotation was computed. [2018-11-18 12:11:08,001 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 878 888) the Hoare annotation is: true [2018-11-18 12:11:08,001 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 878 888) no Hoare annotation was computed. [2018-11-18 12:11:08,001 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 878 888) no Hoare annotation was computed. [2018-11-18 12:11:08,001 INFO L421 ceAbstractionStarter]: At program point L884(line 884) the Hoare annotation is: (or (< 0 |~#head~0.offset|) (and (= 0 (select (select |#memory_int| main_~dev~0.base) (+ |~#head~0.offset| 8))) (= |~#head~0.offset| main_~dev~0.offset)) (< |~#head~0.offset| 0)) [2018-11-18 12:11:08,001 INFO L421 ceAbstractionStarter]: At program point L883(line 883) the Hoare annotation is: (or (< 0 |~#head~0.offset|) (< |~#head~0.offset| 0) (and (= 0 (select (select |#memory_int| main_~dev~0.base) (+ |~#head~0.offset| 8))) (= |~#head~0.offset| main_~dev~0.offset))) [2018-11-18 12:11:08,001 INFO L421 ceAbstractionStarter]: At program point L883-1(line 883) the Hoare annotation is: (or (and (= 1 (select (select |#memory_int| main_~dev~0.base) (+ 0 8))) (= |~#head~0.offset| main_~dev~0.offset)) (< 0 |~#head~0.offset|) (< |~#head~0.offset| 0)) [2018-11-18 12:11:08,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:11:08 BoogieIcfgContainer [2018-11-18 12:11:08,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:11:08,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:11:08,004 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:11:08,004 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:11:08,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:11:06" (3/4) ... [2018-11-18 12:11:08,007 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 12:11:08,011 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 12:11:08,011 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure list_del [2018-11-18 12:11:08,011 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __blast_assert [2018-11-18 12:11:08,011 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure list_add [2018-11-18 12:11:08,011 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 12:11:08,014 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-11-18 12:11:08,014 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-18 12:11:08,014 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 12:11:08,014 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 12:11:08,041 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_55b394f2-4a02-4be0-8761-ae804300f67e/bin-2019/uautomizer/witness.graphml [2018-11-18 12:11:08,041 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:11:08,042 INFO L168 Benchmark]: Toolchain (without parser) took 1778.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 955.5 MB in the beginning and 924.3 MB in the end (delta: 31.2 MB). Peak memory consumption was 173.8 MB. Max. memory is 11.5 GB. [2018-11-18 12:11:08,043 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:11:08,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 955.5 MB in the beginning and 1.1 GB in the end (delta: -173.5 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. [2018-11-18 12:11:08,044 INFO L168 Benchmark]: Boogie Preprocessor took 38.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:11:08,044 INFO L168 Benchmark]: RCFGBuilder took 331.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:11:08,044 INFO L168 Benchmark]: TraceAbstraction took 1051.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 927.0 MB in the end (delta: 155.9 MB). Peak memory consumption was 155.9 MB. Max. memory is 11.5 GB. [2018-11-18 12:11:08,045 INFO L168 Benchmark]: Witness Printer took 37.26 ms. Allocated memory is still 1.2 GB. Free memory was 927.0 MB in the beginning and 924.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:11:08,046 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 315.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 955.5 MB in the beginning and 1.1 GB in the end (delta: -173.5 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 331.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1051.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 927.0 MB in the end (delta: 155.9 MB). Peak memory consumption was 155.9 MB. Max. memory is 11.5 GB. * Witness Printer took 37.26 ms. Allocated memory is still 1.2 GB. Free memory was 927.0 MB in the beginning and 924.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 64 SDslu, 167 SDs, 0 SdLazy, 152 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 21 PreInvPairs, 23 NumberOfFragments, 187 HoareAnnotationTreeSize, 21 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 71 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 6639 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...