./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loops/sum_array_false-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_46c31357-6bf1-43f5-85ce-3e44fae055d9/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_46c31357-6bf1-43f5-85ce-3e44fae055d9/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_46c31357-6bf1-43f5-85ce-3e44fae055d9/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_46c31357-6bf1-43f5-85ce-3e44fae055d9/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/sum_array_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_46c31357-6bf1-43f5-85ce-3e44fae055d9/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_46c31357-6bf1-43f5-85ce-3e44fae055d9/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 d03898b2adab3b021eca92ab7fbddac81b7b0464 ......................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 14:09:44,719 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 14:09:44,720 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 14:09:44,727 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 14:09:44,727 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 14:09:44,728 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 14:09:44,728 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 14:09:44,730 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 14:09:44,731 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 14:09:44,731 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 14:09:44,732 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 14:09:44,732 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 14:09:44,733 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 14:09:44,733 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 14:09:44,734 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 14:09:44,734 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 14:09:44,735 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 14:09:44,736 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 14:09:44,737 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 14:09:44,739 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 14:09:44,739 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 14:09:44,740 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 14:09:44,742 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 14:09:44,742 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 14:09:44,742 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 14:09:44,743 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 14:09:44,743 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 14:09:44,744 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 14:09:44,745 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 14:09:44,745 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 14:09:44,745 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 14:09:44,746 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 14:09:44,746 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 14:09:44,746 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 14:09:44,746 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 14:09:44,747 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 14:09:44,747 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_46c31357-6bf1-43f5-85ce-3e44fae055d9/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 14:09:44,753 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 14:09:44,754 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 14:09:44,754 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 14:09:44,754 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 14:09:44,755 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 14:09:44,755 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 14:09:44,755 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 14:09:44,755 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 14:09:44,755 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 14:09:44,755 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 14:09:44,755 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 14:09:44,756 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 14:09:44,756 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 14:09:44,756 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 14:09:44,756 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 14:09:44,756 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 14:09:44,756 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 14:09:44,756 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 14:09:44,756 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 14:09:44,757 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 14:09:44,757 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 14:09:44,757 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 14:09:44,757 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 14:09:44,757 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 14:09:44,757 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 14:09:44,758 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 14:09:44,758 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 14:09:44,758 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 14:09:44,758 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 14:09:44,758 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 14:09:44,758 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_46c31357-6bf1-43f5-85ce-3e44fae055d9/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 -> d03898b2adab3b021eca92ab7fbddac81b7b0464 [2018-11-18 14:09:44,784 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 14:09:44,793 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 14:09:44,795 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 14:09:44,797 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 14:09:44,797 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 14:09:44,797 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_46c31357-6bf1-43f5-85ce-3e44fae055d9/bin-2019/uautomizer/../../sv-benchmarks/c/loops/sum_array_false-unreach-call.i [2018-11-18 14:09:44,842 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_46c31357-6bf1-43f5-85ce-3e44fae055d9/bin-2019/uautomizer/data/556ddaa44/ada41b852cac446f920aaa5015e9f6c0/FLAG4a974d05e [2018-11-18 14:09:45,168 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 14:09:45,168 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_46c31357-6bf1-43f5-85ce-3e44fae055d9/sv-benchmarks/c/loops/sum_array_false-unreach-call.i [2018-11-18 14:09:45,173 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_46c31357-6bf1-43f5-85ce-3e44fae055d9/bin-2019/uautomizer/data/556ddaa44/ada41b852cac446f920aaa5015e9f6c0/FLAG4a974d05e [2018-11-18 14:09:45,603 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_46c31357-6bf1-43f5-85ce-3e44fae055d9/bin-2019/uautomizer/data/556ddaa44/ada41b852cac446f920aaa5015e9f6c0 [2018-11-18 14:09:45,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 14:09:45,606 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 14:09:45,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 14:09:45,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 14:09:45,609 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 14:09:45,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:09:45" (1/1) ... [2018-11-18 14:09:45,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f35076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:45, skipping insertion in model container [2018-11-18 14:09:45,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:09:45" (1/1) ... [2018-11-18 14:09:45,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 14:09:45,630 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 14:09:45,739 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:09:45,742 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 14:09:45,757 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:09:45,768 INFO L195 MainTranslator]: Completed translation [2018-11-18 14:09:45,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:45 WrapperNode [2018-11-18 14:09:45,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 14:09:45,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 14:09:45,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 14:09:45,769 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 14:09:45,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:45" (1/1) ... [2018-11-18 14:09:45,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:45" (1/1) ... [2018-11-18 14:09:45,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:45" (1/1) ... [2018-11-18 14:09:45,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:45" (1/1) ... [2018-11-18 14:09:45,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:45" (1/1) ... [2018-11-18 14:09:45,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:45" (1/1) ... [2018-11-18 14:09:45,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:45" (1/1) ... [2018-11-18 14:09:45,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 14:09:45,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 14:09:45,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 14:09:45,797 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 14:09:45,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_46c31357-6bf1-43f5-85ce-3e44fae055d9/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 14:09:45,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 14:09:45,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 14:09:45,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 14:09:45,873 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 14:09:45,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 14:09:45,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 14:09:45,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 14:09:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2018-11-18 14:09:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 14:09:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 14:09:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 14:09:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 14:09:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 14:09:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 14:09:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 14:09:45,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 14:09:46,033 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 14:09:46,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:09:46 BoogieIcfgContainer [2018-11-18 14:09:46,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 14:09:46,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 14:09:46,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 14:09:46,036 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 14:09:46,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:09:45" (1/3) ... [2018-11-18 14:09:46,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21873e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:09:46, skipping insertion in model container [2018-11-18 14:09:46,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:45" (2/3) ... [2018-11-18 14:09:46,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21873e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:09:46, skipping insertion in model container [2018-11-18 14:09:46,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:09:46" (3/3) ... [2018-11-18 14:09:46,038 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_array_false-unreach-call.i [2018-11-18 14:09:46,046 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 14:09:46,054 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 14:09:46,063 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 14:09:46,084 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 14:09:46,084 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 14:09:46,084 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 14:09:46,084 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 14:09:46,084 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 14:09:46,085 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 14:09:46,085 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 14:09:46,085 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 14:09:46,085 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 14:09:46,097 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-11-18 14:09:46,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 14:09:46,102 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:09:46,102 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 14:09:46,104 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:09:46,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:09:46,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1430000846, now seen corresponding path program 1 times [2018-11-18 14:09:46,108 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:09:46,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:09:46,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:09:46,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:09:46,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:09:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:09:46,209 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 14:09:46,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:09:46,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 14:09:46,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 14:09:46,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 14:09:46,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 14:09:46,222 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2018-11-18 14:09:46,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:09:46,237 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2018-11-18 14:09:46,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 14:09:46,238 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-11-18 14:09:46,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:09:46,242 INFO L225 Difference]: With dead ends: 59 [2018-11-18 14:09:46,242 INFO L226 Difference]: Without dead ends: 29 [2018-11-18 14:09:46,245 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 14:09:46,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-18 14:09:46,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-11-18 14:09:46,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-18 14:09:46,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2018-11-18 14:09:46,267 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2018-11-18 14:09:46,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:09:46,267 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2018-11-18 14:09:46,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 14:09:46,268 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2018-11-18 14:09:46,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 14:09:46,268 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:09:46,269 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:09:46,269 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:09:46,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:09:46,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1047758436, now seen corresponding path program 1 times [2018-11-18 14:09:46,269 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:09:46,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:09:46,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:09:46,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:09:46,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:09:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:09:46,353 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 14:09:46,353 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:09:46,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 14:09:46,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 14:09:46,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 14:09:46,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 14:09:46,355 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 4 states. [2018-11-18 14:09:46,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:09:46,444 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2018-11-18 14:09:46,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 14:09:46,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-11-18 14:09:46,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:09:46,446 INFO L225 Difference]: With dead ends: 71 [2018-11-18 14:09:46,446 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 14:09:46,447 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 14:09:46,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 14:09:46,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2018-11-18 14:09:46,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 14:09:46,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-11-18 14:09:46,454 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 21 [2018-11-18 14:09:46,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:09:46,454 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-11-18 14:09:46,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 14:09:46,454 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-11-18 14:09:46,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 14:09:46,455 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:09:46,455 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-18 14:09:46,455 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:09:46,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:09:46,456 INFO L82 PathProgramCache]: Analyzing trace with hash -147651490, now seen corresponding path program 1 times [2018-11-18 14:09:46,456 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:09:46,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:09:46,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:09:46,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:09:46,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:09:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:09:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:09:46,595 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 14:09:46,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 02:09:46 BoogieIcfgContainer [2018-11-18 14:09:46,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 14:09:46,622 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 14:09:46,622 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 14:09:46,622 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 14:09:46,622 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:09:46" (3/4) ... [2018-11-18 14:09:46,624 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 14:09:46,662 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_46c31357-6bf1-43f5-85ce-3e44fae055d9/bin-2019/uautomizer/witness.graphml [2018-11-18 14:09:46,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 14:09:46,663 INFO L168 Benchmark]: Toolchain (without parser) took 1056.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 958.2 MB in the beginning and 1.1 GB in the end (delta: -96.9 MB). Peak memory consumption was 39.5 MB. Max. memory is 11.5 GB. [2018-11-18 14:09:46,664 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:09:46,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 162.32 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:09:46,665 INFO L168 Benchmark]: Boogie Preprocessor took 27.13 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:09:46,665 INFO L168 Benchmark]: RCFGBuilder took 236.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -166.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 14:09:46,665 INFO L168 Benchmark]: TraceAbstraction took 587.82 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: 53.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:09:46,666 INFO L168 Benchmark]: Witness Printer took 40.17 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 14:09:46,668 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 162.32 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.13 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 236.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -166.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 587.82 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: 53.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 11.5 GB. * Witness Printer took 40.17 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. * 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: [L14] unsigned int M = __VERIFIER_nondet_uint(); [L15] FCALL int A[M], B[M], C[M]; [L16] unsigned int i; [L18] i=0 VAL [A={10:0}, B={12:0}, C={9:0}, i=0, M=1] [L18] COND TRUE i