./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_1_1.i --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_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/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_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_1_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/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_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/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 0fcc04ce578d0111a6c71cbc4293b8197f20da95a3a547b20b6c6dac6e888dc6 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:45:22,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:45:22,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:45:22,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:45:22,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:45:22,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:45:22,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:45:22,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:45:22,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:45:22,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:45:22,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:45:22,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:45:22,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:45:22,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:45:22,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:45:22,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:45:22,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:45:22,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:45:22,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:45:22,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:45:22,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:45:22,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:45:22,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:45:22,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:45:22,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:45:22,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:45:22,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:45:22,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:45:22,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:45:22,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:45:22,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:45:22,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:45:22,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:45:22,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:45:22,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:45:22,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:45:22,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:45:22,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:45:22,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:45:22,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:45:22,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:45:22,686 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:45:22,711 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:45:22,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:45:22,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:45:22,712 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:45:22,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:45:22,713 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:45:22,713 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:45:22,713 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:45:22,714 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:45:22,714 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:45:22,714 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:45:22,714 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:45:22,714 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:45:22,715 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:45:22,715 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:45:22,715 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:45:22,715 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:45:22,716 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:45:22,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:45:22,717 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:45:22,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:45:22,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:45:22,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:45:22,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:45:22,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:45:22,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:45:22,718 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:45:22,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:45:22,719 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:45:22,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:45:22,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:45:22,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:45:22,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:22,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:45:22,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:45:22,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:45:22,721 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:45:22,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:45:22,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:45:22,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:45:22,721 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:45:22,722 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_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fcc04ce578d0111a6c71cbc4293b8197f20da95a3a547b20b6c6dac6e888dc6 [2021-11-23 16:45:23,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:45:23,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:45:23,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:45:23,065 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:45:23,066 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:45:23,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/gcd_3+newton_1_1.i [2021-11-23 16:45:23,143 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/data/f912e517b/7215797ddfc846ada0d52ba0105a55c5/FLAG75dc9cb7c [2021-11-23 16:45:23,609 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:45:23,610 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/sv-benchmarks/c/combinations/gcd_3+newton_1_1.i [2021-11-23 16:45:23,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/data/f912e517b/7215797ddfc846ada0d52ba0105a55c5/FLAG75dc9cb7c [2021-11-23 16:45:23,983 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/data/f912e517b/7215797ddfc846ada0d52ba0105a55c5 [2021-11-23 16:45:23,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:45:23,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:45:23,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:24,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:45:24,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:45:24,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:23" (1/1) ... [2021-11-23 16:45:24,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3caa2a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:24, skipping insertion in model container [2021-11-23 16:45:24,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:23" (1/1) ... [2021-11-23 16:45:24,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:45:24,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:45:24,255 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_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/sv-benchmarks/c/combinations/gcd_3+newton_1_1.i[1226,1239] [2021-11-23 16:45:24,313 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_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/sv-benchmarks/c/combinations/gcd_3+newton_1_1.i[2820,2833] [2021-11-23 16:45:24,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:24,327 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:45:24,348 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_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/sv-benchmarks/c/combinations/gcd_3+newton_1_1.i[1226,1239] [2021-11-23 16:45:24,368 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_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/sv-benchmarks/c/combinations/gcd_3+newton_1_1.i[2820,2833] [2021-11-23 16:45:24,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:24,396 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:45:24,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:24 WrapperNode [2021-11-23 16:45:24,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:24,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:24,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:45:24,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:45:24,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:24" (1/1) ... [2021-11-23 16:45:24,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:24" (1/1) ... [2021-11-23 16:45:24,462 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2021-11-23 16:45:24,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:24,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:45:24,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:45:24,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:45:24,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:24" (1/1) ... [2021-11-23 16:45:24,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:24" (1/1) ... [2021-11-23 16:45:24,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:24" (1/1) ... [2021-11-23 16:45:24,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:24" (1/1) ... [2021-11-23 16:45:24,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:24" (1/1) ... [2021-11-23 16:45:24,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:24" (1/1) ... [2021-11-23 16:45:24,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:24" (1/1) ... [2021-11-23 16:45:24,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:45:24,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:45:24,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:45:24,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:45:24,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:24" (1/1) ... [2021-11-23 16:45:24,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:24,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:45:24,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:45:24,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:45:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:45:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:45:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:45:24,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:45:24,688 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:45:24,689 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:45:24,928 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:45:24,962 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$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 16:45:24,966 INFO L158 Benchmark]: Toolchain (without parser) took 977.98ms. Allocated memory is still 94.4MB. Free memory was 52.7MB in the beginning and 54.6MB in the end (delta: -1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:45:24,966 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory was 69.3MB in the beginning and 69.3MB in the end (delta: 20.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:45:24,967 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.28ms. Allocated memory is still 94.4MB. Free memory was 73.9MB in the beginning and 68.8MB in the end (delta: 5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 16:45:24,968 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.97ms. Allocated memory is still 94.4MB. Free memory was 68.8MB in the beginning and 66.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:45:24,969 INFO L158 Benchmark]: Boogie Preprocessor took 52.31ms. Allocated memory is still 94.4MB. Free memory was 66.9MB in the beginning and 65.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:45:24,970 INFO L158 Benchmark]: RCFGBuilder took 447.14ms. Allocated memory is still 94.4MB. Free memory was 65.7MB in the beginning and 54.6MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 16:45:24,974 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory was 69.3MB in the beginning and 69.3MB in the end (delta: 20.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 403.28ms. Allocated memory is still 94.4MB. Free memory was 73.9MB in the beginning and 68.8MB in the end (delta: 5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.97ms. Allocated memory is still 94.4MB. Free memory was 68.8MB in the beginning and 66.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.31ms. Allocated memory is still 94.4MB. Free memory was 66.9MB in the beginning and 65.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 447.14ms. Allocated memory is still 94.4MB. Free memory was 65.7MB in the beginning and 54.6MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:45:25,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/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_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/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_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_1_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/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_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/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 0fcc04ce578d0111a6c71cbc4293b8197f20da95a3a547b20b6c6dac6e888dc6 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:45:27,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:45:27,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:45:27,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:45:27,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:45:27,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:45:27,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:45:27,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:45:27,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:45:27,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:45:27,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:45:27,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:45:27,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:45:27,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:45:27,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:45:27,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:45:27,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:45:27,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:45:27,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:45:27,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:45:27,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:45:27,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:45:27,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:45:27,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:45:27,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:45:27,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:45:27,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:45:27,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:45:27,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:45:27,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:45:27,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:45:27,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:45:27,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:45:27,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:45:27,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:45:27,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:45:27,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:45:27,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:45:27,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:45:27,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:45:27,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:45:27,674 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:45:27,723 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:45:27,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:45:27,724 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:45:27,724 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:45:27,725 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:45:27,725 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:45:27,726 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:45:27,726 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:45:27,726 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:45:27,726 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:45:27,728 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:45:27,728 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:45:27,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:45:27,730 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:45:27,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:45:27,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:45:27,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:45:27,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:45:27,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:45:27,731 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:45:27,731 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:45:27,732 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:45:27,732 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:45:27,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:45:27,732 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:45:27,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:45:27,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:45:27,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:45:27,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:45:27,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:27,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:45:27,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:45:27,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:45:27,735 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:45:27,735 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:45:27,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:45:27,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:45:27,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:45:27,736 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_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fcc04ce578d0111a6c71cbc4293b8197f20da95a3a547b20b6c6dac6e888dc6 [2021-11-23 16:45:28,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:45:28,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:45:28,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:45:28,178 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:45:28,178 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:45:28,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/gcd_3+newton_1_1.i [2021-11-23 16:45:28,258 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/data/a31bdbadc/dc28e931fd074180b594d8b1f124efb9/FLAGf5d1fae5f [2021-11-23 16:45:28,882 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:45:28,887 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/sv-benchmarks/c/combinations/gcd_3+newton_1_1.i [2021-11-23 16:45:28,896 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/data/a31bdbadc/dc28e931fd074180b594d8b1f124efb9/FLAGf5d1fae5f [2021-11-23 16:45:29,219 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/data/a31bdbadc/dc28e931fd074180b594d8b1f124efb9 [2021-11-23 16:45:29,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:45:29,224 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:45:29,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:29,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:45:29,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:45:29,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:29" (1/1) ... [2021-11-23 16:45:29,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c356dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29, skipping insertion in model container [2021-11-23 16:45:29,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:29" (1/1) ... [2021-11-23 16:45:29,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:45:29,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:45:29,476 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_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/sv-benchmarks/c/combinations/gcd_3+newton_1_1.i[1226,1239] [2021-11-23 16:45:29,538 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_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/sv-benchmarks/c/combinations/gcd_3+newton_1_1.i[2820,2833] [2021-11-23 16:45:29,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:29,568 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:45:29,578 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_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/sv-benchmarks/c/combinations/gcd_3+newton_1_1.i[1226,1239] [2021-11-23 16:45:29,591 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_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/sv-benchmarks/c/combinations/gcd_3+newton_1_1.i[2820,2833] [2021-11-23 16:45:29,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:29,608 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:45:29,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29 WrapperNode [2021-11-23 16:45:29,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:29,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:29,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:45:29,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:45:29,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... [2021-11-23 16:45:29,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... [2021-11-23 16:45:29,654 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2021-11-23 16:45:29,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:29,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:45:29,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:45:29,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:45:29,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... [2021-11-23 16:45:29,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... [2021-11-23 16:45:29,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... [2021-11-23 16:45:29,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... [2021-11-23 16:45:29,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... [2021-11-23 16:45:29,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... [2021-11-23 16:45:29,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... [2021-11-23 16:45:29,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:45:29,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:45:29,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:45:29,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:45:29,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (1/1) ... [2021-11-23 16:45:29,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:29,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:45:29,729 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:45:29,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:45:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:45:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:45:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:45:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:45:29,868 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:45:29,869 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:45:36,224 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:45:36,231 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:45:36,231 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 16:45:36,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:45:36 BoogieIcfgContainer [2021-11-23 16:45:36,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:45:36,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:45:36,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:45:36,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:45:36,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:45:29" (1/3) ... [2021-11-23 16:45:36,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88ae68e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:45:36, skipping insertion in model container [2021-11-23 16:45:36,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:29" (2/3) ... [2021-11-23 16:45:36,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88ae68e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:45:36, skipping insertion in model container [2021-11-23 16:45:36,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:45:36" (3/3) ... [2021-11-23 16:45:36,242 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_1.i [2021-11-23 16:45:36,248 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:45:36,248 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 16:45:36,307 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:45:36,314 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 16:45:36,315 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 16:45:36,329 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:36,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 16:45:36,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:36,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:36,336 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:45:36,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:36,342 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2021-11-23 16:45:36,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:36,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563173755] [2021-11-23 16:45:36,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:36,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:36,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:36,368 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:36,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:45:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:37,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 16:45:37,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:37,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:45:37,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:37,718 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:37,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563173755] [2021-11-23 16:45:37,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563173755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:37,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:37,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 16:45:37,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164151177] [2021-11-23 16:45:37,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:37,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 16:45:37,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:37,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 16:45:37,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 16:45:37,754 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-23 16:45:37,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:37,771 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-11-23 16:45:37,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 16:45:37,773 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 16:45:37,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:37,782 INFO L225 Difference]: With dead ends: 47 [2021-11-23 16:45:37,782 INFO L226 Difference]: Without dead ends: 19 [2021-11-23 16:45:37,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 16:45:37,790 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:37,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 16:45:37,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-23 16:45:37,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-23 16:45:37,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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) [2021-11-23 16:45:37,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-23 16:45:37,820 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2021-11-23 16:45:37,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:37,820 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-23 16:45:37,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-23 16:45:37,821 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-23 16:45:37,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 16:45:37,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:37,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:37,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 16:45:38,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:38,023 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:45:38,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:38,024 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2021-11-23 16:45:38,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:38,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919525700] [2021-11-23 16:45:38,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:38,026 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:38,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:38,029 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:38,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7805da51-f9cf-4f44-ad20-4b472dd6d5f8/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process