./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 70232273db64c4ed6ec49f2ee7a39af483aa4593 ................................................................................................................................................................................................................................................................................ 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_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 70232273db64c4ed6ec49f2ee7a39af483aa4593 ................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-4e77c04 [2021-10-13 06:58:49,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:58:49,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:58:49,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:58:49,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:58:49,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:58:49,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:58:49,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:58:49,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:58:49,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:58:49,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:58:49,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:58:49,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:58:49,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:58:49,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:58:49,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:58:49,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:58:49,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:58:49,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:58:49,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:58:49,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:58:49,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:58:49,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:58:49,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:58:49,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:58:50,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:58:50,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:58:50,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:58:50,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:58:50,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:58:50,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:58:50,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:58:50,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:58:50,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:58:50,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:58:50,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:58:50,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:58:50,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:58:50,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:58:50,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:58:50,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:58:50,025 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:58:50,072 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:58:50,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:58:50,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:58:50,074 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:58:50,074 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:58:50,075 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:58:50,075 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:58:50,075 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:58:50,076 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:58:50,076 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:58:50,076 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:58:50,077 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:58:50,077 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:58:50,077 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:58:50,078 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:58:50,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:58:50,079 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:58:50,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:58:50,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:58:50,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:58:50,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:58:50,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:58:50,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:58:50,082 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:58:50,082 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:58:50,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:58:50,083 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:58:50,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:58:50,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:58:50,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:58:50,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:58:50,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:58:50,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:58:50,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:58:50,086 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:58:50,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:58:50,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:58:50,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:58:50,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:58:50,088 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_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70232273db64c4ed6ec49f2ee7a39af483aa4593 [2021-10-13 06:58:50,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:58:50,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:58:50,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:58:50,413 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:58:50,414 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:58:50,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2021-10-13 06:58:50,470 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/data/f0cab87d9/28742950dbc6448c84fa14cf8411a108/FLAG44d93dc1a [2021-10-13 06:58:50,986 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:58:50,987 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2021-10-13 06:58:50,994 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/data/f0cab87d9/28742950dbc6448c84fa14cf8411a108/FLAG44d93dc1a [2021-10-13 06:58:51,358 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/data/f0cab87d9/28742950dbc6448c84fa14cf8411a108 [2021-10-13 06:58:51,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:58:51,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:58:51,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:58:51,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:58:51,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:58:51,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:58:51" (1/1) ... [2021-10-13 06:58:51,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c937b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:51, skipping insertion in model container [2021-10-13 06:58:51,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:58:51" (1/1) ... [2021-10-13 06:58:51,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:58:51,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:58:51,592 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_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c[709,722] [2021-10-13 06:58:51,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:58:51,628 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:58:51,642 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_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c[709,722] [2021-10-13 06:58:51,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:58:51,676 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:58:51,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:51 WrapperNode [2021-10-13 06:58:51,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:58:51,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:58:51,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:58:51,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:58:51,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:51" (1/1) ... [2021-10-13 06:58:51,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:51" (1/1) ... [2021-10-13 06:58:51,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:58:51,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:58:51,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:58:51,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:58:51,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:51" (1/1) ... [2021-10-13 06:58:51,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:51" (1/1) ... [2021-10-13 06:58:51,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:51" (1/1) ... [2021-10-13 06:58:51,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:51" (1/1) ... [2021-10-13 06:58:51,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:51" (1/1) ... [2021-10-13 06:58:51,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:51" (1/1) ... [2021-10-13 06:58:51,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:51" (1/1) ... [2021-10-13 06:58:51,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:58:51,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:58:51,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:58:51,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:58:51,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:51" (1/1) ... [2021-10-13 06:58:51,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:58:51,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:58:51,850 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:58:51,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:58:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:58:51,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:58:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:58:51,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:58:52,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:58:52,288 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-13 06:58:52,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:58:52 BoogieIcfgContainer [2021-10-13 06:58:52,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:58:52,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:58:52,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:58:52,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:58:52,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:58:51" (1/3) ... [2021-10-13 06:58:52,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@875373d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:58:52, skipping insertion in model container [2021-10-13 06:58:52,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:51" (2/3) ... [2021-10-13 06:58:52,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@875373d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:58:52, skipping insertion in model container [2021-10-13 06:58:52,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:58:52" (3/3) ... [2021-10-13 06:58:52,301 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound20.c [2021-10-13 06:58:52,307 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:58:52,308 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 06:58:52,375 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:58:52,400 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 06:58:52,400 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 06:58:52,418 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) [2021-10-13 06:58:52,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 06:58:52,437 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:58:52,438 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 06:58:52,438 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)] === [2021-10-13 06:58:52,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:58:52,444 INFO L82 PathProgramCache]: Analyzing trace with hash 3980175, now seen corresponding path program 1 times [2021-10-13 06:58:52,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:58:52,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563157488] [2021-10-13 06:58:52,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:58:52,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:58:52,548 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 06:58:52,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900266186] [2021-10-13 06:58:52,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:58:52,550 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:58:52,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:58:52,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:58:52,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 06:58:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:58:52,648 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 06:58:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:58:52,713 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 06:58:52,718 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 06:58:52,719 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:58:52,722 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:58:52,722 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:58:52,723 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:58:52,723 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:58:52,724 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:58:52,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:58:52,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-13 06:58:52,960 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:58:52,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:58:52 BoogieIcfgContainer [2021-10-13 06:58:52,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:58:52,987 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:58:52,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:58:52,988 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:58:52,988 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:58:52" (3/4) ... [2021-10-13 06:58:52,993 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 06:58:52,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:58:52,997 INFO L168 Benchmark]: Toolchain (without parser) took 1631.67 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 48.3 MB in the beginning and 88.7 MB in the end (delta: -40.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:58:52,998 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 86.0 MB. Free memory was 64.5 MB in the beginning and 64.5 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:58:53,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.06 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 48.2 MB in the beginning and 89.5 MB in the end (delta: -41.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:58:53,001 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.47 ms. Allocated memory is still 115.3 MB. Free memory was 89.2 MB in the beginning and 87.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:58:53,003 INFO L168 Benchmark]: Boogie Preprocessor took 51.95 ms. Allocated memory is still 115.3 MB. Free memory was 87.7 MB in the beginning and 86.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:58:53,009 INFO L168 Benchmark]: RCFGBuilder took 480.44 ms. Allocated memory is still 115.3 MB. Free memory was 86.3 MB in the beginning and 73.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:58:53,010 INFO L168 Benchmark]: TraceAbstraction took 690.90 ms. Allocated memory is still 115.3 MB. Free memory was 73.5 MB in the beginning and 89.1 MB in the end (delta: -15.6 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:58:53,012 INFO L168 Benchmark]: Witness Printer took 6.87 ms. Allocated memory is still 115.3 MB. Free memory was 89.1 MB in the beginning and 88.7 MB in the end (delta: 406.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:58:53,021 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 86.0 MB. Free memory was 64.5 MB in the beginning and 64.5 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.06 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 48.2 MB in the beginning and 89.5 MB in the end (delta: -41.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.47 ms. Allocated memory is still 115.3 MB. Free memory was 89.2 MB in the beginning and 87.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.95 ms. Allocated memory is still 115.3 MB. Free memory was 87.7 MB in the beginning and 86.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 480.44 ms. Allocated memory is still 115.3 MB. Free memory was 86.3 MB in the beginning and 73.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 690.90 ms. Allocated memory is still 115.3 MB. Free memory was 73.5 MB in the beginning and 89.1 MB in the end (delta: -15.6 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. * Witness Printer took 6.87 ms. Allocated memory is still 115.3 MB. Free memory was 89.1 MB in the beginning and 88.7 MB in the end (delta: 406.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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: 585.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 23.9ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.7ms, 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: 15.5ms SsaConstructionTime, 30.5ms 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 [2021-10-13 06:58:53,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:58:55,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:58:55,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:58:55,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:58:55,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:58:55,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:58:55,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:58:55,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:58:55,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:58:55,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:58:55,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:58:55,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:58:55,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:58:55,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:58:55,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:58:55,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:58:55,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:58:55,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:58:55,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:58:55,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:58:55,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:58:55,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:58:55,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:58:55,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:58:55,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:58:55,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:58:55,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:58:55,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:58:55,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:58:55,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:58:55,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:58:55,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:58:55,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:58:55,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:58:55,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:58:55,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:58:55,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:58:55,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:58:55,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:58:55,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:58:55,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:58:55,915 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 06:58:55,967 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:58:55,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:58:55,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:58:55,969 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:58:55,969 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:58:55,970 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:58:55,970 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:58:55,970 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:58:55,970 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:58:55,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:58:55,974 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:58:55,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:58:55,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:58:55,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:58:55,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:58:55,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:58:55,975 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:58:55,976 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 06:58:55,976 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 06:58:55,976 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:58:55,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:58:55,977 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:58:55,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:58:55,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:58:55,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 06:58:55,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:58:55,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:58:55,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:58:55,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:58:55,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:58:55,979 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 06:58:55,979 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 06:58:55,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:58:55,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:58:55,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:58:55,981 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_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70232273db64c4ed6ec49f2ee7a39af483aa4593 [2021-10-13 06:58:56,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:58:56,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:58:56,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:58:56,490 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:58:56,490 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:58:56,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2021-10-13 06:58:56,567 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/data/4fde86cf7/56ae657ee2ee45279d3b8ec479960714/FLAG970ad5a4e [2021-10-13 06:58:57,227 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:58:57,227 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2021-10-13 06:58:57,239 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/data/4fde86cf7/56ae657ee2ee45279d3b8ec479960714/FLAG970ad5a4e [2021-10-13 06:58:57,536 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/data/4fde86cf7/56ae657ee2ee45279d3b8ec479960714 [2021-10-13 06:58:57,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:58:57,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:58:57,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:58:57,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:58:57,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:58:57,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:58:57" (1/1) ... [2021-10-13 06:58:57,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ce9707f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:57, skipping insertion in model container [2021-10-13 06:58:57,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:58:57" (1/1) ... [2021-10-13 06:58:57,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:58:57,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:58:57,734 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_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c[709,722] [2021-10-13 06:58:57,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:58:57,775 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:58:57,789 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_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c[709,722] [2021-10-13 06:58:57,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:58:57,818 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:58:57,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:57 WrapperNode [2021-10-13 06:58:57,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:58:57,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:58:57,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:58:57,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:58:57,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:57" (1/1) ... [2021-10-13 06:58:57,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:57" (1/1) ... [2021-10-13 06:58:57,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:58:57,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:58:57,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:58:57,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:58:57,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:57" (1/1) ... [2021-10-13 06:58:57,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:57" (1/1) ... [2021-10-13 06:58:57,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:57" (1/1) ... [2021-10-13 06:58:57,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:57" (1/1) ... [2021-10-13 06:58:57,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:57" (1/1) ... [2021-10-13 06:58:57,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:57" (1/1) ... [2021-10-13 06:58:57,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:57" (1/1) ... [2021-10-13 06:58:57,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:58:57,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:58:57,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:58:57,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:58:57,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:57" (1/1) ... [2021-10-13 06:58:57,938 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:58:57,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:58:57,971 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:58:58,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:58:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 06:58:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:58:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:58:58,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:59:09,056 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:59:09,056 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-13 06:59:09,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:09 BoogieIcfgContainer [2021-10-13 06:59:09,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:59:09,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:59:09,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:59:09,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:59:09,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:58:57" (1/3) ... [2021-10-13 06:59:09,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bbd52ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:59:09, skipping insertion in model container [2021-10-13 06:59:09,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:57" (2/3) ... [2021-10-13 06:59:09,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bbd52ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:59:09, skipping insertion in model container [2021-10-13 06:59:09,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:09" (3/3) ... [2021-10-13 06:59:09,067 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound20.c [2021-10-13 06:59:09,070 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:59:09,071 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 06:59:09,114 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:59:09,119 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 06:59:09,120 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 06:59:09,134 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) [2021-10-13 06:59:09,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 06:59:09,139 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:59:09,140 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:59:09,140 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)] === [2021-10-13 06:59:09,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:59:09,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-10-13 06:59:09,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:59:09,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377913662] [2021-10-13 06:59:09,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:59:09,160 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:59:09,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:59:09,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:59:09,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 06:59:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:59:09,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 06:59:09,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:59:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:59:09,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:59:09,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:59:09,526 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:59:09,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377913662] [2021-10-13 06:59:09,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377913662] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:59:09,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:59:09,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 06:59:09,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940259609] [2021-10-13 06:59:09,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 06:59:09,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:59:09,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 06:59:09,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:59:09,552 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) [2021-10-13 06:59:09,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:59:09,579 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-10-13 06:59:09,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 06:59:09,581 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 [2021-10-13 06:59:09,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:59:09,589 INFO L225 Difference]: With dead ends: 63 [2021-10-13 06:59:09,589 INFO L226 Difference]: Without dead ends: 29 [2021-10-13 06:59:09,592 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 [2021-10-13 06:59:09,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-13 06:59:09,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-13 06:59:09,624 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) [2021-10-13 06:59:09,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-10-13 06:59:09,628 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-10-13 06:59:09,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:59:09,629 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-10-13 06:59:09,629 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) [2021-10-13 06:59:09,629 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-10-13 06:59:09,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 06:59:09,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:59:09,630 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:59:09,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:59:09,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:59:09,850 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)] === [2021-10-13 06:59:09,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:59:09,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-13 06:59:09,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:59:09,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788699364] [2021-10-13 06:59:09,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:59:09,853 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:59:09,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:59:09,854 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:59:09,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 06:59:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:59:10,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 06:59:10,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:59:10,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:59:10,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:59:16,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:59:16,301 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:59:16,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788699364] [2021-10-13 06:59:16,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788699364] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:59:16,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:59:16,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 06:59:16,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138022983] [2021-10-13 06:59:16,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 06:59:16,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:59:16,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 06:59:16,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 06:59:16,305 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) [2021-10-13 06:59:48,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:59:48,604 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-10-13 06:59:48,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 06:59:48,605 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 [2021-10-13 06:59:48,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:59:48,607 INFO L225 Difference]: With dead ends: 34 [2021-10-13 06:59:48,607 INFO L226 Difference]: Without dead ends: 32 [2021-10-13 06:59:48,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5131.8ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 06:59:48,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-13 06:59:48,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-10-13 06:59:48,616 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) [2021-10-13 06:59:48,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-10-13 06:59:48,618 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 7 [2021-10-13 06:59:48,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:59:48,619 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-10-13 06:59:48,619 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) [2021-10-13 06:59:48,619 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-10-13 06:59:48,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 06:59:48,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:59:48,620 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:59:48,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 06:59:48,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:59:48,839 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)] === [2021-10-13 06:59:48,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:59:48,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-10-13 06:59:48,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:59:48,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250029845] [2021-10-13 06:59:48,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:59:48,841 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:59:48,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:59:48,843 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:59:48,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 06:59:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:59:49,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 06:59:49,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:59:52,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:59:52,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:59:58,426 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 [2021-10-13 07:00:00,464 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 [2021-10-13 07:00:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:00:30,485 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:00:30,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250029845] [2021-10-13 07:00:30,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250029845] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:00:30,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:00:30,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-13 07:00:30,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522850914] [2021-10-13 07:00:30,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 07:00:30,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:00:30,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 07:00:30,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=62, Unknown=2, NotChecked=16, Total=110 [2021-10-13 07:00:30,489 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) [2021-10-13 07:00:35,371 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv20 32)))) (.cse1 (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (and .cse0 (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse1 (or (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (or (not .cse1) (not .cse0))) (and .cse0 .cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 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 ((.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))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-13 07:00:37,897 WARN L860 $PredicateComparison]: unable to prove that (and (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv20 32))) (= 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))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-13 07:01:24,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:01:24,783 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-10-13 07:01:24,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:01:24,784 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 [2021-10-13 07:01:24,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:01:24,785 INFO L225 Difference]: With dead ends: 36 [2021-10-13 07:01:24,785 INFO L226 Difference]: Without dead ends: 34 [2021-10-13 07:01:24,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 26449.2ms TimeCoverageRelationStatistics Valid=41, Invalid=77, Unknown=4, NotChecked=60, Total=182 [2021-10-13 07:01:24,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-13 07:01:24,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-10-13 07:01:24,793 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) [2021-10-13 07:01:24,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-10-13 07:01:24,795 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 9 [2021-10-13 07:01:24,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:01:24,795 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-10-13 07:01:24,796 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) [2021-10-13 07:01:24,796 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-10-13 07:01:24,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:01:24,797 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:01:24,797 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:01:24,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 07:01:25,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:01:25,014 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)] === [2021-10-13 07:01:25,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:01:25,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-10-13 07:01:25,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:01:25,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288332999] [2021-10-13 07:01:25,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:01:25,016 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:01:25,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:01:25,019 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:01:25,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:01:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:01:35,636 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:01:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:01:40,292 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 07:01:40,292 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:01:40,294 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:01:40,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:01:40,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:01:40,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:01:40,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:01:40,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:01:40,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:01:40,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:01:40,505 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:01:40,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:01:40 BoogieIcfgContainer [2021-10-13 07:01:40,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:01:40,541 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:01:40,542 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:01:40,542 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:01:40,543 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:09" (3/4) ... [2021-10-13 07:01:40,545 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:01:40,618 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:01:40,618 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:01:40,620 INFO L168 Benchmark]: Toolchain (without parser) took 163078.90 ms. Allocated memory is still 67.1 MB. Free memory was 49.9 MB in the beginning and 29.1 MB in the end (delta: 20.7 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:01:40,621 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 67.1 MB. Free memory was 48.1 MB in the beginning and 48.0 MB in the end (delta: 54.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:01:40,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.51 ms. Allocated memory is still 67.1 MB. Free memory was 49.6 MB in the beginning and 38.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:01:40,623 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.03 ms. Allocated memory is still 67.1 MB. Free memory was 38.5 MB in the beginning and 36.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:01:40,628 INFO L168 Benchmark]: Boogie Preprocessor took 56.19 ms. Allocated memory is still 67.1 MB. Free memory was 36.7 MB in the beginning and 35.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:01:40,629 INFO L168 Benchmark]: RCFGBuilder took 11134.72 ms. Allocated memory is still 67.1 MB. Free memory was 35.2 MB in the beginning and 42.5 MB in the end (delta: -7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:01:40,635 INFO L168 Benchmark]: TraceAbstraction took 151480.90 ms. Allocated memory is still 67.1 MB. Free memory was 42.0 MB in the beginning and 31.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:01:40,635 INFO L168 Benchmark]: Witness Printer took 76.91 ms. Allocated memory is still 67.1 MB. Free memory was 31.2 MB in the beginning and 29.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:01:40,639 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 67.1 MB. Free memory was 48.1 MB in the beginning and 48.0 MB in the end (delta: 54.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.51 ms. Allocated memory is still 67.1 MB. Free memory was 49.6 MB in the beginning and 38.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.03 ms. Allocated memory is still 67.1 MB. Free memory was 38.5 MB in the beginning and 36.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.19 ms. Allocated memory is still 67.1 MB. Free memory was 36.7 MB in the beginning and 35.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 11134.72 ms. Allocated memory is still 67.1 MB. Free memory was 35.2 MB in the beginning and 42.5 MB in the end (delta: -7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 151480.90 ms. Allocated memory is still 67.1 MB. Free memory was 42.0 MB in the beginning and 31.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Witness Printer took 76.91 ms. Allocated memory is still 67.1 MB. Free memory was 31.2 MB in the beginning and 29.1 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: 151391.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 10.8ms, AutomataDifference: 86658.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 83 SDtfs, 19 SDslu, 110 SDs, 0 SdLazy, 73 SolverSat, 10 SolverUnsat, 32 SolverUnknown, 0 SolverNotchecked, 79994.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 31581.1ms 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: 37.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 51.0ms SsaConstructionTime, 11583.4ms SatisfiabilityAnalysisTime, 47277.4ms 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! [2021-10-13 07:01:40,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8fa84d1-f5af-4947-b167-e8c2a1ffa351/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...