./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_non_eq-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_non_eq-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl --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 41c9705134faa9e28eba566071c8a538a7da12abc5ccedccf4ff4ee4f7173585 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:28:24,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:28:24,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:28:24,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:28:24,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:28:24,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:28:24,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:28:24,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:28:24,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:28:24,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:28:24,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:28:24,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:28:24,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:28:24,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:28:24,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:28:24,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:28:24,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:28:24,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:28:24,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:28:24,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:28:24,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:28:24,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:28:24,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:28:24,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:28:24,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:28:24,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:28:24,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:28:24,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:28:24,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:28:24,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:28:24,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:28:24,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:28:24,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:28:24,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:28:24,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:28:24,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:28:24,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:28:24,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:28:24,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:28:24,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:28:24,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:28:24,107 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:28:24,132 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:28:24,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:28:24,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:28:24,134 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:28:24,135 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:28:24,135 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:28:24,135 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:28:24,136 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:28:24,136 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:28:24,137 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:28:24,137 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:28:24,137 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:28:24,138 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:28:24,138 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:28:24,138 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:28:24,139 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:28:24,139 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:28:24,140 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:28:24,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:28:24,141 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:28:24,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:28:24,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:28:24,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:28:24,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:28:24,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:28:24,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:28:24,144 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:28:24,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:28:24,144 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:28:24,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:28:24,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:28:24,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:28:24,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:28:24,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:28:24,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:28:24,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:28:24,146 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:28:24,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:28:24,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:28:24,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:28:24,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:28:24,148 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_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41c9705134faa9e28eba566071c8a538a7da12abc5ccedccf4ff4ee4f7173585 [2021-11-23 17:28:24,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:28:24,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:28:24,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:28:24,425 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:28:24,426 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:28:24,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/recursive-simple/sum_non_eq-3.c [2021-11-23 17:28:24,505 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/data/7ac5a4286/5611ea3ae59744cebdddedab40b9baf9/FLAGcb8ad1461 [2021-11-23 17:28:24,982 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:28:24,983 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/sv-benchmarks/c/recursive-simple/sum_non_eq-3.c [2021-11-23 17:28:24,988 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/data/7ac5a4286/5611ea3ae59744cebdddedab40b9baf9/FLAGcb8ad1461 [2021-11-23 17:28:25,360 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/data/7ac5a4286/5611ea3ae59744cebdddedab40b9baf9 [2021-11-23 17:28:25,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:28:25,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:28:25,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:28:25,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:28:25,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:28:25,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:28:25" (1/1) ... [2021-11-23 17:28:25,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39cc37ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:25, skipping insertion in model container [2021-11-23 17:28:25,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:28:25" (1/1) ... [2021-11-23 17:28:25,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:28:25,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:28:25,601 WARN L230 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_2ba5a039-862c-4c72-b335-00e3a637318e/sv-benchmarks/c/recursive-simple/sum_non_eq-3.c[628,641] [2021-11-23 17:28:25,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:28:25,618 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:28:25,636 WARN L230 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_2ba5a039-862c-4c72-b335-00e3a637318e/sv-benchmarks/c/recursive-simple/sum_non_eq-3.c[628,641] [2021-11-23 17:28:25,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:28:25,655 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:28:25,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:25 WrapperNode [2021-11-23 17:28:25,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:28:25,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:28:25,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:28:25,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:28:25,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:25" (1/1) ... [2021-11-23 17:28:25,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:25" (1/1) ... [2021-11-23 17:28:25,697 INFO L137 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2021-11-23 17:28:25,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:28:25,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:28:25,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:28:25,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:28:25,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:25" (1/1) ... [2021-11-23 17:28:25,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:25" (1/1) ... [2021-11-23 17:28:25,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:25" (1/1) ... [2021-11-23 17:28:25,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:25" (1/1) ... [2021-11-23 17:28:25,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:25" (1/1) ... [2021-11-23 17:28:25,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:25" (1/1) ... [2021-11-23 17:28:25,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:25" (1/1) ... [2021-11-23 17:28:25,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:28:25,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:28:25,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:28:25,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:28:25,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:25" (1/1) ... [2021-11-23 17:28:25,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:28:25,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:28:25,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:28:25,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:28:25,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:28:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:28:25,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:28:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2021-11-23 17:28:25,839 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2021-11-23 17:28:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:28:25,916 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:28:25,918 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:28:26,067 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:28:26,079 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:28:26,082 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 17:28:26,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:28:26 BoogieIcfgContainer [2021-11-23 17:28:26,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:28:26,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:28:26,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:28:26,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:28:26,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:28:25" (1/3) ... [2021-11-23 17:28:26,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d069513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:28:26, skipping insertion in model container [2021-11-23 17:28:26,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:25" (2/3) ... [2021-11-23 17:28:26,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d069513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:28:26, skipping insertion in model container [2021-11-23 17:28:26,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:28:26" (3/3) ... [2021-11-23 17:28:26,098 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_non_eq-3.c [2021-11-23 17:28:26,105 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:28:26,105 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:28:26,181 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:28:26,197 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, mAutomataTypeConcurrency=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 [2021-11-23 17:28:26,198 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:28:26,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 17:28:26,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 17:28:26,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:28:26,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:28:26,228 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:28:26,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:28:26,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1493244868, now seen corresponding path program 1 times [2021-11-23 17:28:26,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 17:28:26,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874054770] [2021-11-23 17:28:26,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:28:26,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 17:28:26,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 17:28:26,307 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:28:26,313 INFO L158 Benchmark]: Toolchain (without parser) took 946.60ms. Allocated memory is still 92.3MB. Free memory was 50.7MB in the beginning and 47.7MB in the end (delta: 3.0MB). Peak memory consumption was 1.9MB. Max. memory is 16.1GB. [2021-11-23 17:28:26,314 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 92.3MB. Free memory was 67.2MB in the beginning and 67.2MB in the end (delta: 24.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:28:26,315 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.81ms. Allocated memory is still 92.3MB. Free memory was 50.4MB in the beginning and 68.3MB in the end (delta: -17.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:28:26,316 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.56ms. Allocated memory is still 92.3MB. Free memory was 68.3MB in the beginning and 66.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:28:26,316 INFO L158 Benchmark]: Boogie Preprocessor took 32.88ms. Allocated memory is still 92.3MB. Free memory was 66.7MB in the beginning and 66.0MB in the end (delta: 711.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:28:26,317 INFO L158 Benchmark]: RCFGBuilder took 352.95ms. Allocated memory is still 92.3MB. Free memory was 65.8MB in the beginning and 57.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:28:26,318 INFO L158 Benchmark]: TraceAbstraction took 221.32ms. Allocated memory is still 92.3MB. Free memory was 56.5MB in the beginning and 47.7MB in the end (delta: 8.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 17:28:26,322 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 92.3MB. Free memory was 67.2MB in the beginning and 67.2MB in the end (delta: 24.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.81ms. Allocated memory is still 92.3MB. Free memory was 50.4MB in the beginning and 68.3MB in the end (delta: -17.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.56ms. Allocated memory is still 92.3MB. Free memory was 68.3MB in the beginning and 66.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.88ms. Allocated memory is still 92.3MB. Free memory was 66.7MB in the beginning and 66.0MB in the end (delta: 711.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 352.95ms. Allocated memory is still 92.3MB. Free memory was 65.8MB in the beginning and 57.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 221.32ms. Allocated memory is still 92.3MB. Free memory was 56.5MB in the beginning and 47.7MB in the end (delta: 8.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:28:26,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_non_eq-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl --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 41c9705134faa9e28eba566071c8a538a7da12abc5ccedccf4ff4ee4f7173585 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:28:29,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:28:29,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:28:29,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:28:29,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:28:29,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:28:29,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:28:29,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:28:29,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:28:29,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:28:29,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:28:29,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:28:29,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:28:29,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:28:29,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:28:29,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:28:29,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:28:29,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:28:29,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:28:29,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:28:29,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:28:29,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:28:29,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:28:29,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:28:29,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:28:29,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:28:29,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:28:29,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:28:29,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:28:29,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:28:29,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:28:29,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:28:29,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:28:29,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:28:29,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:28:29,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:28:29,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:28:29,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:28:29,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:28:29,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:28:29,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:28:29,257 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:28:29,292 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:28:29,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:28:29,293 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:28:29,294 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:28:29,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:28:29,296 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:28:29,296 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:28:29,296 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:28:29,297 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:28:29,297 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:28:29,298 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:28:29,299 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:28:29,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:28:29,301 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:28:29,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:28:29,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:28:29,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:28:29,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:28:29,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:28:29,303 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:28:29,303 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:28:29,303 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:28:29,303 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:28:29,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:28:29,304 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:28:29,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:28:29,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:28:29,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:28:29,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:28:29,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:28:29,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:28:29,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:28:29,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:28:29,307 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:28:29,307 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:28:29,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:28:29,308 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:28:29,308 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:28:29,308 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_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41c9705134faa9e28eba566071c8a538a7da12abc5ccedccf4ff4ee4f7173585 [2021-11-23 17:28:29,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:28:29,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:28:29,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:28:29,787 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:28:29,787 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:28:29,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/recursive-simple/sum_non_eq-3.c [2021-11-23 17:28:29,881 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/data/4a6a08c73/c75c361e0efa41dc9ddcb7cb7bf74dd4/FLAGcba6071b5 [2021-11-23 17:28:30,441 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:28:30,442 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/sv-benchmarks/c/recursive-simple/sum_non_eq-3.c [2021-11-23 17:28:30,449 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/data/4a6a08c73/c75c361e0efa41dc9ddcb7cb7bf74dd4/FLAGcba6071b5 [2021-11-23 17:28:30,762 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/data/4a6a08c73/c75c361e0efa41dc9ddcb7cb7bf74dd4 [2021-11-23 17:28:30,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:28:30,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:28:30,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:28:30,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:28:30,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:28:30,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:28:30" (1/1) ... [2021-11-23 17:28:30,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1325268e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:30, skipping insertion in model container [2021-11-23 17:28:30,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:28:30" (1/1) ... [2021-11-23 17:28:30,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:28:30,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:28:30,969 WARN L230 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_2ba5a039-862c-4c72-b335-00e3a637318e/sv-benchmarks/c/recursive-simple/sum_non_eq-3.c[628,641] [2021-11-23 17:28:30,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:28:30,987 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:28:31,007 WARN L230 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_2ba5a039-862c-4c72-b335-00e3a637318e/sv-benchmarks/c/recursive-simple/sum_non_eq-3.c[628,641] [2021-11-23 17:28:31,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:28:31,028 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:28:31,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:31 WrapperNode [2021-11-23 17:28:31,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:28:31,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:28:31,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:28:31,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:28:31,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:31" (1/1) ... [2021-11-23 17:28:31,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:31" (1/1) ... [2021-11-23 17:28:31,073 INFO L137 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2021-11-23 17:28:31,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:28:31,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:28:31,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:28:31,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:28:31,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:31" (1/1) ... [2021-11-23 17:28:31,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:31" (1/1) ... [2021-11-23 17:28:31,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:31" (1/1) ... [2021-11-23 17:28:31,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:31" (1/1) ... [2021-11-23 17:28:31,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:31" (1/1) ... [2021-11-23 17:28:31,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:31" (1/1) ... [2021-11-23 17:28:31,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:31" (1/1) ... [2021-11-23 17:28:31,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:28:31,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:28:31,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:28:31,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:28:31,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:31" (1/1) ... [2021-11-23 17:28:31,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:28:31,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:28:31,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:28:31,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:28:31,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:28:31,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:28:31,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:28:31,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:28:31,220 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2021-11-23 17:28:31,220 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2021-11-23 17:28:31,333 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:28:31,335 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:28:31,501 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:28:31,508 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:28:31,508 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 17:28:31,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:28:31 BoogieIcfgContainer [2021-11-23 17:28:31,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:28:31,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:28:31,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:28:31,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:28:31,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:28:30" (1/3) ... [2021-11-23 17:28:31,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b816367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:28:31, skipping insertion in model container [2021-11-23 17:28:31,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:31" (2/3) ... [2021-11-23 17:28:31,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b816367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:28:31, skipping insertion in model container [2021-11-23 17:28:31,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:28:31" (3/3) ... [2021-11-23 17:28:31,526 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_non_eq-3.c [2021-11-23 17:28:31,537 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:28:31,538 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:28:31,603 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:28:31,612 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, mAutomataTypeConcurrency=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 [2021-11-23 17:28:31,612 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:28:31,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 17:28:31,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 17:28:31,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:28:31,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:28:31,659 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:28:31,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:28:31,665 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2021-11-23 17:28:31,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:28:31,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985518346] [2021-11-23 17:28:31,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:28:31,680 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:28:31,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:28:31,684 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:28:31,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:28:31,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:28:31,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:28:31,929 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:28:31,934 INFO L158 Benchmark]: Toolchain (without parser) took 1167.05ms. Allocated memory is still 69.2MB. Free memory was 51.7MB in the beginning and 41.6MB in the end (delta: 10.1MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2021-11-23 17:28:31,935 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 69.2MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:28:31,936 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.42ms. Allocated memory is still 69.2MB. Free memory was 51.4MB in the beginning and 41.7MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:28:31,937 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.69ms. Allocated memory is still 69.2MB. Free memory was 41.7MB in the beginning and 40.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:28:31,938 INFO L158 Benchmark]: Boogie Preprocessor took 43.12ms. Allocated memory is still 69.2MB. Free memory was 40.3MB in the beginning and 39.3MB in the end (delta: 966.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:28:31,939 INFO L158 Benchmark]: RCFGBuilder took 391.47ms. Allocated memory is still 69.2MB. Free memory was 39.3MB in the beginning and 49.9MB in the end (delta: -10.6MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2021-11-23 17:28:31,940 INFO L158 Benchmark]: TraceAbstraction took 413.51ms. Allocated memory is still 69.2MB. Free memory was 49.5MB in the beginning and 41.6MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:28:31,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 69.2MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.42ms. Allocated memory is still 69.2MB. Free memory was 51.4MB in the beginning and 41.7MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.69ms. Allocated memory is still 69.2MB. Free memory was 41.7MB in the beginning and 40.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.12ms. Allocated memory is still 69.2MB. Free memory was 40.3MB in the beginning and 39.3MB in the end (delta: 966.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 391.47ms. Allocated memory is still 69.2MB. Free memory was 39.3MB in the beginning and 49.9MB in the end (delta: -10.6MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * TraceAbstraction took 413.51ms. Allocated memory is still 69.2MB. Free memory was 49.5MB in the beginning and 41.6MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:28:32,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a039-862c-4c72-b335-00e3a637318e/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable