./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0684b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0684b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs --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 605b3a8a7de37bea51c68bab94a94914ddbd465d ................................................................................................................................................................................................................................................................................................................................................................................................................. 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_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0684b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs --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 605b3a8a7de37bea51c68bab94a94914ddbd465d ....................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 01:59:29,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:59:29,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:59:29,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:59:29,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:59:29,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:59:29,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:59:29,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:59:29,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:59:29,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:59:29,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:59:29,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:59:29,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:59:29,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:59:29,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:59:29,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:59:29,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:59:29,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:59:29,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:59:29,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:59:29,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:59:29,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:59:29,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:59:29,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:59:29,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:59:29,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:59:29,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:59:29,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:59:29,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:59:29,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:59:29,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:59:29,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:59:29,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:59:29,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:59:29,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:59:29,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:59:29,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:59:29,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:59:29,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:59:29,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:59:29,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:59:29,998 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 01:59:30,059 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:59:30,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:59:30,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:59:30,062 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:59:30,063 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:59:30,063 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:59:30,063 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 01:59:30,064 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:59:30,064 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:59:30,065 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 01:59:30,074 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 01:59:30,074 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:59:30,075 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 01:59:30,075 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 01:59:30,075 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 01:59:30,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:59:30,077 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:59:30,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 01:59:30,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:59:30,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:59:30,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:59:30,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:59:30,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:59:30,079 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:59:30,080 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:59:30,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:59:30,080 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:59:30,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:59:30,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:59:30,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:59:30,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:30,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:59:30,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:59:30,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:59:30,084 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 01:59:30,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 01:59:30,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:59:30,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:59:30,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:59:30,085 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_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 605b3a8a7de37bea51c68bab94a94914ddbd465d [2021-10-16 01:59:30,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:59:30,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:59:30,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:59:30,407 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:59:30,408 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:59:30,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/double_req_bl_0684b.c [2021-10-16 01:59:30,494 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/data/98e7e6881/035ba81e69334077bea252d4c73aa309/FLAG959e07faa [2021-10-16 01:59:31,030 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:59:31,032 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c [2021-10-16 01:59:31,063 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/data/98e7e6881/035ba81e69334077bea252d4c73aa309/FLAG959e07faa [2021-10-16 01:59:31,349 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/data/98e7e6881/035ba81e69334077bea252d4c73aa309 [2021-10-16 01:59:31,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:59:31,356 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:59:31,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:31,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:59:31,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:59:31,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:31,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42544c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31, skipping insertion in model container [2021-10-16 01:59:31,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:31,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:59:31,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:59:31,807 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_8d7fea4a-b10e-4947-9bab-4595ba51f145/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c[6891,6904] [2021-10-16 01:59:31,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:31,826 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:59:31,917 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_8d7fea4a-b10e-4947-9bab-4595ba51f145/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c[6891,6904] [2021-10-16 01:59:31,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:31,951 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:59:31,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31 WrapperNode [2021-10-16 01:59:31,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:31,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:31,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:59:31,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:59:31,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:31,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:32,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:32,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:59:32,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:59:32,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:59:32,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:32,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:32,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:32,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:32,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:32,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:32,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:32,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:59:32,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:59:32,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:59:32,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:59:32,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:32,130 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:32,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:32,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:59:32,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:59:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 01:59:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:59:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-16 01:59:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 01:59:32,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-16 01:59:32,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:59:32,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:59:32,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 01:59:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-16 01:59:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 01:59:33,417 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:59:33,417 INFO L299 CfgBuilder]: Removed 52 assume(true) statements. [2021-10-16 01:59:33,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:33 BoogieIcfgContainer [2021-10-16 01:59:33,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:59:33,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:59:33,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:59:33,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:59:33,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:59:31" (1/3) ... [2021-10-16 01:59:33,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1377c84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:33, skipping insertion in model container [2021-10-16 01:59:33,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (2/3) ... [2021-10-16 01:59:33,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1377c84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:33, skipping insertion in model container [2021-10-16 01:59:33,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:33" (3/3) ... [2021-10-16 01:59:33,430 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0684b.c [2021-10-16 01:59:33,436 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:59:33,436 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 01:59:33,482 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:59:33,488 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 [2021-10-16 01:59:33,488 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 01:59:33,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 89 states have (on average 1.7415730337078652) internal successors, (155), 90 states have internal predecessors, (155), 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) [2021-10-16 01:59:33,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 01:59:33,511 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:33,511 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:33,512 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:33,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:33,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1224151813, now seen corresponding path program 1 times [2021-10-16 01:59:33,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:59:33,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329164290] [2021-10-16 01:59:33,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:33,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:59:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:33,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:59:33,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329164290] [2021-10-16 01:59:33,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329164290] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:33,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:33,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 01:59:33,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208693410] [2021-10-16 01:59:33,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 01:59:33,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:59:33,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 01:59:33,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:59:33,720 INFO L87 Difference]: Start difference. First operand has 91 states, 89 states have (on average 1.7415730337078652) internal successors, (155), 90 states have internal predecessors, (155), 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 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-10-16 01:59:33,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:33,791 INFO L93 Difference]: Finished difference Result 181 states and 309 transitions. [2021-10-16 01:59:33,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 01:59:33,808 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2021-10-16 01:59:33,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:33,818 INFO L225 Difference]: With dead ends: 181 [2021-10-16 01:59:33,819 INFO L226 Difference]: Without dead ends: 88 [2021-10-16 01:59:33,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:59:33,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-16 01:59:33,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-10-16 01:59:33,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.3563218390804597) internal successors, (118), 87 states have internal predecessors, (118), 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) [2021-10-16 01:59:33,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 118 transitions. [2021-10-16 01:59:33,876 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 118 transitions. Word has length 13 [2021-10-16 01:59:33,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:33,876 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 118 transitions. [2021-10-16 01:59:33,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-10-16 01:59:33,877 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 118 transitions. [2021-10-16 01:59:33,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 01:59:33,878 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:33,878 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:33,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 01:59:33,879 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:33,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:33,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1736900291, now seen corresponding path program 1 times [2021-10-16 01:59:33,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:59:33,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129253775] [2021-10-16 01:59:33,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:33,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:59:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:33,965 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:59:33,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129253775] [2021-10-16 01:59:33,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129253775] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:33,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:33,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 01:59:33,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788308654] [2021-10-16 01:59:33,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:59:33,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:59:33,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:59:33,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:59:33,970 INFO L87 Difference]: Start difference. First operand 88 states and 118 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-10-16 01:59:34,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:34,004 INFO L93 Difference]: Finished difference Result 168 states and 227 transitions. [2021-10-16 01:59:34,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:59:34,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2021-10-16 01:59:34,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:34,007 INFO L225 Difference]: With dead ends: 168 [2021-10-16 01:59:34,007 INFO L226 Difference]: Without dead ends: 88 [2021-10-16 01:59:34,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:59:34,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-16 01:59:34,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-10-16 01:59:34,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.3448275862068966) internal successors, (117), 87 states have internal predecessors, (117), 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) [2021-10-16 01:59:34,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 117 transitions. [2021-10-16 01:59:34,026 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 117 transitions. Word has length 16 [2021-10-16 01:59:34,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:34,027 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 117 transitions. [2021-10-16 01:59:34,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-10-16 01:59:34,027 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 117 transitions. [2021-10-16 01:59:34,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 01:59:34,029 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:34,030 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:34,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 01:59:34,031 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:34,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:34,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1734930982, now seen corresponding path program 1 times [2021-10-16 01:59:34,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:59:34,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628443677] [2021-10-16 01:59:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:34,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:59:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 01:59:34,263 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 01:59:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 01:59:34,434 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 01:59:34,434 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 01:59:34,435 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:59:34,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 01:59:34,443 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 01:59:34,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:59:34 BoogieIcfgContainer [2021-10-16 01:59:34,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 01:59:34,508 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 01:59:34,508 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 01:59:34,508 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 01:59:34,508 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:33" (3/4) ... [2021-10-16 01:59:34,513 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 01:59:34,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 01:59:34,516 INFO L168 Benchmark]: Toolchain (without parser) took 3158.33 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 72.4 MB in the beginning and 60.0 MB in the end (delta: 12.3 MB). Peak memory consumption was 41.4 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:34,517 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 107.0 MB. Free memory is still 59.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:59:34,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 592.38 ms. Allocated memory is still 107.0 MB. Free memory was 72.2 MB in the beginning and 75.7 MB in the end (delta: -3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:34,526 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.48 ms. Allocated memory is still 107.0 MB. Free memory was 75.7 MB in the beginning and 71.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:34,527 INFO L168 Benchmark]: Boogie Preprocessor took 64.45 ms. Allocated memory is still 107.0 MB. Free memory was 71.9 MB in the beginning and 68.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:34,528 INFO L168 Benchmark]: RCFGBuilder took 1306.96 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 68.7 MB in the beginning and 85.6 MB in the end (delta: -16.9 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:34,528 INFO L168 Benchmark]: TraceAbstraction took 1084.20 ms. Allocated memory is still 138.4 MB. Free memory was 84.9 MB in the beginning and 60.0 MB in the end (delta: 24.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:34,529 INFO L168 Benchmark]: Witness Printer took 5.76 ms. Allocated memory is still 138.4 MB. Free memory is still 60.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:59:34,537 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 107.0 MB. Free memory is still 59.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 592.38 ms. Allocated memory is still 107.0 MB. Free memory was 72.2 MB in the beginning and 75.7 MB in the end (delta: -3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.48 ms. Allocated memory is still 107.0 MB. Free memory was 75.7 MB in the beginning and 71.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.45 ms. Allocated memory is still 107.0 MB. Free memory was 71.9 MB in the beginning and 68.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1306.96 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 68.7 MB in the beginning and 85.6 MB in the end (delta: -16.9 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1084.20 ms. Allocated memory is still 138.4 MB. Free memory was 84.9 MB in the beginning and 60.0 MB in the end (delta: 24.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.76 ms. Allocated memory is still 138.4 MB. Free memory is still 60.0 MB. 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: 288]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryDOUBLEComparisonOperation at line 287. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L278] double x = __VERIFIER_nondet_double(); [L279] double y = -1.0 / 0.0; [L262] __int32_t hx; VAL [aT_atan={10:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L264] ieee_double_shape_type gh_u; [L265] gh_u.value = (x) [L266] EXPR gh_u.parts.msw [L266] (hx) = gh_u.parts.msw [L268] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L282] isfinite_double(x) && isinf_double(y) [L248] __int32_t hx, lx; VAL [aT_atan={10:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L250] ieee_double_shape_type ew_u; [L251] ew_u.value = (x) [L252] EXPR ew_u.parts.msw [L252] (hx) = ew_u.parts.msw [L253] EXPR ew_u.parts.lsw [L253] (lx) = ew_u.parts.lsw [L255] hx &= 0x7fffffff [L256] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L257] hx = 0x7ff00000 - hx [L258] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L282] isfinite_double(x) && isinf_double(y) VAL [aT_atan={10:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L282] COND TRUE isfinite_double(x) && isinf_double(y) [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; VAL [aT_atan={10:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff VAL [aT_atan={10:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff VAL [aT_atan={10:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; VAL [aT_atan={10:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L284] double res = __ieee754_atan2(y, x); [L287] COND TRUE res != -pi_o_2 VAL [aT_atan={10:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L288] reach_error() VAL [aT_atan={10:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 961.6ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 12.3ms, AutomataDifference: 167.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 240 SDtfs, 0 SDslu, 112 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 46.5ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.3ms SsaConstructionTime, 290.8ms SatisfiabilityAnalysisTime, 99.4ms InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 [2021-10-16 01:59:34,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 01:59:37,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:59:37,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:59:37,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:59:37,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:59:37,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:59:37,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:59:37,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:59:37,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:59:37,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:59:37,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:59:37,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:59:37,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:59:37,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:59:37,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:59:37,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:59:37,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:59:37,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:59:37,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:59:37,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:59:37,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:59:37,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:59:37,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:59:37,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:59:37,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:59:37,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:59:37,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:59:37,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:59:37,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:59:37,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:59:37,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:59:37,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:59:37,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:59:37,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:59:37,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:59:37,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:59:37,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:59:37,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:59:37,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:59:37,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:59:37,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:59:37,199 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 01:59:37,238 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:59:37,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:59:37,240 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:59:37,240 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:59:37,241 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:59:37,241 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:59:37,241 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:59:37,241 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:59:37,242 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:59:37,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:59:37,244 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:59:37,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:59:37,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:59:37,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:59:37,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:59:37,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:59:37,245 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:59:37,246 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 01:59:37,246 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 01:59:37,246 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:59:37,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:59:37,246 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:59:37,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:59:37,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:59:37,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 01:59:37,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:59:37,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:37,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:59:37,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:59:37,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:59:37,248 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 01:59:37,249 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 01:59:37,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:59:37,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:59:37,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:59:37,249 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_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 605b3a8a7de37bea51c68bab94a94914ddbd465d [2021-10-16 01:59:37,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:59:37,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:59:37,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:59:37,685 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:59:37,690 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:59:37,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/double_req_bl_0684b.c [2021-10-16 01:59:37,777 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/data/c6b5e3488/ce2b251a52bb40c7aa422acedfc8859b/FLAGe55237101 [2021-10-16 01:59:38,418 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:59:38,422 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c [2021-10-16 01:59:38,430 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/data/c6b5e3488/ce2b251a52bb40c7aa422acedfc8859b/FLAGe55237101 [2021-10-16 01:59:38,718 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/data/c6b5e3488/ce2b251a52bb40c7aa422acedfc8859b [2021-10-16 01:59:38,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:59:38,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:59:38,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:38,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:59:38,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:59:38,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:38" (1/1) ... [2021-10-16 01:59:38,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19d882da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:38, skipping insertion in model container [2021-10-16 01:59:38,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:38" (1/1) ... [2021-10-16 01:59:38,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:59:38,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:59:39,022 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_8d7fea4a-b10e-4947-9bab-4595ba51f145/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c[6891,6904] [2021-10-16 01:59:39,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:39,069 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:59:39,192 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_8d7fea4a-b10e-4947-9bab-4595ba51f145/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c[6891,6904] [2021-10-16 01:59:39,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:39,217 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:59:39,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:39 WrapperNode [2021-10-16 01:59:39,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:39,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:39,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:59:39,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:59:39,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:39" (1/1) ... [2021-10-16 01:59:39,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:39" (1/1) ... [2021-10-16 01:59:39,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:39,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:59:39,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:59:39,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:59:39,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:39" (1/1) ... [2021-10-16 01:59:39,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:39" (1/1) ... [2021-10-16 01:59:39,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:39" (1/1) ... [2021-10-16 01:59:39,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:39" (1/1) ... [2021-10-16 01:59:39,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:39" (1/1) ... [2021-10-16 01:59:39,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:39" (1/1) ... [2021-10-16 01:59:39,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:39" (1/1) ... [2021-10-16 01:59:39,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:59:39,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:59:39,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:59:39,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:59:39,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:39" (1/1) ... [2021-10-16 01:59:39,441 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:39,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:39,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:59:39,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:59:39,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-16 01:59:39,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-16 01:59:39,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 01:59:39,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:59:39,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-10-16 01:59:39,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 01:59:39,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:59:39,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:59:39,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 01:59:39,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:00:21,399 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:00:21,400 INFO L299 CfgBuilder]: Removed 52 assume(true) statements. [2021-10-16 02:00:21,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:00:21 BoogieIcfgContainer [2021-10-16 02:00:21,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:00:21,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:00:21,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:00:21,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:00:21,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:59:38" (1/3) ... [2021-10-16 02:00:21,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647e178b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:00:21, skipping insertion in model container [2021-10-16 02:00:21,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:39" (2/3) ... [2021-10-16 02:00:21,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647e178b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:00:21, skipping insertion in model container [2021-10-16 02:00:21,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:00:21" (3/3) ... [2021-10-16 02:00:21,418 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0684b.c [2021-10-16 02:00:21,426 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:00:21,426 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:00:21,497 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:00:21,504 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 [2021-10-16 02:00:21,504 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:00:21,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 122 states have (on average 1.6967213114754098) internal successors, (207), 123 states have internal predecessors, (207), 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) [2021-10-16 02:00:21,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:00:21,546 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:21,550 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:00:21,551 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:00:21,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:21,557 INFO L82 PathProgramCache]: Analyzing trace with hash -617567418, now seen corresponding path program 1 times [2021-10-16 02:00:21,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:21,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262085535] [2021-10-16 02:00:21,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:21,576 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:21,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:21,580 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:21,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:00:21,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:21,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:21,900 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:232) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.logic.NoopScript.annotate(NoopScript.java:577) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertTerm(AnnotateAndAssertCodeBlocks.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertConjunctsOfCodeBlocks.annotateAndAssertTerm(AnnotateAndAssertConjunctsOfCodeBlocks.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertConjunctsOfCodeBlocks.annotateAndAssertConjuncts(AnnotateAndAssertConjunctsOfCodeBlocks.java:135) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertConjunctsOfCodeBlocks.annotateAndAssertNonCall(AnnotateAndAssertConjunctsOfCodeBlocks.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:101) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:312) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:211) ... 31 more [2021-10-16 02:00:21,906 INFO L168 Benchmark]: Toolchain (without parser) took 43181.63 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 30.8 MB in the end (delta: -728.4 kB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:21,907 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 54.5 MB. Free memory was 34.6 MB in the beginning and 34.6 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:00:21,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.33 ms. Allocated memory is still 54.5 MB. Free memory was 29.8 MB in the beginning and 32.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:21,909 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.98 ms. Allocated memory is still 54.5 MB. Free memory was 32.5 MB in the beginning and 28.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:21,910 INFO L168 Benchmark]: Boogie Preprocessor took 124.14 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 28.8 MB in the beginning and 47.3 MB in the end (delta: -18.5 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:21,910 INFO L168 Benchmark]: RCFGBuilder took 41970.43 ms. Allocated memory is still 67.1 MB. Free memory was 47.3 MB in the beginning and 41.6 MB in the end (delta: 5.7 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:21,911 INFO L168 Benchmark]: TraceAbstraction took 498.57 ms. Allocated memory is still 67.1 MB. Free memory was 41.1 MB in the beginning and 30.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:21,915 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 54.5 MB. Free memory was 34.6 MB in the beginning and 34.6 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 480.33 ms. Allocated memory is still 54.5 MB. Free memory was 29.8 MB in the beginning and 32.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.98 ms. Allocated memory is still 54.5 MB. Free memory was 32.5 MB in the beginning and 28.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 124.14 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 28.8 MB in the beginning and 47.3 MB in the end (delta: -18.5 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 41970.43 ms. Allocated memory is still 67.1 MB. Free memory was 47.3 MB in the beginning and 41.6 MB in the end (delta: 5.7 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 498.57 ms. Allocated memory is still 67.1 MB. Free memory was 41.1 MB in the beginning and 30.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:232) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:00:22,155 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-16 02:00:22,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d7fea4a-b10e-4947-9bab-4595ba51f145/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...