./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label37.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb3c66f-47d9-4cab-b871-7576cefec746/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb3c66f-47d9-4cab-b871-7576cefec746/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb3c66f-47d9-4cab-b871-7576cefec746/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb3c66f-47d9-4cab-b871-7576cefec746/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label37.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb3c66f-47d9-4cab-b871-7576cefec746/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb3c66f-47d9-4cab-b871-7576cefec746/bin/utaipan-UbGMyvGFUs --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 3aa53faff32d3cefd7e292e9c760c2842331eee742cc346d26d4662e48b4b358 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:15:38,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:15:38,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:15:38,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:15:38,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:15:38,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:15:38,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:15:38,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:15:38,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:15:38,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:15:38,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:15:38,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:15:38,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:15:38,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:15:38,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:15:38,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:15:38,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:15:38,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:15:38,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:15:38,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:15:38,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:15:38,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:15:38,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:15:38,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:15:38,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:15:38,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:15:38,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:15:38,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:15:38,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:15:38,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:15:38,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:15:38,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:15:38,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:15:38,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:15:38,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:15:38,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:15:38,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:15:38,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:15:38,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:15:38,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:15:38,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:15:38,645 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb3c66f-47d9-4cab-b871-7576cefec746/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:15:38,695 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:15:38,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:15:38,699 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:15:38,700 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:15:38,700 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:15:38,700 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:15:38,700 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:15:38,701 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:15:38,701 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:15:38,701 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:15:38,702 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:15:38,702 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:15:38,703 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:15:38,703 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:15:38,703 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:15:38,703 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:15:38,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:15:38,705 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:15:38,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:15:38,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:15:38,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:15:38,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:15:38,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:15:38,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:15:38,706 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:15:38,706 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:15:38,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:15:38,707 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:15:38,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:15:38,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:15:38,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:15:38,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:15:38,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:15:38,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:15:38,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:15:38,710 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:15:38,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:15:38,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:15:38,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:15:38,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:15:38,711 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_3eb3c66f-47d9-4cab-b871-7576cefec746/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb3c66f-47d9-4cab-b871-7576cefec746/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3aa53faff32d3cefd7e292e9c760c2842331eee742cc346d26d4662e48b4b358 [2021-11-19 14:15:39,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:15:39,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:15:39,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:15:39,084 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:15:39,085 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:15:39,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb3c66f-47d9-4cab-b871-7576cefec746/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/eca-rers2012/Problem07_label37.c [2021-11-19 14:15:39,156 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb3c66f-47d9-4cab-b871-7576cefec746/bin/utaipan-UbGMyvGFUs/data/a6f30617a/af22d2d37af94cd48a4c0633d52d6276/FLAGf3af9f273 [2021-11-19 14:15:41,508 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:15:41,508 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb3c66f-47d9-4cab-b871-7576cefec746/sv-benchmarks/c/eca-rers2012/Problem07_label37.c [2021-11-19 14:15:41,654 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb3c66f-47d9-4cab-b871-7576cefec746/bin/utaipan-UbGMyvGFUs/data/a6f30617a/af22d2d37af94cd48a4c0633d52d6276/FLAGf3af9f273 [2021-11-19 14:15:41,984 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb3c66f-47d9-4cab-b871-7576cefec746/bin/utaipan-UbGMyvGFUs/data/a6f30617a/af22d2d37af94cd48a4c0633d52d6276 [2021-11-19 14:15:41,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:15:41,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:15:41,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:15:41,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:15:41,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:15:41,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:15:41" (1/1) ... [2021-11-19 14:15:41,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78110f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:41, skipping insertion in model container [2021-11-19 14:15:41,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:15:41" (1/1) ... [2021-11-19 14:15:42,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:15:43,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:15:54,411 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_3eb3c66f-47d9-4cab-b871-7576cefec746/sv-benchmarks/c/eca-rers2012/Problem07_label37.c[2770691,2770704] [2021-11-19 14:15:54,486 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:15:54,495 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:16:02,238 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_3eb3c66f-47d9-4cab-b871-7576cefec746/sv-benchmarks/c/eca-rers2012/Problem07_label37.c[2770691,2770704] [2021-11-19 14:16:02,249 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:16:04,098 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:16:04,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:04 WrapperNode [2021-11-19 14:16:04,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:16:04,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:16:04,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:16:04,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:16:04,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:04" (1/1) ... [2021-11-19 14:16:05,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:04" (1/1) ... [2021-11-19 14:16:08,068 INFO L137 Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773 [2021-11-19 14:16:08,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:16:08,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:16:08,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:16:08,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:16:08,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:04" (1/1) ... [2021-11-19 14:16:08,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:04" (1/1) ... [2021-11-19 14:16:08,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:04" (1/1) ... [2021-11-19 14:16:08,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:04" (1/1) ... [2021-11-19 14:16:10,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:04" (1/1) ... [2021-11-19 14:16:10,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:04" (1/1) ... [2021-11-19 14:16:10,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:04" (1/1) ... [2021-11-19 14:16:11,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:16:11,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:16:11,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:16:11,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:16:11,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:04" (1/1) ... [2021-11-19 14:16:11,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:16:11,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb3c66f-47d9-4cab-b871-7576cefec746/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:16:11,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb3c66f-47d9-4cab-b871-7576cefec746/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:16:11,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb3c66f-47d9-4cab-b871-7576cefec746/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:16:11,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:16:11,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 14:16:11,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:16:11,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:16:11,268 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:16:11,270 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:16:47,637 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:16:48,972 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:16:48,973 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:16:48,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:16:48 BoogieIcfgContainer [2021-11-19 14:16:48,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:16:48,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:16:48,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:16:48,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:16:48,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:15:41" (1/3) ... [2021-11-19 14:16:48,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93ed81e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:16:48, skipping insertion in model container [2021-11-19 14:16:48,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:16:04" (2/3) ... [2021-11-19 14:16:48,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93ed81e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:16:48, skipping insertion in model container [2021-11-19 14:16:48,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:16:48" (3/3) ... [2021-11-19 14:16:48,996 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem07_label37.c [2021-11-19 14:16:49,002 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:16:49,003 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:16:49,107 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:16:49,117 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 [2021-11-19 14:16:49,118 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:16:49,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 10135 states, 10133 states have (on average 1.9951643146156124) internal successors, (20217), 10134 states have internal predecessors, (20217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:16:50,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10086 [2021-11-19 14:16:50,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:16:50,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:16:50,488 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:16:50,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:16:50,502 INFO L85 PathProgramCache]: Analyzing trace with hash 64786552, now seen corresponding path program 1 times [2021-11-19 14:16:50,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:16:50,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155703222] [2021-11-19 14:16:50,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:16:50,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:16:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:17:20,015 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:17:20,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155703222] [2021-11-19 14:17:20,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155703222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:20,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:20,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 14:17:20,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896800956] [2021-11-19 14:17:20,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:20,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:17:20,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:17:20,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:17:20,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:20,103 INFO L87 Difference]: Start difference. First operand has 10135 states, 10133 states have (on average 1.9951643146156124) internal successors, (20217), 10134 states have internal predecessors, (20217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:57,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:57,327 INFO L93 Difference]: Finished difference Result 30401 states and 60647 transitions. [2021-11-19 14:17:57,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:17:57,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10085 [2021-11-19 14:17:57,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:57,516 INFO L225 Difference]: With dead ends: 30401 [2021-11-19 14:17:57,516 INFO L226 Difference]: Without dead ends: 20263 [2021-11-19 14:17:57,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:57,543 INFO L933 BasicCegarLoop]: 4042 mSDtfsCounter, 416 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 30830 mSolverCounterSat, 12469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 4092 SdHoareTripleChecker+Invalid, 43299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12469 IncrementalHoareTripleChecker+Valid, 30830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:57,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 4092 Invalid, 43299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12469 Valid, 30830 Invalid, 0 Unknown, 0 Unchecked, 36.3s Time] [2021-11-19 14:17:57,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20263 states. [2021-11-19 14:17:58,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20263 to 20263. [2021-11-19 14:17:58,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20263 states, 20262 states have (on average 1.799279439344586) internal successors, (36457), 20262 states have internal predecessors, (36457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:58,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20263 states to 20263 states and 36457 transitions. [2021-11-19 14:17:58,245 INFO L78 Accepts]: Start accepts. Automaton has 20263 states and 36457 transitions. Word has length 10085 [2021-11-19 14:17:58,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:58,270 INFO L470 AbstractCegarLoop]: Abstraction has 20263 states and 36457 transitions. [2021-11-19 14:17:58,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:17:58,274 INFO L276 IsEmpty]: Start isEmpty. Operand 20263 states and 36457 transitions. [2021-11-19 14:17:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10090 [2021-11-19 14:17:59,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:59,207 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:59,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 14:17:59,208 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:17:59,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:59,213 INFO L85 PathProgramCache]: Analyzing trace with hash 482773664, now seen corresponding path program 1 times [2021-11-19 14:17:59,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:17:59,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679661594] [2021-11-19 14:17:59,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:59,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:18:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat