./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/fo_test.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/fo_test.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e88937087b9f706d9095d98c766f1175cee3adc1 ...................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/fo_test.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e88937087b9f706d9095d98c766f1175cee3adc1 ..................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:40:52,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:52,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:52,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:52,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:52,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:52,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:52,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:52,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:52,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:52,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:52,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:52,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:52,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:52,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:52,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:52,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:52,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:52,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:52,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:52,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:52,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:52,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:52,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:52,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:52,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:52,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:52,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:52,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:52,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:52,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:52,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:52,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:52,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:52,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:52,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:52,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:52,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:52,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:52,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:52,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:52,961 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:40:52,983 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:52,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:52,984 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:52,985 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:52,985 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:52,985 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:52,985 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:40:52,985 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:52,985 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:52,986 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:40:52,986 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:40:52,986 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:52,986 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:40:52,986 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:40:52,987 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:40:52,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:52,988 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:52,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:52,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:52,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:52,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:52,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:52,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:52,989 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:52,989 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:52,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:52,990 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:52,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:52,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:52,990 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:52,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:52,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:52,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:52,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:52,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:52,991 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:40:52,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:40:52,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:52,992 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:52,992 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:52,992 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e88937087b9f706d9095d98c766f1175cee3adc1 [2020-11-28 07:40:53,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:53,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:53,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:53,273 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:53,274 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:53,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/../../sv-benchmarks/c/ldv-regression/fo_test.i [2020-11-28 07:40:53,347 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/data/f0c6ccffb/0b2f813424cc417eaa63fc363e1badd9/FLAG90fec956e [2020-11-28 07:40:53,857 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:53,857 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/sv-benchmarks/c/ldv-regression/fo_test.i [2020-11-28 07:40:53,878 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/data/f0c6ccffb/0b2f813424cc417eaa63fc363e1badd9/FLAG90fec956e [2020-11-28 07:40:54,147 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/data/f0c6ccffb/0b2f813424cc417eaa63fc363e1badd9 [2020-11-28 07:40:54,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:54,150 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:54,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:54,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:54,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:54,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:54" (1/1) ... [2020-11-28 07:40:54,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fdaf3fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:54, skipping insertion in model container [2020-11-28 07:40:54,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:54" (1/1) ... [2020-11-28 07:40:54,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:54,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:54,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:54,695 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:54,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:54,884 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:54,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:54 WrapperNode [2020-11-28 07:40:54,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:54,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:54,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:54,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:54,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:54" (1/1) ... [2020-11-28 07:40:54,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:54" (1/1) ... [2020-11-28 07:40:54,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:54,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:54,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:54,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:55,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:54" (1/1) ... [2020-11-28 07:40:55,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:54" (1/1) ... [2020-11-28 07:40:55,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:54" (1/1) ... [2020-11-28 07:40:55,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:54" (1/1) ... [2020-11-28 07:40:55,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:54" (1/1) ... [2020-11-28 07:40:55,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:54" (1/1) ... [2020-11-28 07:40:55,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:54" (1/1) ... [2020-11-28 07:40:55,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:55,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:55,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:55,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:55,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/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 [2020-11-28 07:40:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:40:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 07:40:55,165 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-11-28 07:40:55,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:40:55,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:55,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:55,818 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:55,818 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-28 07:40:55,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:55 BoogieIcfgContainer [2020-11-28 07:40:55,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:55,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:55,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:55,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:55,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:54" (1/3) ... [2020-11-28 07:40:55,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4caf1794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:55, skipping insertion in model container [2020-11-28 07:40:55,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:54" (2/3) ... [2020-11-28 07:40:55,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4caf1794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:55, skipping insertion in model container [2020-11-28 07:40:55,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:55" (3/3) ... [2020-11-28 07:40:55,830 INFO L111 eAbstractionObserver]: Analyzing ICFG fo_test.i [2020-11-28 07:40:55,840 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:55,845 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:40:55,857 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:40:55,880 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:55,880 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:40:55,880 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:55,880 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:55,880 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:55,881 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:55,881 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:55,881 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:55,893 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-11-28 07:40:55,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 07:40:55,897 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:55,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-28 07:40:55,898 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:55,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:55,904 INFO L82 PathProgramCache]: Analyzing trace with hash 69770, now seen corresponding path program 1 times [2020-11-28 07:40:55,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:55,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180889081] [2020-11-28 07:40:55,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:40:56,210 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:40:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:40:56,286 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:40:56,321 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:40:56,322 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:40:56,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:40:56,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:56 BoogieIcfgContainer [2020-11-28 07:40:56,350 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:56,351 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:56,351 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:56,351 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:56,352 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:55" (3/4) ... [2020-11-28 07:40:56,355 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:40:56,355 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:56,358 INFO L168 Benchmark]: Toolchain (without parser) took 2205.94 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 60.6 MB in the beginning and 79.5 MB in the end (delta: -18.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:56,358 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 73.4 MB. Free memory is still 38.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:56,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.51 ms. Allocated memory is still 94.4 MB. Free memory was 60.4 MB in the beginning and 36.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:56,362 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.08 ms. Allocated memory is still 94.4 MB. Free memory was 36.6 MB in the beginning and 70.6 MB in the end (delta: -34.0 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:56,363 INFO L168 Benchmark]: Boogie Preprocessor took 72.55 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 70.6 MB in the beginning and 90.6 MB in the end (delta: -20.0 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:56,364 INFO L168 Benchmark]: RCFGBuilder took 761.68 ms. Allocated memory is still 113.2 MB. Free memory was 90.6 MB in the beginning and 49.9 MB in the end (delta: 40.6 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:56,365 INFO L168 Benchmark]: TraceAbstraction took 527.91 ms. Allocated memory is still 113.2 MB. Free memory was 49.9 MB in the beginning and 80.3 MB in the end (delta: -30.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:56,367 INFO L168 Benchmark]: Witness Printer took 4.90 ms. Allocated memory is still 113.2 MB. Free memory was 80.3 MB in the beginning and 79.5 MB in the end (delta: 857.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:56,379 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 73.4 MB. Free memory is still 38.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 733.51 ms. Allocated memory is still 94.4 MB. Free memory was 60.4 MB in the beginning and 36.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.08 ms. Allocated memory is still 94.4 MB. Free memory was 36.6 MB in the beginning and 70.6 MB in the end (delta: -34.0 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.55 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 70.6 MB in the beginning and 90.6 MB in the end (delta: -20.0 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 761.68 ms. Allocated memory is still 113.2 MB. Free memory was 90.6 MB in the beginning and 49.9 MB in the end (delta: 40.6 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 527.91 ms. Allocated memory is still 113.2 MB. Free memory was 49.9 MB in the beginning and 80.3 MB in the end (delta: -30.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.90 ms. Allocated memory is still 113.2 MB. Free memory was 80.3 MB in the beginning and 79.5 MB in the end (delta: 857.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of large string literal at line 992. Possible FailurePath: [L987] int globalState = 0; [L985] return __VERIFIER_nondet_int(); [L1002] int fd = open(file,flags); [L1003] COND FALSE !(fd>0) [L1004] return fd; [L992] int file = l_open("unknown",00); [L993] void* cbuf = (void*) malloc(sizeof(char)*100); [L998] (globalState == 1) ? (0) : __blast_assert () VAL [globalState=0] [L3] __assert_fail("0", "fo_test.i", 3, "reach_error") VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: 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 0.2.0-a4ecdab [2020-11-28 07:40:58,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:58,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:58,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:58,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:58,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:58,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:58,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:58,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:58,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:58,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:58,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:58,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:58,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:58,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:58,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:58,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:58,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:58,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:58,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:58,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:58,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:58,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:58,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:58,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:58,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:58,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:58,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:58,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:58,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:58,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:58,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:58,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:58,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:58,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:58,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:58,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:58,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:58,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:58,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:58,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:58,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:40:59,001 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:59,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:59,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:59,003 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:59,004 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:59,004 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:59,004 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:59,004 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:59,005 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:59,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:59,006 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:59,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:59,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:59,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:59,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:59,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:59,008 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:59,008 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:40:59,009 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:40:59,009 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:59,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:59,010 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:59,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:59,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:59,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:40:59,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:59,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:59,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:59,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:59,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:59,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:59,013 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:40:59,013 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:40:59,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:59,014 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:59,014 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:59,014 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e88937087b9f706d9095d98c766f1175cee3adc1 [2020-11-28 07:40:59,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:59,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:59,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:59,450 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:59,452 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:59,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/../../sv-benchmarks/c/ldv-regression/fo_test.i [2020-11-28 07:40:59,537 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/data/e04dafa00/00e46f20d9f941e583ccaed6fbeeaf61/FLAG64499d3e5 [2020-11-28 07:41:00,145 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:41:00,146 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/sv-benchmarks/c/ldv-regression/fo_test.i [2020-11-28 07:41:00,178 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/data/e04dafa00/00e46f20d9f941e583ccaed6fbeeaf61/FLAG64499d3e5 [2020-11-28 07:41:00,480 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/data/e04dafa00/00e46f20d9f941e583ccaed6fbeeaf61 [2020-11-28 07:41:00,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:41:00,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:41:00,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:00,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:41:00,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:41:00,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:00" (1/1) ... [2020-11-28 07:41:00,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61fcb0a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:00, skipping insertion in model container [2020-11-28 07:41:00,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:00" (1/1) ... [2020-11-28 07:41:00,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:41:00,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:41:01,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:01,110 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:41:01,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:01,349 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:41:01,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:01 WrapperNode [2020-11-28 07:41:01,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:01,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:41:01,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:41:01,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:41:01,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:01" (1/1) ... [2020-11-28 07:41:01,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:01" (1/1) ... [2020-11-28 07:41:01,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:41:01,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:41:01,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:41:01,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:41:01,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:01" (1/1) ... [2020-11-28 07:41:01,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:01" (1/1) ... [2020-11-28 07:41:01,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:01" (1/1) ... [2020-11-28 07:41:01,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:01" (1/1) ... [2020-11-28 07:41:01,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:01" (1/1) ... [2020-11-28 07:41:01,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:01" (1/1) ... [2020-11-28 07:41:01,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:01" (1/1) ... [2020-11-28 07:41:01,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:41:01,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:41:01,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:41:01,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:41:01,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/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 [2020-11-28 07:41:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:41:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:41:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 07:41:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-11-28 07:41:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:41:01,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:41:02,321 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:41:02,321 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-28 07:41:02,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:02 BoogieIcfgContainer [2020-11-28 07:41:02,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:41:02,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:41:02,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:41:02,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:41:02,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:41:00" (1/3) ... [2020-11-28 07:41:02,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a255a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:02, skipping insertion in model container [2020-11-28 07:41:02,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:01" (2/3) ... [2020-11-28 07:41:02,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a255a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:02, skipping insertion in model container [2020-11-28 07:41:02,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:02" (3/3) ... [2020-11-28 07:41:02,333 INFO L111 eAbstractionObserver]: Analyzing ICFG fo_test.i [2020-11-28 07:41:02,344 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:41:02,348 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:41:02,360 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:41:02,396 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:41:02,396 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:41:02,396 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:41:02,397 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:41:02,397 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:41:02,397 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:41:02,397 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:41:02,397 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:41:02,415 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-28 07:41:02,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:41:02,420 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:02,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:02,421 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:02,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:02,427 INFO L82 PathProgramCache]: Analyzing trace with hash 88874922, now seen corresponding path program 1 times [2020-11-28 07:41:02,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:41:02,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217156705] [2020-11-28 07:41:02,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 07:41:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:02,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:41:02,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:02,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:02,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:02,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217156705] [2020-11-28 07:41:02,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:02,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 07:41:02,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912650571] [2020-11-28 07:41:02,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:02,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:41:02,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:02,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:02,877 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-11-28 07:41:02,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:02,913 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-11-28 07:41:02,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:02,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 07:41:02,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:02,923 INFO L225 Difference]: With dead ends: 25 [2020-11-28 07:41:02,924 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 07:41:02,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:02,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 07:41:02,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 07:41:02,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 07:41:02,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2020-11-28 07:41:02,955 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2020-11-28 07:41:02,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:02,955 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2020-11-28 07:41:02,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:02,956 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-11-28 07:41:02,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:41:02,956 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:02,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:03,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:41:03,172 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:41:03,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:03,173 INFO L82 PathProgramCache]: Analyzing trace with hash 90721964, now seen corresponding path program 1 times [2020-11-28 07:41:03,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:41:03,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220234895] [2020-11-28 07:41:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a274c8eb-06f9-4c0b-b8f7-80e1a899ed0e/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 07:41:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:41:03,439 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:41:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:41:03,525 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:41:03,580 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:41:03,580 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:41:03,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:41:03,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:41:03 BoogieIcfgContainer [2020-11-28 07:41:03,830 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:41:03,831 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:41:03,831 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:41:03,831 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:41:03,832 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:02" (3/4) ... [2020-11-28 07:41:03,836 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:41:03,836 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:41:03,838 INFO L168 Benchmark]: Toolchain (without parser) took 3352.50 ms. Allocated memory was 54.5 MB in the beginning and 100.7 MB in the end (delta: 46.1 MB). Free memory was 32.9 MB in the beginning and 65.8 MB in the end (delta: -33.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:03,839 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 54.5 MB. Free memory is still 36.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:03,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 864.85 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 32.6 MB in the beginning and 40.1 MB in the end (delta: -7.5 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:03,840 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.76 ms. Allocated memory is still 73.4 MB. Free memory was 40.1 MB in the beginning and 37.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:03,841 INFO L168 Benchmark]: Boogie Preprocessor took 95.19 ms. Allocated memory is still 73.4 MB. Free memory was 37.7 MB in the beginning and 53.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:03,842 INFO L168 Benchmark]: RCFGBuilder took 788.01 ms. Allocated memory is still 73.4 MB. Free memory was 53.3 MB in the beginning and 44.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:03,843 INFO L168 Benchmark]: TraceAbstraction took 1504.27 ms. Allocated memory was 73.4 MB in the beginning and 100.7 MB in the end (delta: 27.3 MB). Free memory was 43.9 MB in the beginning and 66.7 MB in the end (delta: -22.8 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:03,843 INFO L168 Benchmark]: Witness Printer took 5.22 ms. Allocated memory is still 100.7 MB. Free memory is still 65.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:03,847 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 54.5 MB. Free memory is still 36.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 864.85 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 32.6 MB in the beginning and 40.1 MB in the end (delta: -7.5 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.76 ms. Allocated memory is still 73.4 MB. Free memory was 40.1 MB in the beginning and 37.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 95.19 ms. Allocated memory is still 73.4 MB. Free memory was 37.7 MB in the beginning and 53.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * RCFGBuilder took 788.01 ms. Allocated memory is still 73.4 MB. Free memory was 53.3 MB in the beginning and 44.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1504.27 ms. Allocated memory was 73.4 MB in the beginning and 100.7 MB in the end (delta: 27.3 MB). Free memory was 43.9 MB in the beginning and 66.7 MB in the end (delta: -22.8 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.22 ms. Allocated memory is still 100.7 MB. Free memory is still 65.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of large string literal at line 992. Possible FailurePath: [L987] int globalState = 0; VAL [globalState=0] [L985] return __VERIFIER_nondet_int(); [L1002] int fd = open(file,flags); [L1003] COND FALSE !(fd>0) VAL [globalState=0] [L1004] return fd; VAL [globalState=0] [L992] int file = l_open("unknown",00); [L993] void* cbuf = (void*) malloc(sizeof(char)*100); [L998] (globalState == 1) ? (0) : __blast_assert () VAL [globalState=0] [L3] __assert_fail("0", "fo_test.i", 3, "reach_error") VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 5 SDslu, 6 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 266 SizeOfPredicates, 1 NumberOfNonLiveVariables, 68 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...