./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0684a.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_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/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_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0684a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/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_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/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 ce41e341839c3e0f842e110b5c525e7dc81a9ade ................................................................................................................................................................................................................................................................................................................................................................................................................. 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_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/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_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0684a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/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_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/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 ce41e341839c3e0f842e110b5c525e7dc81a9ade ....................................................................................................................................................................................................................................................................... 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 03:12:48,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:12:48,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:12:48,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:12:48,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:12:48,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:12:48,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:12:48,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:12:48,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:12:48,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:12:48,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:12:48,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:12:48,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:12:48,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:12:48,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:12:48,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:12:48,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:12:48,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:12:48,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:12:48,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:12:48,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:12:48,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:12:48,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:12:48,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:12:48,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:12:48,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:12:48,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:12:48,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:12:48,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:12:48,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:12:48,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:12:48,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:12:48,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:12:48,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:12:48,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:12:48,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:12:48,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:12:48,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:12:48,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:12:48,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:12:48,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:12:48,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:12:48,825 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:12:48,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:12:48,827 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:12:48,827 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:12:48,828 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:12:48,828 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:12:48,828 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:12:48,829 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:12:48,836 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:12:48,836 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:12:48,838 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:12:48,838 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:12:48,839 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:12:48,839 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:12:48,839 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:12:48,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:12:48,840 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:12:48,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:12:48,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:12:48,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:12:48,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:12:48,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:12:48,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:12:48,842 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:12:48,842 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:12:48,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:12:48,843 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:12:48,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:12:48,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:12:48,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:12:48,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:12:48,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:12:48,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:12:48,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:12:48,847 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:12:48,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:12:48,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:12:48,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:12:48,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:12:48,848 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_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce41e341839c3e0f842e110b5c525e7dc81a9ade [2021-10-16 03:12:49,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:12:49,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:12:49,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:12:49,186 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:12:49,187 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:12:49,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/double_req_bl_0684a.c [2021-10-16 03:12:49,251 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/data/1a6a1db70/680e1269577244ba8d8528ee36efb093/FLAG1630aef2b [2021-10-16 03:12:49,851 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:12:49,853 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/sv-benchmarks/c/float-newlib/double_req_bl_0684a.c [2021-10-16 03:12:49,872 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/data/1a6a1db70/680e1269577244ba8d8528ee36efb093/FLAG1630aef2b [2021-10-16 03:12:50,163 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/data/1a6a1db70/680e1269577244ba8d8528ee36efb093 [2021-10-16 03:12:50,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:12:50,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:12:50,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:12:50,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:12:50,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:12:50,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:12:50" (1/1) ... [2021-10-16 03:12:50,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e62ce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:50, skipping insertion in model container [2021-10-16 03:12:50,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:12:50" (1/1) ... [2021-10-16 03:12:50,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:12:50,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:12:50,541 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_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/sv-benchmarks/c/float-newlib/double_req_bl_0684a.c[6889,6902] [2021-10-16 03:12:50,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:12:50,553 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:12:50,660 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_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/sv-benchmarks/c/float-newlib/double_req_bl_0684a.c[6889,6902] [2021-10-16 03:12:50,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:12:50,684 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:12:50,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:50 WrapperNode [2021-10-16 03:12:50,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:12:50,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:12:50,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:12:50,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:12:50,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:50" (1/1) ... [2021-10-16 03:12:50,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:50" (1/1) ... [2021-10-16 03:12:50,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:12:50,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:12:50,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:12:50,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:12:50,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:50" (1/1) ... [2021-10-16 03:12:50,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:50" (1/1) ... [2021-10-16 03:12:50,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:50" (1/1) ... [2021-10-16 03:12:50,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:50" (1/1) ... [2021-10-16 03:12:50,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:50" (1/1) ... [2021-10-16 03:12:50,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:50" (1/1) ... [2021-10-16 03:12:50,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:50" (1/1) ... [2021-10-16 03:12:50,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:12:50,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:12:50,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:12:50,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:12:50,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:50" (1/1) ... [2021-10-16 03:12:50,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:12:50,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:12:50,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:12:50,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:12:51,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:12:51,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:12:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-16 03:12:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 03:12:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-16 03:12:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:12:51,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:12:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 03:12:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-16 03:12:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:12:52,281 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:12:52,281 INFO L299 CfgBuilder]: Removed 52 assume(true) statements. [2021-10-16 03:12:52,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:12:52 BoogieIcfgContainer [2021-10-16 03:12:52,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:12:52,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:12:52,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:12:52,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:12:52,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:12:50" (1/3) ... [2021-10-16 03:12:52,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7b7e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:12:52, skipping insertion in model container [2021-10-16 03:12:52,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:50" (2/3) ... [2021-10-16 03:12:52,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7b7e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:12:52, skipping insertion in model container [2021-10-16 03:12:52,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:12:52" (3/3) ... [2021-10-16 03:12:52,293 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0684a.c [2021-10-16 03:12:52,298 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:12:52,299 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:12:52,348 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:12:52,354 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 03:12:52,362 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:12:52,386 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 03:12:52,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 03:12:52,408 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:12:52,409 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:12:52,409 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:12:52,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:12:52,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1224151813, now seen corresponding path program 1 times [2021-10-16 03:12:52,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:12:52,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966210108] [2021-10-16 03:12:52,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:52,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:12:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:52,632 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 03:12:52,632 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:12:52,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966210108] [2021-10-16 03:12:52,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966210108] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:12:52,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:12:52,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:12:52,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814831928] [2021-10-16 03:12:52,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 03:12:52,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:12:52,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 03:12:52,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:12:52,670 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 03:12:52,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:12:52,717 INFO L93 Difference]: Finished difference Result 181 states and 309 transitions. [2021-10-16 03:12:52,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 03:12:52,718 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 03:12:52,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:12:52,731 INFO L225 Difference]: With dead ends: 181 [2021-10-16 03:12:52,731 INFO L226 Difference]: Without dead ends: 88 [2021-10-16 03:12:52,735 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 03:12:52,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-16 03:12:52,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-10-16 03:12:52,790 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 03:12:52,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 118 transitions. [2021-10-16 03:12:52,801 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 118 transitions. Word has length 13 [2021-10-16 03:12:52,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:12:52,801 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 118 transitions. [2021-10-16 03:12:52,802 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 03:12:52,802 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 118 transitions. [2021-10-16 03:12:52,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 03:12:52,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:12:52,803 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:12:52,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:12:52,804 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:12:52,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:12:52,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1736900291, now seen corresponding path program 1 times [2021-10-16 03:12:52,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:12:52,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523324381] [2021-10-16 03:12:52,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:52,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:12:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:12:52,911 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 03:12:52,912 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:12:52,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523324381] [2021-10-16 03:12:52,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523324381] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:12:52,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:12:52,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:12:52,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649248443] [2021-10-16 03:12:52,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:12:52,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:12:52,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:12:52,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:12:52,916 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 03:12:52,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:12:52,945 INFO L93 Difference]: Finished difference Result 168 states and 227 transitions. [2021-10-16 03:12:52,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:12:52,946 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 03:12:52,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:12:52,947 INFO L225 Difference]: With dead ends: 168 [2021-10-16 03:12:52,947 INFO L226 Difference]: Without dead ends: 88 [2021-10-16 03:12:52,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:12:52,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-16 03:12:52,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-10-16 03:12:52,957 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 03:12:52,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 117 transitions. [2021-10-16 03:12:52,958 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 117 transitions. Word has length 16 [2021-10-16 03:12:52,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:12:52,958 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 117 transitions. [2021-10-16 03:12:52,958 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 03:12:52,959 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 117 transitions. [2021-10-16 03:12:52,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 03:12:52,961 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:12:52,961 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 03:12:52,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 03:12:52,963 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:12:52,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:12:52,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1734930982, now seen corresponding path program 1 times [2021-10-16 03:12:52,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:12:52,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491526050] [2021-10-16 03:12:52,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:12:52,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:12:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:12:53,132 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 03:12:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:12:53,269 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 03:12:53,269 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 03:12:53,270 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:12:53,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 03:12:53,278 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:12:53,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:12:53 BoogieIcfgContainer [2021-10-16 03:12:53,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:12:53,357 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:12:53,357 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:12:53,360 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:12:53,361 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:12:52" (3/4) ... [2021-10-16 03:12:53,364 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 03:12:53,364 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:12:53,368 INFO L168 Benchmark]: Toolchain (without parser) took 3198.31 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 60.0 MB in the beginning and 73.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:12:53,369 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 98.6 MB. Free memory was 76.9 MB in the beginning and 76.8 MB in the end (delta: 62.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:12:53,375 INFO L168 Benchmark]: CACSL2BoogieTranslator took 503.53 ms. Allocated memory is still 98.6 MB. Free memory was 59.8 MB in the beginning and 68.3 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:12:53,376 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.94 ms. Allocated memory is still 98.6 MB. Free memory was 68.3 MB in the beginning and 64.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:12:53,377 INFO L168 Benchmark]: Boogie Preprocessor took 106.80 ms. Allocated memory is still 98.6 MB. Free memory was 64.7 MB in the beginning and 61.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:12:53,378 INFO L168 Benchmark]: RCFGBuilder took 1401.70 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 61.1 MB in the beginning and 82.5 MB in the end (delta: -21.5 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. [2021-10-16 03:12:53,379 INFO L168 Benchmark]: TraceAbstraction took 1071.30 ms. Allocated memory is still 125.8 MB. Free memory was 82.5 MB in the beginning and 73.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:12:53,381 INFO L168 Benchmark]: Witness Printer took 7.37 ms. Allocated memory is still 125.8 MB. Free memory is still 73.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:12:53,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 98.6 MB. Free memory was 76.9 MB in the beginning and 76.8 MB in the end (delta: 62.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 503.53 ms. Allocated memory is still 98.6 MB. Free memory was 59.8 MB in the beginning and 68.3 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.94 ms. Allocated memory is still 98.6 MB. Free memory was 68.3 MB in the beginning and 64.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 106.80 ms. Allocated memory is still 98.6 MB. Free memory was 64.7 MB in the beginning and 61.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1401.70 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 61.1 MB in the beginning and 82.5 MB in the end (delta: -21.5 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1071.30 ms. Allocated memory is still 125.8 MB. Free memory was 82.5 MB in the beginning and 73.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * Witness Printer took 7.37 ms. Allocated memory is still 125.8 MB. Free memory is still 73.3 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: 930.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 30.1ms, AutomataDifference: 122.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 240 SDtfs, 0 SDslu, 112 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms 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: 59.2ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.9ms SsaConstructionTime, 228.1ms SatisfiabilityAnalysisTime, 150.5ms 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 03:12:53,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:12:56,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:12:56,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:12:56,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:12:56,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:12:56,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:12:56,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:12:56,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:12:56,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:12:56,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:12:56,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:12:56,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:12:56,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:12:56,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:12:56,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:12:56,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:12:56,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:12:56,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:12:56,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:12:56,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:12:56,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:12:56,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:12:56,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:12:56,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:12:56,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:12:56,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:12:56,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:12:56,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:12:56,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:12:56,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:12:56,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:12:56,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:12:56,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:12:56,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:12:56,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:12:56,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:12:56,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:12:56,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:12:56,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:12:56,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:12:56,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:12:56,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 03:12:56,269 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:12:56,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:12:56,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:12:56,271 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:12:56,271 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:12:56,271 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:12:56,272 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:12:56,272 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:12:56,272 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:12:56,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:12:56,276 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:12:56,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:12:56,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:12:56,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:12:56,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:12:56,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:12:56,277 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:12:56,278 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:12:56,278 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:12:56,278 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:12:56,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:12:56,279 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:12:56,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:12:56,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:12:56,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:12:56,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:12:56,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:12:56,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:12:56,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:12:56,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:12:56,281 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:12:56,281 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:12:56,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:12:56,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:12:56,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:12:56,283 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_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce41e341839c3e0f842e110b5c525e7dc81a9ade [2021-10-16 03:12:56,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:12:56,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:12:56,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:12:56,752 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:12:56,753 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:12:56,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/double_req_bl_0684a.c [2021-10-16 03:12:56,834 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/data/b5d9c04d4/e9cc0c69a0c54197b29292f63b99594a/FLAG6d4752bbd [2021-10-16 03:12:57,520 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:12:57,521 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/sv-benchmarks/c/float-newlib/double_req_bl_0684a.c [2021-10-16 03:12:57,530 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/data/b5d9c04d4/e9cc0c69a0c54197b29292f63b99594a/FLAG6d4752bbd [2021-10-16 03:12:57,804 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/data/b5d9c04d4/e9cc0c69a0c54197b29292f63b99594a [2021-10-16 03:12:57,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:12:57,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:12:57,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:12:57,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:12:57,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:12:57,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:12:57" (1/1) ... [2021-10-16 03:12:57,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@677113e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:57, skipping insertion in model container [2021-10-16 03:12:57,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:12:57" (1/1) ... [2021-10-16 03:12:57,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:12:57,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:12:58,121 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_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/sv-benchmarks/c/float-newlib/double_req_bl_0684a.c[6889,6902] [2021-10-16 03:12:58,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:12:58,175 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:12:58,251 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_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/sv-benchmarks/c/float-newlib/double_req_bl_0684a.c[6889,6902] [2021-10-16 03:12:58,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:12:58,275 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:12:58,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:58 WrapperNode [2021-10-16 03:12:58,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:12:58,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:12:58,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:12:58,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:12:58,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:58" (1/1) ... [2021-10-16 03:12:58,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:58" (1/1) ... [2021-10-16 03:12:58,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:12:58,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:12:58,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:12:58,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:12:58,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:58" (1/1) ... [2021-10-16 03:12:58,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:58" (1/1) ... [2021-10-16 03:12:58,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:58" (1/1) ... [2021-10-16 03:12:58,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:58" (1/1) ... [2021-10-16 03:12:58,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:58" (1/1) ... [2021-10-16 03:12:58,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:58" (1/1) ... [2021-10-16 03:12:58,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:58" (1/1) ... [2021-10-16 03:12:58,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:12:58,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:12:58,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:12:58,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:12:58,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:58" (1/1) ... [2021-10-16 03:12:58,456 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:12:58,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:12:58,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:12:58,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:12:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-16 03:12:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-16 03:12:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:12:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:12:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-10-16 03:12:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 03:12:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:12:58,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:12:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 03:12:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:13:36,579 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:13:36,580 INFO L299 CfgBuilder]: Removed 52 assume(true) statements. [2021-10-16 03:13:36,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:13:36 BoogieIcfgContainer [2021-10-16 03:13:36,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:13:36,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:13:36,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:13:36,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:13:36,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:12:57" (1/3) ... [2021-10-16 03:13:36,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27297213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:13:36, skipping insertion in model container [2021-10-16 03:13:36,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:12:58" (2/3) ... [2021-10-16 03:13:36,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27297213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:13:36, skipping insertion in model container [2021-10-16 03:13:36,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:13:36" (3/3) ... [2021-10-16 03:13:36,594 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0684a.c [2021-10-16 03:13:36,601 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:13:36,601 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:13:36,663 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:13:36,671 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 03:13:36,671 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:13:36,691 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 03:13:36,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 03:13:36,697 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:13:36,698 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:13:36,699 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:13:36,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:13:36,705 INFO L82 PathProgramCache]: Analyzing trace with hash -617567418, now seen corresponding path program 1 times [2021-10-16 03:13:36,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:13:36,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025643574] [2021-10-16 03:13:36,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:13:36,721 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:13:36,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:13:36,724 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:13:36,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:13:36,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:13:37,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:13:37,022 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 03:13:37,029 INFO L168 Benchmark]: Toolchain (without parser) took 39220.03 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 44.0 MB in the beginning and 50.3 MB in the end (delta: -6.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:37,030 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 65.0 MB. Free memory is still 46.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:13:37,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 467.94 ms. Allocated memory is still 65.0 MB. Free memory was 43.8 MB in the beginning and 43.4 MB in the end (delta: 341.6 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:37,032 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.77 ms. Allocated memory is still 65.0 MB. Free memory was 43.2 MB in the beginning and 39.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:37,034 INFO L168 Benchmark]: Boogie Preprocessor took 85.00 ms. Allocated memory is still 65.0 MB. Free memory was 39.7 MB in the beginning and 35.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:37,036 INFO L168 Benchmark]: RCFGBuilder took 38152.64 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 35.9 MB in the beginning and 61.8 MB in the end (delta: -25.9 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:37,037 INFO L168 Benchmark]: TraceAbstraction took 441.26 ms. Allocated memory is still 90.2 MB. Free memory was 61.0 MB in the beginning and 50.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:13:37,043 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 65.0 MB. Free memory is still 46.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 467.94 ms. Allocated memory is still 65.0 MB. Free memory was 43.8 MB in the beginning and 43.4 MB in the end (delta: 341.6 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.77 ms. Allocated memory is still 65.0 MB. Free memory was 43.2 MB in the beginning and 39.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.00 ms. Allocated memory is still 65.0 MB. Free memory was 39.7 MB in the beginning and 35.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 38152.64 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 35.9 MB in the beginning and 61.8 MB in the end (delta: -25.9 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 441.26 ms. Allocated memory is still 90.2 MB. Free memory was 61.0 MB in the beginning and 50.3 MB in the end (delta: 10.7 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 03:13:37,286 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-16 03:13:37,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56fd5e5f-dcdc-42e3-8f08-dfac11daf48d/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...