./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 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/fo_test.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8 --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_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/fo_test.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8 --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 0.2.1-dev-4e77c04 [2021-10-13 08:07:24,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:07:24,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:07:24,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:07:24,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:07:24,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:07:24,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:07:24,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:07:24,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:07:24,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:07:24,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:07:24,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:07:24,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:07:24,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:07:24,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:07:24,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:07:24,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:07:24,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:07:24,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:07:24,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:07:24,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:07:24,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:07:24,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:07:24,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:07:24,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:07:24,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:07:24,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:07:24,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:07:24,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:07:24,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:07:24,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:07:24,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:07:24,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:07:25,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:07:25,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:07:25,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:07:25,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:07:25,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:07:25,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:07:25,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:07:25,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:07:25,009 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 08:07:25,066 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:07:25,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:07:25,068 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:07:25,068 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:07:25,069 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:07:25,069 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:07:25,069 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:07:25,070 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:07:25,077 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:07:25,078 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:07:25,079 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:07:25,080 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:07:25,080 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:07:25,080 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:07:25,081 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:07:25,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:07:25,082 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:07:25,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:07:25,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:07:25,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:07:25,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:07:25,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:07:25,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:07:25,084 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:07:25,084 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:07:25,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:07:25,085 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:07:25,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:07:25,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:07:25,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:07:25,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:07:25,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:07:25,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:07:25,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:07:25,090 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:07:25,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:07:25,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:07:25,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:07:25,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:07:25,092 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_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e88937087b9f706d9095d98c766f1175cee3adc1 [2021-10-13 08:07:25,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:07:25,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:07:25,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:07:25,442 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:07:25,443 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:07:25,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ldv-regression/fo_test.i [2021-10-13 08:07:25,533 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/data/4d5f5ecd0/8a207ec0b3d94315beb7c35675b3f79d/FLAGc458f61b9 [2021-10-13 08:07:26,209 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:07:26,210 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/sv-benchmarks/c/ldv-regression/fo_test.i [2021-10-13 08:07:26,245 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/data/4d5f5ecd0/8a207ec0b3d94315beb7c35675b3f79d/FLAGc458f61b9 [2021-10-13 08:07:26,496 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/data/4d5f5ecd0/8a207ec0b3d94315beb7c35675b3f79d [2021-10-13 08:07:26,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:07:26,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:07:26,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:07:26,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:07:26,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:07:26,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:07:26" (1/1) ... [2021-10-13 08:07:26,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eaf0b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:26, skipping insertion in model container [2021-10-13 08:07:26,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:07:26" (1/1) ... [2021-10-13 08:07:26,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:07:26,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:07:27,162 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-10-13 08:07:27,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:07:27,198 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:07:27,272 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-10-13 08:07:27,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:07:27,366 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:07:27,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:27 WrapperNode [2021-10-13 08:07:27,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:07:27,368 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:07:27,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:07:27,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:07:27,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:27" (1/1) ... [2021-10-13 08:07:27,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:27" (1/1) ... [2021-10-13 08:07:27,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:07:27,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:07:27,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:07:27,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:07:27,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:27" (1/1) ... [2021-10-13 08:07:27,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:27" (1/1) ... [2021-10-13 08:07:27,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:27" (1/1) ... [2021-10-13 08:07:27,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:27" (1/1) ... [2021-10-13 08:07:27,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:27" (1/1) ... [2021-10-13 08:07:27,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:27" (1/1) ... [2021-10-13 08:07:27,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:27" (1/1) ... [2021-10-13 08:07:27,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:07:27,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:07:27,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:07:27,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:07:27,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:27" (1/1) ... [2021-10-13 08:07:27,589 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:07:27,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:07:27,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:07:27,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:07:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:07:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 08:07:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-10-13 08:07:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 08:07:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:07:27,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:07:28,484 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:07:28,485 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-13 08:07:28,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:28 BoogieIcfgContainer [2021-10-13 08:07:28,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:07:28,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:07:28,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:07:28,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:07:28,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:07:26" (1/3) ... [2021-10-13 08:07:28,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4236a2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:07:28, skipping insertion in model container [2021-10-13 08:07:28,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:27" (2/3) ... [2021-10-13 08:07:28,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4236a2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:07:28, skipping insertion in model container [2021-10-13 08:07:28,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:28" (3/3) ... [2021-10-13 08:07:28,498 INFO L111 eAbstractionObserver]: Analyzing ICFG fo_test.i [2021-10-13 08:07:28,505 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:07:28,506 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 08:07:28,564 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:07:28,574 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 08:07:28,578 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 08:07:28,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:28,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 08:07:28,602 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:07:28,603 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 08:07:28,603 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:07:28,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:07:28,621 INFO L82 PathProgramCache]: Analyzing trace with hash 66887, now seen corresponding path program 1 times [2021-10-13 08:07:28,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:07:28,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660361522] [2021-10-13 08:07:28,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:07:28,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:07:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:07:28,950 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 08:07:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:07:29,053 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 08:07:29,056 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 08:07:29,057 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:29,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 08:07:29,068 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:07:29,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:07:29 BoogieIcfgContainer [2021-10-13 08:07:29,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:07:29,095 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:07:29,095 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:07:29,096 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:07:29,096 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:28" (3/4) ... [2021-10-13 08:07:29,100 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 08:07:29,100 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:07:29,103 INFO L168 Benchmark]: Toolchain (without parser) took 2597.93 ms. Allocated memory is still 96.5 MB. Free memory was 64.6 MB in the beginning and 50.7 MB in the end (delta: 13.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:29,104 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 96.5 MB. Free memory is still 61.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:07:29,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 857.45 ms. Allocated memory is still 96.5 MB. Free memory was 64.4 MB in the beginning and 59.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:29,106 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.45 ms. Allocated memory is still 96.5 MB. Free memory was 59.8 MB in the beginning and 57.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:29,106 INFO L168 Benchmark]: Boogie Preprocessor took 88.02 ms. Allocated memory is still 96.5 MB. Free memory was 57.4 MB in the beginning and 55.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:29,107 INFO L168 Benchmark]: RCFGBuilder took 925.53 ms. Allocated memory is still 96.5 MB. Free memory was 55.6 MB in the beginning and 70.1 MB in the end (delta: -14.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:29,108 INFO L168 Benchmark]: TraceAbstraction took 604.44 ms. Allocated memory is still 96.5 MB. Free memory was 70.0 MB in the beginning and 51.1 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:29,109 INFO L168 Benchmark]: Witness Printer took 5.46 ms. Allocated memory is still 96.5 MB. Free memory was 51.1 MB in the beginning and 50.7 MB in the end (delta: 455.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:29,114 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 96.5 MB. Free memory is still 61.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 857.45 ms. Allocated memory is still 96.5 MB. Free memory was 64.4 MB in the beginning and 59.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 104.45 ms. Allocated memory is still 96.5 MB. Free memory was 59.8 MB in the beginning and 57.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 88.02 ms. Allocated memory is still 96.5 MB. Free memory was 57.4 MB in the beginning and 55.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 925.53 ms. Allocated memory is still 96.5 MB. Free memory was 55.6 MB in the beginning and 70.1 MB in the end (delta: -14.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 604.44 ms. Allocated memory is still 96.5 MB. Free memory was 70.0 MB in the beginning and 51.1 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.46 ms. Allocated memory is still 96.5 MB. Free memory was 51.1 MB in the beginning and 50.7 MB in the end (delta: 455.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 980]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is 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] [L980] reach_error() VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 504.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 11.2ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.7ms SsaConstructionTime, 108.8ms SatisfiabilityAnalysisTime, 0.0ms 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 [2021-10-13 08:07:29,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:07:31,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:07:31,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:07:32,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:07:32,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:07:32,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:07:32,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:07:32,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:07:32,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:07:32,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:07:32,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:07:32,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:07:32,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:07:32,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:07:32,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:07:32,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:07:32,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:07:32,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:07:32,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:07:32,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:07:32,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:07:32,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:07:32,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:07:32,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:07:32,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:07:32,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:07:32,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:07:32,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:07:32,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:07:32,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:07:32,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:07:32,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:07:32,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:07:32,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:07:32,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:07:32,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:07:32,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:07:32,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:07:32,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:07:32,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:07:32,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:07:32,111 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 08:07:32,173 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:07:32,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:07:32,175 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:07:32,176 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:07:32,176 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:07:32,176 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:07:32,177 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:07:32,177 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:07:32,177 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:07:32,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:07:32,181 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:07:32,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:07:32,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:07:32,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:07:32,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:07:32,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:07:32,183 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:07:32,183 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:07:32,183 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:07:32,183 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:07:32,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:07:32,184 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:07:32,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:07:32,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:07:32,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:07:32,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:07:32,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:07:32,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:07:32,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:07:32,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:07:32,187 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:07:32,187 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:07:32,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:07:32,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:07:32,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:07:32,189 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_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e88937087b9f706d9095d98c766f1175cee3adc1 [2021-10-13 08:07:32,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:07:32,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:07:32,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:07:32,700 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:07:32,701 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:07:32,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ldv-regression/fo_test.i [2021-10-13 08:07:32,783 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/data/310bb7c79/2d0d03d8fffd42eb93543478150f36d7/FLAGa7e4eec3b [2021-10-13 08:07:33,434 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:07:33,435 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/sv-benchmarks/c/ldv-regression/fo_test.i [2021-10-13 08:07:33,459 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/data/310bb7c79/2d0d03d8fffd42eb93543478150f36d7/FLAGa7e4eec3b [2021-10-13 08:07:33,689 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/data/310bb7c79/2d0d03d8fffd42eb93543478150f36d7 [2021-10-13 08:07:33,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:07:33,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:07:33,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:07:33,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:07:33,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:07:33,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:07:33" (1/1) ... [2021-10-13 08:07:33,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538007f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:33, skipping insertion in model container [2021-10-13 08:07:33,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:07:33" (1/1) ... [2021-10-13 08:07:33,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:07:33,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:07:34,277 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-10-13 08:07:34,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:07:34,310 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:07:34,370 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/sv-benchmarks/c/ldv-regression/fo_test.i[40440,40453] [2021-10-13 08:07:34,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:07:34,451 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:07:34,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34 WrapperNode [2021-10-13 08:07:34,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:07:34,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:07:34,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:07:34,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:07:34,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:07:34,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:07:34,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:07:34,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:07:34,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:07:34,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:07:34,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:07:34,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:07:34,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (1/1) ... [2021-10-13 08:07:34,606 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:07:34,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:07:34,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:07:34,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:07:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:07:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:07:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 08:07:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-10-13 08:07:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:07:34,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:07:35,333 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:07:35,343 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-13 08:07:35,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:35 BoogieIcfgContainer [2021-10-13 08:07:35,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:07:35,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:07:35,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:07:35,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:07:35,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:07:33" (1/3) ... [2021-10-13 08:07:35,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227638c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:07:35, skipping insertion in model container [2021-10-13 08:07:35,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:34" (2/3) ... [2021-10-13 08:07:35,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227638c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:07:35, skipping insertion in model container [2021-10-13 08:07:35,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:35" (3/3) ... [2021-10-13 08:07:35,365 INFO L111 eAbstractionObserver]: Analyzing ICFG fo_test.i [2021-10-13 08:07:35,385 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:07:35,385 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 08:07:35,460 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:07:35,472 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 08:07:35,473 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 08:07:35,490 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:35,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 08:07:35,511 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:07:35,513 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:07:35,514 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:07:35,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:07:35,522 INFO L82 PathProgramCache]: Analyzing trace with hash 88874922, now seen corresponding path program 1 times [2021-10-13 08:07:35,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:07:35,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352429742] [2021-10-13 08:07:35,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:07:35,544 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:07:35,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:07:35,550 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:07:35,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:07:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:07:35,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:07:35,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:07:35,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:35,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:07:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:07:35,940 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:07:35,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352429742] [2021-10-13 08:07:35,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352429742] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:07:35,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:07:35,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 08:07:35,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199589065] [2021-10-13 08:07:35,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:07:35,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:07:35,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:07:35,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:07:35,984 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:36,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:07:36,017 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-10-13 08:07:36,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:07:36,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 08:07:36,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:07:36,043 INFO L225 Difference]: With dead ends: 24 [2021-10-13 08:07:36,044 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 08:07:36,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:07:36,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 08:07:36,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 08:07:36,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:36,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-13 08:07:36,086 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-13 08:07:36,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:07:36,087 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-13 08:07:36,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:07:36,087 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-13 08:07:36,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 08:07:36,089 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:07:36,089 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:07:36,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:07:36,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:07:36,312 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:07:36,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:07:36,314 INFO L82 PathProgramCache]: Analyzing trace with hash 90721964, now seen corresponding path program 1 times [2021-10-13 08:07:36,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:07:36,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437681586] [2021-10-13 08:07:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:07:36,316 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:07:36,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:07:36,318 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:07:36,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:07:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:07:36,545 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 08:07:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:07:36,678 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 08:07:36,679 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 08:07:36,681 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:07:36,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:07:36,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:07:36,900 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:07:36,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:07:36 BoogieIcfgContainer [2021-10-13 08:07:36,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:07:36,974 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:07:36,974 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:07:36,974 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:07:36,976 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:35" (3/4) ... [2021-10-13 08:07:36,979 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 08:07:36,980 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:07:36,984 INFO L168 Benchmark]: Toolchain (without parser) took 3286.98 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 33.3 MB in the beginning and 41.8 MB in the end (delta: -8.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:36,985 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 56.6 MB. Free memory was 38.1 MB in the beginning and 38.0 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:07:36,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.82 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 33.1 MB in the beginning and 42.7 MB in the end (delta: -9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:36,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.48 ms. Allocated memory is still 75.5 MB. Free memory was 42.7 MB in the beginning and 57.4 MB in the end (delta: -14.7 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:36,988 INFO L168 Benchmark]: Boogie Preprocessor took 56.28 ms. Allocated memory is still 75.5 MB. Free memory was 57.4 MB in the beginning and 54.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:36,989 INFO L168 Benchmark]: RCFGBuilder took 749.53 ms. Allocated memory is still 75.5 MB. Free memory was 54.8 MB in the beginning and 39.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:07:36,990 INFO L168 Benchmark]: TraceAbstraction took 1624.80 ms. Allocated memory is still 75.5 MB. Free memory was 39.1 MB in the beginning and 42.2 MB in the end (delta: -3.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:07:36,991 INFO L168 Benchmark]: Witness Printer took 6.15 ms. Allocated memory is still 75.5 MB. Free memory was 42.2 MB in the beginning and 41.8 MB in the end (delta: 404.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:07:36,995 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 56.6 MB. Free memory was 38.1 MB in the beginning and 38.0 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 756.82 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 33.1 MB in the beginning and 42.7 MB in the end (delta: -9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.48 ms. Allocated memory is still 75.5 MB. Free memory was 42.7 MB in the beginning and 57.4 MB in the end (delta: -14.7 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.28 ms. Allocated memory is still 75.5 MB. Free memory was 57.4 MB in the beginning and 54.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 749.53 ms. Allocated memory is still 75.5 MB. Free memory was 54.8 MB in the beginning and 39.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1624.80 ms. Allocated memory is still 75.5 MB. Free memory was 39.1 MB in the beginning and 42.2 MB in the end (delta: -3.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.15 ms. Allocated memory is still 75.5 MB. Free memory was 42.2 MB in the beginning and 41.8 MB in the end (delta: 404.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 980]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is 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] [L980] reach_error() VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1441.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 27.1ms, AutomataDifference: 81.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 13 SDtfs, 5 SDslu, 6 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 54.2ms SsaConstructionTime, 196.4ms SatisfiabilityAnalysisTime, 164.2ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 66 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 [2021-10-13 08:07:37,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29964a03-c578-4ba7-8463-e55e20dad677/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...