./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.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_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/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_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/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_3567649a-af17-4c3e-acac-89d05b269ae2/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 9fcd45ede82cce2814a3d32a6059b5373fc6da41 ................................................................................................................................................................................................................................................................................ 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_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/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_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/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_3567649a-af17-4c3e-acac-89d05b269ae2/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 9fcd45ede82cce2814a3d32a6059b5373fc6da41 ................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:22:15,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:22:15,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:22:15,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:22:15,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:22:15,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:22:15,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:22:15,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:22:15,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:22:15,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:22:15,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:22:15,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:22:15,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:22:15,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:22:15,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:22:15,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:22:15,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:22:15,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:22:16,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:22:16,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:22:16,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:22:16,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:22:16,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:22:16,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:22:16,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:22:16,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:22:16,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:22:16,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:22:16,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:22:16,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:22:16,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:22:16,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:22:16,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:22:16,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:22:16,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:22:16,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:22:16,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:22:16,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:22:16,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:22:16,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:22:16,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:22:16,036 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:22:16,071 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:22:16,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:22:16,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:22:16,073 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:22:16,074 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:22:16,074 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:22:16,074 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:22:16,075 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:22:16,075 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:22:16,075 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:22:16,075 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:22:16,076 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:22:16,076 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:22:16,076 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:22:16,077 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:22:16,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:22:16,078 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:22:16,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:22:16,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:22:16,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:22:16,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:22:16,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:22:16,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:22:16,080 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:22:16,081 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:22:16,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:22:16,081 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:22:16,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:22:16,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:22:16,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:22:16,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:22:16,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:22:16,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:22:16,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:22:16,084 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:22:16,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:22:16,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:22:16,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:22:16,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:22:16,085 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fcd45ede82cce2814a3d32a6059b5373fc6da41 [2021-10-16 02:22:16,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:22:16,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:22:16,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:22:16,422 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:22:16,423 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:22:16,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c [2021-10-16 02:22:16,537 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/data/e0a67b638/00bc37bd6b9c4d11ad637c3bc00a4f5c/FLAGdc6ecec07 [2021-10-16 02:22:17,168 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:22:17,175 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c [2021-10-16 02:22:17,186 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/data/e0a67b638/00bc37bd6b9c4d11ad637c3bc00a4f5c/FLAGdc6ecec07 [2021-10-16 02:22:17,509 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/data/e0a67b638/00bc37bd6b9c4d11ad637c3bc00a4f5c [2021-10-16 02:22:17,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:22:17,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:22:17,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:22:17,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:22:17,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:22:17,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:22:17" (1/1) ... [2021-10-16 02:22:17,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5d67fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:17, skipping insertion in model container [2021-10-16 02:22:17,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:22:17" (1/1) ... [2021-10-16 02:22:17,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:22:17,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:22:17,775 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_3567649a-af17-4c3e-acac-89d05b269ae2/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c[709,722] [2021-10-16 02:22:17,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:22:17,816 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:22:17,832 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_3567649a-af17-4c3e-acac-89d05b269ae2/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c[709,722] [2021-10-16 02:22:17,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:22:17,864 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:22:17,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:17 WrapperNode [2021-10-16 02:22:17,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:22:17,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:22:17,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:22:17,867 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:22:17,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:17" (1/1) ... [2021-10-16 02:22:17,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:17" (1/1) ... [2021-10-16 02:22:17,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:22:17,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:22:17,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:22:17,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:22:17,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:17" (1/1) ... [2021-10-16 02:22:17,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:17" (1/1) ... [2021-10-16 02:22:17,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:17" (1/1) ... [2021-10-16 02:22:17,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:17" (1/1) ... [2021-10-16 02:22:17,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:17" (1/1) ... [2021-10-16 02:22:17,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:17" (1/1) ... [2021-10-16 02:22:17,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:17" (1/1) ... [2021-10-16 02:22:17,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:22:17,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:22:17,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:22:17,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:22:17,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:17" (1/1) ... [2021-10-16 02:22:17,970 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:22:17,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:22:18,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:22:18,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:22:18,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:22:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:22:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:22:18,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:22:18,374 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:22:18,375 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-16 02:22:18,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:22:18 BoogieIcfgContainer [2021-10-16 02:22:18,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:22:18,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:22:18,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:22:18,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:22:18,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:22:17" (1/3) ... [2021-10-16 02:22:18,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3758961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:22:18, skipping insertion in model container [2021-10-16 02:22:18,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:17" (2/3) ... [2021-10-16 02:22:18,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3758961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:22:18, skipping insertion in model container [2021-10-16 02:22:18,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:22:18" (3/3) ... [2021-10-16 02:22:18,388 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound1.c [2021-10-16 02:22:18,395 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:22:18,396 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-16 02:22:18,454 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:22:18,462 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:22:18,463 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-16 02:22:18,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:22:18,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:22:18,492 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:22:18,493 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:22:18,494 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:22:18,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:22:18,519 INFO L82 PathProgramCache]: Analyzing trace with hash 3980175, now seen corresponding path program 1 times [2021-10-16 02:22:18,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:22:18,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274956262] [2021-10-16 02:22:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:22:18,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:22:18,722 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:22:18,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936716220] [2021-10-16 02:22:18,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:22:18,725 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:22:18,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:22:18,728 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:22:18,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:22:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:22:18,842 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:22:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:22:18,905 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:22:18,908 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:22:18,910 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:22:18,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:22:18,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:22:18,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:22:18,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:22:18,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:22:18,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:22:19,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-16 02:22:19,148 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:22:19,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:22:19 BoogieIcfgContainer [2021-10-16 02:22:19,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:22:19,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:22:19,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:22:19,172 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:22:19,173 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:22:18" (3/4) ... [2021-10-16 02:22:19,177 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:22:19,177 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:22:19,180 INFO L168 Benchmark]: Toolchain (without parser) took 1664.77 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 57.3 MB in the beginning and 52.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:22:19,181 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 90.2 MB. Free memory is still 44.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:22:19,182 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.44 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 57.1 MB in the beginning and 83.7 MB in the end (delta: -26.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:22:19,183 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.26 ms. Allocated memory is still 109.1 MB. Free memory was 83.7 MB in the beginning and 82.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:22:19,184 INFO L168 Benchmark]: Boogie Preprocessor took 33.56 ms. Allocated memory is still 109.1 MB. Free memory was 82.3 MB in the beginning and 80.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:22:19,185 INFO L168 Benchmark]: RCFGBuilder took 429.27 ms. Allocated memory is still 109.1 MB. Free memory was 80.7 MB in the beginning and 68.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:22:19,186 INFO L168 Benchmark]: TraceAbstraction took 790.98 ms. Allocated memory is still 109.1 MB. Free memory was 68.1 MB in the beginning and 52.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:22:19,187 INFO L168 Benchmark]: Witness Printer took 5.88 ms. Allocated memory is still 109.1 MB. Free memory is still 52.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:22:19,191 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 90.2 MB. Free memory is still 44.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 349.44 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 57.1 MB in the beginning and 83.7 MB in the end (delta: -26.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.26 ms. Allocated memory is still 109.1 MB. Free memory was 83.7 MB in the beginning and 82.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.56 ms. Allocated memory is still 109.1 MB. Free memory was 82.3 MB in the beginning and 80.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 429.27 ms. Allocated memory is still 109.1 MB. Free memory was 80.7 MB in the beginning and 68.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 790.98 ms. Allocated memory is still 109.1 MB. Free memory was 68.1 MB in the beginning and 52.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.88 ms. Allocated memory is still 109.1 MB. Free memory is still 52.4 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: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND TRUE !(cond) [L19] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 694.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 15.6ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.7ms SsaConstructionTime, 31.8ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 02:22:19,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/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 02:22:22,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:22:22,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:22:22,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:22:22,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:22:22,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:22:22,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:22:22,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:22:22,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:22:22,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:22:22,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:22:22,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:22:22,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:22:22,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:22:22,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:22:22,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:22:22,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:22:22,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:22:22,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:22:22,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:22:22,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:22:22,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:22:22,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:22:22,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:22:22,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:22:22,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:22:22,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:22:22,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:22:22,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:22:22,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:22:22,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:22:22,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:22:22,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:22:22,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:22:22,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:22:22,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:22:22,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:22:22,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:22:22,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:22:22,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:22:22,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:22:22,345 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:22:22,405 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:22:22,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:22:22,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:22:22,407 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:22:22,408 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:22:22,408 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:22:22,408 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:22:22,409 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:22:22,410 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:22:22,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:22:22,414 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:22:22,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:22:22,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:22:22,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:22:22,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:22:22,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:22:22,415 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:22:22,416 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:22:22,416 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:22:22,416 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:22:22,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:22:22,417 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:22:22,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:22:22,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:22:22,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:22:22,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:22:22,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:22:22,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:22:22,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:22:22,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:22:22,420 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:22:22,420 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:22:22,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:22:22,421 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:22:22,421 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:22:22,421 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_3567649a-af17-4c3e-acac-89d05b269ae2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fcd45ede82cce2814a3d32a6059b5373fc6da41 [2021-10-16 02:22:22,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:22:22,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:22:22,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:22:22,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:22:22,973 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:22:22,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c [2021-10-16 02:22:23,068 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/data/8a2072f55/d0ef11eda23b45b398435ea563c7e872/FLAG4048b5591 [2021-10-16 02:22:23,787 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:22:23,788 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c [2021-10-16 02:22:23,796 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/data/8a2072f55/d0ef11eda23b45b398435ea563c7e872/FLAG4048b5591 [2021-10-16 02:22:24,116 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/data/8a2072f55/d0ef11eda23b45b398435ea563c7e872 [2021-10-16 02:22:24,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:22:24,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:22:24,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:22:24,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:22:24,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:22:24,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:22:24" (1/1) ... [2021-10-16 02:22:24,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cca3cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:24, skipping insertion in model container [2021-10-16 02:22:24,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:22:24" (1/1) ... [2021-10-16 02:22:24,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:22:24,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:22:24,334 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_3567649a-af17-4c3e-acac-89d05b269ae2/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c[709,722] [2021-10-16 02:22:24,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:22:24,393 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:22:24,413 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_3567649a-af17-4c3e-acac-89d05b269ae2/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c[709,722] [2021-10-16 02:22:24,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:22:24,466 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:22:24,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:24 WrapperNode [2021-10-16 02:22:24,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:22:24,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:22:24,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:22:24,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:22:24,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:24" (1/1) ... [2021-10-16 02:22:24,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:24" (1/1) ... [2021-10-16 02:22:24,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:22:24,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:22:24,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:22:24,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:22:24,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:24" (1/1) ... [2021-10-16 02:22:24,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:24" (1/1) ... [2021-10-16 02:22:24,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:24" (1/1) ... [2021-10-16 02:22:24,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:24" (1/1) ... [2021-10-16 02:22:24,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:24" (1/1) ... [2021-10-16 02:22:24,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:24" (1/1) ... [2021-10-16 02:22:24,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:24" (1/1) ... [2021-10-16 02:22:24,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:22:24,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:22:24,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:22:24,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:22:24,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:24" (1/1) ... [2021-10-16 02:22:24,614 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:22:24,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:22:24,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:22:24,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:22:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:22:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:22:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:22:24,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:22:36,019 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:22:36,020 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-16 02:22:36,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:22:36 BoogieIcfgContainer [2021-10-16 02:22:36,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:22:36,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:22:36,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:22:36,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:22:36,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:22:24" (1/3) ... [2021-10-16 02:22:36,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af12101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:22:36, skipping insertion in model container [2021-10-16 02:22:36,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:22:24" (2/3) ... [2021-10-16 02:22:36,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af12101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:22:36, skipping insertion in model container [2021-10-16 02:22:36,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:22:36" (3/3) ... [2021-10-16 02:22:36,033 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound1.c [2021-10-16 02:22:36,040 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:22:36,040 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-16 02:22:36,097 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:22:36,103 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:22:36,104 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-16 02:22:36,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:22:36,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:22:36,133 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:22:36,134 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:22:36,134 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:22:36,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:22:36,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-10-16 02:22:36,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:22:36,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405271184] [2021-10-16 02:22:36,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:22:36,168 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:22:36,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:22:36,188 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:22:36,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:22:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:22:36,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:22:36,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:22:36,532 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 02:22:36,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:22:36,594 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 02:22:36,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:22:36,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405271184] [2021-10-16 02:22:36,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405271184] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:22:36,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:22:36,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:22:36,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631454684] [2021-10-16 02:22:36,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:22:36,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:22:36,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:22:36,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:22:36,631 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:22:36,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:22:36,658 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-10-16 02:22:36,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:22:36,660 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-10-16 02:22:36,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:22:36,671 INFO L225 Difference]: With dead ends: 63 [2021-10-16 02:22:36,671 INFO L226 Difference]: Without dead ends: 29 [2021-10-16 02:22:36,675 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 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 02:22:36,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-16 02:22:36,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-16 02:22:36,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:22:36,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-10-16 02:22:36,720 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-10-16 02:22:36,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:22:36,721 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-10-16 02:22:36,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:22:36,722 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-10-16 02:22:36,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:22:36,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:22:36,723 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:22:36,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:22:36,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:22:36,942 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:22:36,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:22:36,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-16 02:22:36,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:22:36,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482935454] [2021-10-16 02:22:36,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:22:36,944 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:22:36,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:22:36,946 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:22:36,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:22:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:22:37,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:22:37,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:22:37,481 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 02:22:37,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:22:44,754 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 02:22:44,754 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:22:44,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482935454] [2021-10-16 02:22:44,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482935454] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:22:44,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:22:44,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 02:22:44,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346184481] [2021-10-16 02:22:44,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:22:44,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:22:44,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:22:44,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:22:44,759 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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 02:23:15,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:15,102 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-10-16 02:23:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:23:15,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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 7 [2021-10-16 02:23:15,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:15,104 INFO L225 Difference]: With dead ends: 34 [2021-10-16 02:23:15,104 INFO L226 Difference]: Without dead ends: 32 [2021-10-16 02:23:15,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 6419.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:23:15,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-16 02:23:15,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-10-16 02:23:15,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.24) internal successors, (31), 30 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:23:15,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-10-16 02:23:15,113 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 7 [2021-10-16 02:23:15,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:15,114 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-10-16 02:23:15,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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 02:23:15,115 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-10-16 02:23:15,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:23:15,116 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:15,116 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:23:15,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-16 02:23:15,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:23:15,333 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:23:15,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:15,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-10-16 02:23:15,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:23:15,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525742843] [2021-10-16 02:23:15,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:15,336 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:23:15,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:23:15,337 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:23:15,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:23:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:16,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:23:16,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:18,959 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 02:23:18,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:25,200 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from false [2021-10-16 02:23:27,240 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from true [2021-10-16 02:23:57,628 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 02:23:57,628 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:23:57,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525742843] [2021-10-16 02:23:57,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525742843] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:23:57,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:23:57,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-16 02:23:57,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266079352] [2021-10-16 02:23:57,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-16 02:23:57,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:23:57,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-16 02:23:57,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=62, Unknown=2, NotChecked=16, Total=110 [2021-10-16 02:23:57,632 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:24:03,121 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (.cse0 (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))))) (and (or (and (or (not .cse0) (not .cse1)) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) (and .cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse0)) (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse1 (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) .cse0 (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-16 02:24:05,696 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-16 02:24:54,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:24:54,477 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-10-16 02:24:54,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:24:54,477 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 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 9 [2021-10-16 02:24:54,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:24:54,478 INFO L225 Difference]: With dead ends: 36 [2021-10-16 02:24:54,479 INFO L226 Difference]: Without dead ends: 34 [2021-10-16 02:24:54,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 26970.3ms TimeCoverageRelationStatistics Valid=41, Invalid=77, Unknown=4, NotChecked=60, Total=182 [2021-10-16 02:24:54,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-16 02:24:54,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-10-16 02:24:54,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 32 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:24:54,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-10-16 02:24:54,488 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 9 [2021-10-16 02:24:54,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:24:54,489 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-10-16 02:24:54,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:24:54,490 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-10-16 02:24:54,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:24:54,491 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:24:54,491 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:24:54,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:24:54,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:24:54,707 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:24:54,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:24:54,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-10-16 02:24:54,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:24:54,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250163090] [2021-10-16 02:24:54,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:24:54,708 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:24:54,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:24:54,712 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:24:54,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:24:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:24:57,117 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:25:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:25:00,471 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 02:25:00,471 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:25:00,473 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:25:00,475 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:25:00,476 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:25:00,476 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:25:00,476 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:25:00,477 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:25:00,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:25:00,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:25:00,707 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:25:00,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:25:00 BoogieIcfgContainer [2021-10-16 02:25:00,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:25:00,747 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:25:00,749 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:25:00,750 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:25:00,751 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:22:36" (3/4) ... [2021-10-16 02:25:00,755 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 02:25:00,839 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:25:00,843 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:25:00,845 INFO L168 Benchmark]: Toolchain (without parser) took 156723.74 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 36.3 MB in the beginning and 31.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:00,847 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 58.7 MB. Free memory was 39.4 MB in the beginning and 39.4 MB in the end (delta: 44.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:25:00,848 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.12 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 36.1 MB in the beginning and 60.8 MB in the end (delta: -24.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:00,849 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.53 ms. Allocated memory is still 77.6 MB. Free memory was 60.8 MB in the beginning and 59.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:00,853 INFO L168 Benchmark]: Boogie Preprocessor took 39.27 ms. Allocated memory is still 77.6 MB. Free memory was 59.2 MB in the beginning and 57.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:25:00,854 INFO L168 Benchmark]: RCFGBuilder took 11418.69 ms. Allocated memory is still 77.6 MB. Free memory was 57.6 MB in the beginning and 46.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:00,865 INFO L168 Benchmark]: TraceAbstraction took 144722.00 ms. Allocated memory is still 77.6 MB. Free memory was 45.9 MB in the beginning and 33.8 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:00,866 INFO L168 Benchmark]: Witness Printer took 96.42 ms. Allocated memory is still 77.6 MB. Free memory was 33.8 MB in the beginning and 31.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:25:00,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 58.7 MB. Free memory was 39.4 MB in the beginning and 39.4 MB in the end (delta: 44.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.12 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 36.1 MB in the beginning and 60.8 MB in the end (delta: -24.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.53 ms. Allocated memory is still 77.6 MB. Free memory was 60.8 MB in the beginning and 59.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.27 ms. Allocated memory is still 77.6 MB. Free memory was 59.2 MB in the beginning and 57.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 11418.69 ms. Allocated memory is still 77.6 MB. Free memory was 57.6 MB in the beginning and 46.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 144722.00 ms. Allocated memory is still 77.6 MB. Free memory was 45.9 MB in the beginning and 33.8 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * Witness Printer took 96.42 ms. Allocated memory is still 77.6 MB. Free memory was 33.8 MB in the beginning and 31.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND FALSE !(!(cond)) [L17] COND FALSE !(!(cond)) [L17] COND TRUE !(cond) [L19] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 144609.8ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 20.1ms, AutomataDifference: 87266.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 83 SDtfs, 19 SDslu, 110 SDs, 0 SdLazy, 72 SolverSat, 10 SolverUnsat, 34 SolverUnknown, 0 SolverNotchecked, 80668.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 33390.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 43.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 54.4ms SsaConstructionTime, 3340.3ms SatisfiabilityAnalysisTime, 49383.3ms InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 327 SizeOfPredicates, 11 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 proved your program to be incorrect! [2021-10-16 02:25:01,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3567649a-af17-4c3e-acac-89d05b269ae2/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...