./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invariants/bin-suffix-5_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invariants/bin-suffix-5_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f5bdb078d6ad5b90a3e716506f89d68a310f749 ............................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invariants/bin-suffix-5_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f5bdb078d6ad5b90a3e716506f89d68a310f749 ................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 17:14:20,752 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 17:14:20,753 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 17:14:20,760 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 17:14:20,760 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 17:14:20,760 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 17:14:20,761 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 17:14:20,762 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 17:14:20,762 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 17:14:20,763 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 17:14:20,763 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 17:14:20,763 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 17:14:20,764 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 17:14:20,764 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 17:14:20,765 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 17:14:20,765 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 17:14:20,766 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 17:14:20,766 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 17:14:20,767 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 17:14:20,768 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 17:14:20,769 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 17:14:20,769 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 17:14:20,770 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 17:14:20,770 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 17:14:20,771 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 17:14:20,771 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 17:14:20,771 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 17:14:20,772 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 17:14:20,772 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 17:14:20,773 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 17:14:20,773 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 17:14:20,773 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 17:14:20,773 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 17:14:20,773 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 17:14:20,774 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 17:14:20,774 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 17:14:20,774 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-08 17:14:20,782 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 17:14:20,782 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 17:14:20,782 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 17:14:20,783 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 17:14:20,783 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 17:14:20,783 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 17:14:20,783 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 17:14:20,783 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 17:14:20,783 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 17:14:20,783 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 17:14:20,783 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 17:14:20,783 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 17:14:20,783 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 17:14:20,784 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 17:14:20,784 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 17:14:20,784 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 17:14:20,784 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 17:14:20,784 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 17:14:20,784 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 17:14:20,784 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 17:14:20,784 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 17:14:20,784 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 17:14:20,784 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 17:14:20,785 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 17:14:20,785 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 17:14:20,785 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 17:14:20,785 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 17:14:20,785 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 17:14:20,785 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 17:14:20,785 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 17:14:20,785 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 17:14:20,785 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 17:14:20,785 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 17:14:20,785 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 17:14:20,786 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 17:14:20,786 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-08 17:14:20,786 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f5bdb078d6ad5b90a3e716506f89d68a310f749 [2018-12-08 17:14:20,804 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 17:14:20,813 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 17:14:20,816 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 17:14:20,817 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 17:14:20,817 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 17:14:20,818 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/../../sv-benchmarks/c/loop-invariants/bin-suffix-5_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-12-08 17:14:20,860 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/data/d9bd8f1fc/d1bad924ba4c405a819e291a69e6fe81/FLAGbbbb3e7e4 [2018-12-08 17:14:21,202 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 17:14:21,203 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/sv-benchmarks/c/loop-invariants/bin-suffix-5_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-12-08 17:14:21,207 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/data/d9bd8f1fc/d1bad924ba4c405a819e291a69e6fe81/FLAGbbbb3e7e4 [2018-12-08 17:14:21,598 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/data/d9bd8f1fc/d1bad924ba4c405a819e291a69e6fe81 [2018-12-08 17:14:21,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 17:14:21,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 17:14:21,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 17:14:21,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 17:14:21,604 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 17:14:21,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 05:14:21" (1/1) ... [2018-12-08 17:14:21,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54724d61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:21, skipping insertion in model container [2018-12-08 17:14:21,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 05:14:21" (1/1) ... [2018-12-08 17:14:21,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 17:14:21,622 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 17:14:21,712 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 17:14:21,714 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 17:14:21,722 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 17:14:21,730 INFO L195 MainTranslator]: Completed translation [2018-12-08 17:14:21,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:21 WrapperNode [2018-12-08 17:14:21,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 17:14:21,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 17:14:21,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 17:14:21,731 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 17:14:21,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:21" (1/1) ... [2018-12-08 17:14:21,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:21" (1/1) ... [2018-12-08 17:14:21,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 17:14:21,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 17:14:21,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 17:14:21,742 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 17:14:21,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:21" (1/1) ... [2018-12-08 17:14:21,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:21" (1/1) ... [2018-12-08 17:14:21,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:21" (1/1) ... [2018-12-08 17:14:21,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:21" (1/1) ... [2018-12-08 17:14:21,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:21" (1/1) ... [2018-12-08 17:14:21,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:21" (1/1) ... [2018-12-08 17:14:21,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:21" (1/1) ... [2018-12-08 17:14:21,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 17:14:21,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 17:14:21,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 17:14:21,781 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 17:14:21,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 17:14:21,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 17:14:21,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 17:14:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 17:14:21,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 17:14:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 17:14:21,812 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 17:14:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-08 17:14:21,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-08 17:14:21,889 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 17:14:21,890 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-08 17:14:21,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:14:21 BoogieIcfgContainer [2018-12-08 17:14:21,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 17:14:21,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 17:14:21,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 17:14:21,892 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 17:14:21,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 05:14:21" (1/3) ... [2018-12-08 17:14:21,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed57845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 05:14:21, skipping insertion in model container [2018-12-08 17:14:21,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:21" (2/3) ... [2018-12-08 17:14:21,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed57845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 05:14:21, skipping insertion in model container [2018-12-08 17:14:21,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:14:21" (3/3) ... [2018-12-08 17:14:21,894 INFO L112 eAbstractionObserver]: Analyzing ICFG bin-suffix-5_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-12-08 17:14:21,899 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 17:14:21,903 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 17:14:21,911 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 17:14:21,928 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 17:14:21,928 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 17:14:21,928 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 17:14:21,928 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 17:14:21,928 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 17:14:21,928 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 17:14:21,928 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 17:14:21,928 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 17:14:21,937 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-12-08 17:14:21,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-08 17:14:21,941 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:14:21,941 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:14:21,942 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:14:21,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:14:21,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-12-08 17:14:21,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 17:14:21,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:14:21,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:14:21,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:14:21,974 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 17:14:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:14:22,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:14:22,004 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 17:14:22,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 17:14:22,004 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 17:14:22,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 17:14:22,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 17:14:22,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 17:14:22,015 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-12-08 17:14:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:14:22,027 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-12-08 17:14:22,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 17:14:22,028 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-08 17:14:22,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:14:22,032 INFO L225 Difference]: With dead ends: 31 [2018-12-08 17:14:22,032 INFO L226 Difference]: Without dead ends: 12 [2018-12-08 17:14:22,034 INFO L631 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 [2018-12-08 17:14:22,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-08 17:14:22,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-08 17:14:22,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-08 17:14:22,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-08 17:14:22,053 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-08 17:14:22,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:14:22,053 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-08 17:14:22,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 17:14:22,053 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-08 17:14:22,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-08 17:14:22,053 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:14:22,053 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:14:22,054 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:14:22,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:14:22,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1890620952, now seen corresponding path program 1 times [2018-12-08 17:14:22,054 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 17:14:22,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:14:22,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:14:22,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:14:22,055 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 17:14:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:14:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:14:22,079 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 17:14:22,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 05:14:22 BoogieIcfgContainer [2018-12-08 17:14:22,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 17:14:22,092 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 17:14:22,092 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 17:14:22,092 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 17:14:22,092 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:14:21" (3/4) ... [2018-12-08 17:14:22,094 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 17:14:22,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 17:14:22,095 INFO L168 Benchmark]: Toolchain (without parser) took 494.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -130.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:14:22,096 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:14:22,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 128.54 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 938.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 17:14:22,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 10.99 ms. Allocated memory is still 1.0 GB. Free memory is still 938.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:14:22,096 INFO L168 Benchmark]: Boogie Preprocessor took 39.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 938.9 MB in the beginning and 1.1 GB in the end (delta: -182.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2018-12-08 17:14:22,097 INFO L168 Benchmark]: RCFGBuilder took 109.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-12-08 17:14:22,097 INFO L168 Benchmark]: TraceAbstraction took 201.21 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. [2018-12-08 17:14:22,097 INFO L168 Benchmark]: Witness Printer took 2.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:14:22,099 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 128.54 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 938.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 10.99 ms. Allocated memory is still 1.0 GB. Free memory is still 938.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 938.9 MB in the beginning and 1.1 GB in the end (delta: -182.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 109.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 201.21 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. * Witness Printer took 2.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 14. Possible FailurePath: [L10] unsigned int x = 5; VAL [x=5] [L11] COND FALSE !(__VERIFIER_nondet_int()) [L14] CALL __VERIFIER_assert((x & 5) == 5) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-08 17:14:23,344 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 17:14:23,345 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 17:14:23,350 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 17:14:23,351 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 17:14:23,351 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 17:14:23,352 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 17:14:23,353 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 17:14:23,353 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 17:14:23,354 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 17:14:23,354 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 17:14:23,354 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 17:14:23,355 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 17:14:23,355 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 17:14:23,356 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 17:14:23,356 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 17:14:23,357 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 17:14:23,358 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 17:14:23,358 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 17:14:23,359 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 17:14:23,360 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 17:14:23,360 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 17:14:23,361 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 17:14:23,362 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 17:14:23,362 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 17:14:23,362 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 17:14:23,363 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 17:14:23,363 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 17:14:23,364 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 17:14:23,364 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 17:14:23,364 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 17:14:23,365 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 17:14:23,365 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 17:14:23,365 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 17:14:23,365 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 17:14:23,366 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 17:14:23,366 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-08 17:14:23,373 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 17:14:23,373 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 17:14:23,374 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 17:14:23,374 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 17:14:23,374 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 17:14:23,374 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 17:14:23,374 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 17:14:23,374 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 17:14:23,375 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 17:14:23,375 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 17:14:23,375 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 17:14:23,375 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 17:14:23,375 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 17:14:23,376 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 17:14:23,376 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 17:14:23,376 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 17:14:23,376 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 17:14:23,376 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-08 17:14:23,376 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-08 17:14:23,376 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 17:14:23,376 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 17:14:23,377 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 17:14:23,377 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 17:14:23,377 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 17:14:23,377 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 17:14:23,377 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 17:14:23,377 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 17:14:23,377 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 17:14:23,377 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 17:14:23,378 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 17:14:23,378 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 17:14:23,378 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-08 17:14:23,378 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 17:14:23,378 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-08 17:14:23,378 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-08 17:14:23,378 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_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f5bdb078d6ad5b90a3e716506f89d68a310f749 [2018-12-08 17:14:23,396 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 17:14:23,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 17:14:23,405 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 17:14:23,406 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 17:14:23,406 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 17:14:23,406 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/../../sv-benchmarks/c/loop-invariants/bin-suffix-5_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-12-08 17:14:23,441 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/data/06872bb62/6843f545f66145c5a8eda41238f02ce9/FLAG9a1dd74e3 [2018-12-08 17:14:23,849 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 17:14:23,850 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/sv-benchmarks/c/loop-invariants/bin-suffix-5_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-12-08 17:14:23,853 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/data/06872bb62/6843f545f66145c5a8eda41238f02ce9/FLAG9a1dd74e3 [2018-12-08 17:14:23,861 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/data/06872bb62/6843f545f66145c5a8eda41238f02ce9 [2018-12-08 17:14:23,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 17:14:23,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 17:14:23,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 17:14:23,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 17:14:23,866 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 17:14:23,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 05:14:23" (1/1) ... [2018-12-08 17:14:23,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bfa0d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:23, skipping insertion in model container [2018-12-08 17:14:23,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 05:14:23" (1/1) ... [2018-12-08 17:14:23,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 17:14:23,881 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 17:14:23,964 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 17:14:23,966 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 17:14:23,974 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 17:14:23,982 INFO L195 MainTranslator]: Completed translation [2018-12-08 17:14:23,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:23 WrapperNode [2018-12-08 17:14:23,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 17:14:23,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 17:14:23,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 17:14:23,983 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 17:14:23,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:23" (1/1) ... [2018-12-08 17:14:23,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:23" (1/1) ... [2018-12-08 17:14:23,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 17:14:23,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 17:14:23,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 17:14:23,995 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 17:14:24,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:23" (1/1) ... [2018-12-08 17:14:24,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:23" (1/1) ... [2018-12-08 17:14:24,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:23" (1/1) ... [2018-12-08 17:14:24,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:23" (1/1) ... [2018-12-08 17:14:24,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:23" (1/1) ... [2018-12-08 17:14:24,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:23" (1/1) ... [2018-12-08 17:14:24,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:23" (1/1) ... [2018-12-08 17:14:24,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 17:14:24,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 17:14:24,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 17:14:24,008 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 17:14:24,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 17:14:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 17:14:24,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 17:14:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 17:14:24,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 17:14:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 17:14:24,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 17:14:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-08 17:14:24,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-08 17:14:24,153 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 17:14:24,154 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-08 17:14:24,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:14:24 BoogieIcfgContainer [2018-12-08 17:14:24,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 17:14:24,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 17:14:24,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 17:14:24,156 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 17:14:24,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 05:14:23" (1/3) ... [2018-12-08 17:14:24,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5acbc068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 05:14:24, skipping insertion in model container [2018-12-08 17:14:24,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:14:23" (2/3) ... [2018-12-08 17:14:24,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5acbc068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 05:14:24, skipping insertion in model container [2018-12-08 17:14:24,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:14:24" (3/3) ... [2018-12-08 17:14:24,158 INFO L112 eAbstractionObserver]: Analyzing ICFG bin-suffix-5_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-12-08 17:14:24,163 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 17:14:24,167 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 17:14:24,175 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 17:14:24,193 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 17:14:24,193 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 17:14:24,193 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 17:14:24,194 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 17:14:24,194 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 17:14:24,194 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 17:14:24,194 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 17:14:24,194 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 17:14:24,194 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 17:14:24,208 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-08 17:14:24,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-08 17:14:24,212 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:14:24,212 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:14:24,214 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:14:24,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:14:24,217 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-12-08 17:14:24,219 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 17:14:24,219 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 17:14:24,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:14:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:14:24,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:14:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:14:24,293 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 17:14:24,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 17:14:24,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 17:14:24,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 17:14:24,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 17:14:24,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 17:14:24,307 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2018-12-08 17:14:24,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:14:24,353 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2018-12-08 17:14:24,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 17:14:24,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-12-08 17:14:24,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:14:24,360 INFO L225 Difference]: With dead ends: 39 [2018-12-08 17:14:24,360 INFO L226 Difference]: Without dead ends: 12 [2018-12-08 17:14:24,363 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-08 17:14:24,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-08 17:14:24,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-08 17:14:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-08 17:14:24,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-08 17:14:24,388 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-08 17:14:24,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:14:24,388 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-08 17:14:24,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 17:14:24,388 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-08 17:14:24,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-08 17:14:24,389 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:14:24,389 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:14:24,389 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:14:24,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:14:24,390 INFO L82 PathProgramCache]: Analyzing trace with hash -429188558, now seen corresponding path program 1 times [2018-12-08 17:14:24,390 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-08 17:14:24,390 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-08 17:14:24,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:14:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:14:24,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:14:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:14:24,442 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 17:14:24,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-08 17:14:24,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 17:14:24,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2018-12-08 17:14:24,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-08 17:14:24,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-08 17:14:24,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-12-08 17:14:24,489 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 9 states. [2018-12-08 17:14:24,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:14:24,512 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2018-12-08 17:14:24,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-08 17:14:24,513 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2018-12-08 17:14:24,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:14:24,513 INFO L225 Difference]: With dead ends: 14 [2018-12-08 17:14:24,513 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 17:14:24,514 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-12-08 17:14:24,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 17:14:24,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 17:14:24,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 17:14:24,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 17:14:24,515 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-12-08 17:14:24,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:14:24,515 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 17:14:24,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-08 17:14:24,515 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 17:14:24,515 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 17:14:24,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-08 17:14:24,569 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-08 17:14:24,569 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-08 17:14:24,569 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-08 17:14:24,569 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-08 17:14:24,569 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-08 17:14:24,569 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-08 17:14:24,570 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 9 16) the Hoare annotation is: true [2018-12-08 17:14:24,570 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 9 16) no Hoare annotation was computed. [2018-12-08 17:14:24,570 INFO L448 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-12-08 17:14:24,570 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 9 16) no Hoare annotation was computed. [2018-12-08 17:14:24,570 INFO L444 ceAbstractionStarter]: At program point L11-2(lines 11 13) the Hoare annotation is: (= (bvadd (bvand (_ bv5 32) main_~x~0) (_ bv4294967291 32)) (_ bv0 32)) [2018-12-08 17:14:24,570 INFO L444 ceAbstractionStarter]: At program point L11-3(lines 11 13) the Hoare annotation is: (= (bvadd (bvand (_ bv5 32) main_~x~0) (_ bv4294967291 32)) (_ bv0 32)) [2018-12-08 17:14:24,570 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-12-08 17:14:24,570 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-12-08 17:14:24,570 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-12-08 17:14:24,571 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-12-08 17:14:24,571 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-12-08 17:14:24,571 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-12-08 17:14:24,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 05:14:24 BoogieIcfgContainer [2018-12-08 17:14:24,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 17:14:24,579 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 17:14:24,579 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 17:14:24,580 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 17:14:24,580 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:14:24" (3/4) ... [2018-12-08 17:14:24,582 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 17:14:24,586 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 17:14:24,586 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 17:14:24,586 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-08 17:14:24,589 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-08 17:14:24,589 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-08 17:14:24,589 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 17:14:24,614 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_226a3d81-f8e5-4db7-bc39-fe80dc7db134/bin-2019/utaipan/witness.graphml [2018-12-08 17:14:24,614 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 17:14:24,615 INFO L168 Benchmark]: Toolchain (without parser) took 751.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -110.4 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. [2018-12-08 17:14:24,615 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:14:24,616 INFO L168 Benchmark]: CACSL2BoogieTranslator took 118.93 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 17:14:24,616 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.77 ms. Allocated memory is still 1.0 GB. Free memory is still 934.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:14:24,616 INFO L168 Benchmark]: Boogie Preprocessor took 12.94 ms. Allocated memory is still 1.0 GB. Free memory is still 934.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:14:24,617 INFO L168 Benchmark]: RCFGBuilder took 145.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -186.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2018-12-08 17:14:24,617 INFO L168 Benchmark]: TraceAbstraction took 424.79 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: 58.0 MB). Peak memory consumption was 58.0 MB. Max. memory is 11.5 GB. [2018-12-08 17:14:24,617 INFO L168 Benchmark]: Witness Printer took 34.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-08 17:14:24,620 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 118.93 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.77 ms. Allocated memory is still 1.0 GB. Free memory is still 934.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.94 ms. Allocated memory is still 1.0 GB. Free memory is still 934.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 145.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -186.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 424.79 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: 58.0 MB). Peak memory consumption was 58.0 MB. Max. memory is 11.5 GB. * Witness Printer took 34.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ~bvadd64(~bvand32(5bv32, x), 4294967291bv32) == 0bv32 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 8 SDslu, 69 SDs, 0 SdLazy, 30 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 19 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 22 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 865 SizeOfPredicates, 4 NumberOfNonLiveVariables, 38 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...