./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.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_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/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_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/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_edae4797-5b44-4d37-b6e8-4a94bfa63984/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 5a58a565ed7a29809aaccd8966118196fec0a697f2fc6db04cc260beeab4df83 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:14:02,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:14:02,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:14:03,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:14:03,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:14:03,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:14:03,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:14:03,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:14:03,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:14:03,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:14:03,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:14:03,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:14:03,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:14:03,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:14:03,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:14:03,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:14:03,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:14:03,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:14:03,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:14:03,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:14:03,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:14:03,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:14:03,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:14:03,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:14:03,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:14:03,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:14:03,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:14:03,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:14:03,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:14:03,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:14:03,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:14:03,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:14:03,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:14:03,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:14:03,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:14:03,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:14:03,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:14:03,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:14:03,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:14:03,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:14:03,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:14:03,079 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:14:03,122 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:14:03,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:14:03,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:14:03,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:14:03,123 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:14:03,123 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:14:03,124 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:14:03,124 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:14:03,124 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:14:03,132 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:14:03,133 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:14:03,133 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:14:03,133 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:14:03,134 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:14:03,134 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:14:03,134 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:14:03,134 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:14:03,135 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:14:03,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:14:03,136 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:14:03,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:14:03,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:14:03,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:14:03,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:14:03,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:14:03,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:14:03,139 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:14:03,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:14:03,140 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:14:03,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:14:03,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:14:03,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:14:03,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:14:03,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:14:03,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:14:03,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:14:03,142 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:14:03,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:14:03,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:14:03,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:14:03,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:14:03,143 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_edae4797-5b44-4d37-b6e8-4a94bfa63984/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a58a565ed7a29809aaccd8966118196fec0a697f2fc6db04cc260beeab4df83 [2021-11-23 17:14:03,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:14:03,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:14:03,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:14:03,537 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:14:03,537 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:14:03,539 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2021-11-23 17:14:03,608 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/data/6ff900145/5e5249c7bb6c47fd999e65daa1a83213/FLAGe8fe86247 [2021-11-23 17:14:04,112 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:14:04,114 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2021-11-23 17:14:04,126 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/data/6ff900145/5e5249c7bb6c47fd999e65daa1a83213/FLAGe8fe86247 [2021-11-23 17:14:04,482 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/data/6ff900145/5e5249c7bb6c47fd999e65daa1a83213 [2021-11-23 17:14:04,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:14:04,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:14:04,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:14:04,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:14:04,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:14:04,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40e79350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04, skipping insertion in model container [2021-11-23 17:14:04,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:14:04,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:14:04,742 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_edae4797-5b44-4d37-b6e8-4a94bfa63984/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c[838,851] [2021-11-23 17:14:04,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:14:04,756 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:14:04,773 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_edae4797-5b44-4d37-b6e8-4a94bfa63984/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c[838,851] [2021-11-23 17:14:04,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:14:04,790 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:14:04,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04 WrapperNode [2021-11-23 17:14:04,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:14:04,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:14:04,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:14:04,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:14:04,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,830 INFO L137 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2021-11-23 17:14:04,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:14:04,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:14:04,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:14:04,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:14:04,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:14:04,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:14:04,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:14:04,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:14:04,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (1/1) ... [2021-11-23 17:14:04,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:14:04,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:14:04,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:14:04,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:14:04,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:14:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2021-11-23 17:14:04,978 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2021-11-23 17:14:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:14:04,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:14:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:14:05,053 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:14:05,056 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:14:05,220 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:14:05,232 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:14:05,234 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 17:14:05,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:14:05 BoogieIcfgContainer [2021-11-23 17:14:05,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:14:05,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:14:05,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:14:05,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:14:05,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:14:04" (1/3) ... [2021-11-23 17:14:05,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c38d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:14:05, skipping insertion in model container [2021-11-23 17:14:05,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:04" (2/3) ... [2021-11-23 17:14:05,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c38d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:14:05, skipping insertion in model container [2021-11-23 17:14:05,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:14:05" (3/3) ... [2021-11-23 17:14:05,246 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2021-11-23 17:14:05,252 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:14:05,253 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:14:05,315 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:14:05,322 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 17:14:05,322 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:14:05,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.4) internal successors, (14), 11 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 17:14:05,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 17:14:05,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:14:05,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:14:05,358 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:14:05,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:14:05,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1546859687, now seen corresponding path program 1 times [2021-11-23 17:14:05,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 17:14:05,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281573337] [2021-11-23 17:14:05,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:05,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 17:14:05,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 17:14:05,433 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 17:14:05,437 INFO L158 Benchmark]: Toolchain (without parser) took 948.94ms. Allocated memory is still 102.8MB. Free memory was 61.1MB in the beginning and 57.4MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:14:05,438 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 102.8MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:14:05,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.56ms. Allocated memory is still 102.8MB. Free memory was 61.0MB in the beginning and 78.5MB in the end (delta: -17.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:14:05,440 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.32ms. Allocated memory is still 102.8MB. Free memory was 78.5MB in the beginning and 77.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:14:05,440 INFO L158 Benchmark]: Boogie Preprocessor took 38.67ms. Allocated memory is still 102.8MB. Free memory was 77.0MB in the beginning and 76.1MB in the end (delta: 910.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:14:05,441 INFO L158 Benchmark]: RCFGBuilder took 366.00ms. Allocated memory is still 102.8MB. Free memory was 76.1MB in the beginning and 66.8MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:14:05,442 INFO L158 Benchmark]: TraceAbstraction took 196.25ms. Allocated memory is still 102.8MB. Free memory was 66.2MB in the beginning and 57.4MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:14:05,446 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 102.8MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.56ms. Allocated memory is still 102.8MB. Free memory was 61.0MB in the beginning and 78.5MB in the end (delta: -17.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.32ms. Allocated memory is still 102.8MB. Free memory was 78.5MB in the beginning and 77.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.67ms. Allocated memory is still 102.8MB. Free memory was 77.0MB in the beginning and 76.1MB in the end (delta: 910.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 366.00ms. Allocated memory is still 102.8MB. Free memory was 76.1MB in the beginning and 66.8MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 196.25ms. Allocated memory is still 102.8MB. Free memory was 66.2MB in the beginning and 57.4MB in the end (delta: 8.8MB). 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 17:14:05,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/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_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/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_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/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_edae4797-5b44-4d37-b6e8-4a94bfa63984/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 5a58a565ed7a29809aaccd8966118196fec0a697f2fc6db04cc260beeab4df83 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:14:08,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:14:08,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:14:08,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:14:08,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:14:08,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:14:08,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:14:08,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:14:08,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:14:08,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:14:08,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:14:08,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:14:08,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:14:08,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:14:08,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:14:08,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:14:08,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:14:08,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:14:08,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:14:08,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:14:08,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:14:08,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:14:08,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:14:08,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:14:08,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:14:08,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:14:08,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:14:08,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:14:08,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:14:08,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:14:08,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:14:08,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:14:08,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:14:08,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:14:08,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:14:08,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:14:08,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:14:08,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:14:08,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:14:08,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:14:08,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:14:08,406 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:14:08,461 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:14:08,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:14:08,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:14:08,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:14:08,463 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:14:08,464 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:14:08,464 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:14:08,464 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:14:08,464 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:14:08,464 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:14:08,466 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:14:08,466 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:14:08,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:14:08,468 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:14:08,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:14:08,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:14:08,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:14:08,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:14:08,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:14:08,470 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:14:08,470 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:14:08,470 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:14:08,470 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:14:08,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:14:08,471 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:14:08,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:14:08,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:14:08,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:14:08,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:14:08,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:14:08,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:14:08,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:14:08,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:14:08,473 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:14:08,474 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:14:08,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:14:08,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:14:08,475 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:14:08,475 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_edae4797-5b44-4d37-b6e8-4a94bfa63984/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a58a565ed7a29809aaccd8966118196fec0a697f2fc6db04cc260beeab4df83 [2021-11-23 17:14:08,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:14:08,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:14:08,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:14:08,936 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:14:08,938 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:14:08,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2021-11-23 17:14:09,019 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/data/98cfc9877/513b1beadc27432f974003902906a705/FLAG83ad268bf [2021-11-23 17:14:09,665 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:14:09,665 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2021-11-23 17:14:09,672 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/data/98cfc9877/513b1beadc27432f974003902906a705/FLAG83ad268bf [2021-11-23 17:14:10,032 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/data/98cfc9877/513b1beadc27432f974003902906a705 [2021-11-23 17:14:10,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:14:10,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:14:10,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:14:10,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:14:10,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:14:10,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:14:10" (1/1) ... [2021-11-23 17:14:10,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3247ee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:10, skipping insertion in model container [2021-11-23 17:14:10,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:14:10" (1/1) ... [2021-11-23 17:14:10,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:14:10,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:14:10,240 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_edae4797-5b44-4d37-b6e8-4a94bfa63984/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c[838,851] [2021-11-23 17:14:10,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:14:10,258 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:14:10,284 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_edae4797-5b44-4d37-b6e8-4a94bfa63984/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c[838,851] [2021-11-23 17:14:10,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:14:10,336 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:14:10,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:10 WrapperNode [2021-11-23 17:14:10,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:14:10,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:14:10,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:14:10,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:14:10,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:10" (1/1) ... [2021-11-23 17:14:10,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:10" (1/1) ... [2021-11-23 17:14:10,378 INFO L137 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2021-11-23 17:14:10,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:14:10,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:14:10,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:14:10,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:14:10,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:10" (1/1) ... [2021-11-23 17:14:10,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:10" (1/1) ... [2021-11-23 17:14:10,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:10" (1/1) ... [2021-11-23 17:14:10,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:10" (1/1) ... [2021-11-23 17:14:10,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:10" (1/1) ... [2021-11-23 17:14:10,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:10" (1/1) ... [2021-11-23 17:14:10,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:10" (1/1) ... [2021-11-23 17:14:10,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:14:10,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:14:10,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:14:10,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:14:10,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:10" (1/1) ... [2021-11-23 17:14:10,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:14:10,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:14:10,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:14:10,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:14:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:14:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2021-11-23 17:14:10,526 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2021-11-23 17:14:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:14:10,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:14:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:14:10,623 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:14:10,624 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:14:10,786 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:14:10,792 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:14:10,793 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 17:14:10,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:14:10 BoogieIcfgContainer [2021-11-23 17:14:10,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:14:10,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:14:10,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:14:10,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:14:10,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:14:10" (1/3) ... [2021-11-23 17:14:10,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4c0295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:14:10, skipping insertion in model container [2021-11-23 17:14:10,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:14:10" (2/3) ... [2021-11-23 17:14:10,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4c0295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:14:10, skipping insertion in model container [2021-11-23 17:14:10,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:14:10" (3/3) ... [2021-11-23 17:14:10,804 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2021-11-23 17:14:10,810 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:14:10,811 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:14:10,881 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:14:10,890 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 17:14:10,890 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:14:10,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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 17:14:10,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 17:14:10,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:14:10,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:14:10,917 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:14:10,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:14:10,923 INFO L85 PathProgramCache]: Analyzing trace with hash -2087939196, now seen corresponding path program 1 times [2021-11-23 17:14:10,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:14:10,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147870548] [2021-11-23 17:14:10,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:10,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:14:10,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:14:10,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:14:10,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:14:11,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:14:11,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:14:11,214 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 17:14:11,219 INFO L158 Benchmark]: Toolchain (without parser) took 1179.66ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 27.1MB in the beginning and 38.2MB in the end (delta: -11.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:14:11,220 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 50.3MB. Free memory was 30.7MB in the beginning and 30.7MB in the end (delta: 38.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:14:11,222 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.35ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 26.8MB in the beginning and 44.3MB in the end (delta: -17.5MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2021-11-23 17:14:11,223 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.89ms. Allocated memory is still 60.8MB. Free memory was 44.3MB in the beginning and 43.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:14:11,223 INFO L158 Benchmark]: Boogie Preprocessor took 40.40ms. Allocated memory is still 60.8MB. Free memory was 43.0MB in the beginning and 41.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:14:11,224 INFO L158 Benchmark]: RCFGBuilder took 374.17ms. Allocated memory is still 60.8MB. Free memory was 41.9MB in the beginning and 33.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:14:11,225 INFO L158 Benchmark]: TraceAbstraction took 419.89ms. Allocated memory is still 60.8MB. Free memory was 32.9MB in the beginning and 38.2MB in the end (delta: -5.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:14:11,230 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 50.3MB. Free memory was 30.7MB in the beginning and 30.7MB in the end (delta: 38.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.35ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 26.8MB in the beginning and 44.3MB in the end (delta: -17.5MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.89ms. Allocated memory is still 60.8MB. Free memory was 44.3MB in the beginning and 43.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.40ms. Allocated memory is still 60.8MB. Free memory was 43.0MB in the beginning and 41.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 374.17ms. Allocated memory is still 60.8MB. Free memory was 41.9MB in the beginning and 33.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 419.89ms. Allocated memory is still 60.8MB. Free memory was 32.9MB in the beginning and 38.2MB in the end (delta: -5.4MB). There was no memory consumed. 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 17:14:11,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edae4797-5b44-4d37-b6e8-4a94bfa63984/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