./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_1_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_1_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh --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 96ec2e8436d28d80fc74b2bfe826a0c3f658cac9b1711d8b968fe796010eaf24 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:35:41,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:35:41,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:35:41,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:35:41,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:35:41,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:35:41,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:35:41,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:35:41,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:35:41,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:35:41,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:35:41,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:35:41,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:35:41,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:35:41,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:35:41,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:35:41,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:35:41,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:35:41,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:35:41,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:35:41,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:35:41,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:35:41,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:35:41,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:35:41,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:35:41,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:35:41,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:35:41,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:35:41,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:35:41,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:35:41,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:35:41,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:35:41,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:35:41,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:35:41,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:35:41,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:35:41,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:35:41,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:35:41,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:35:41,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:35:41,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:35:41,501 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 09:35:41,520 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:35:41,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:35:41,521 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:35:41,521 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:35:41,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:35:41,522 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:35:41,522 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:35:41,522 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:35:41,522 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:35:41,522 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:35:41,528 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:35:41,528 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:35:41,528 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:35:41,528 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:35:41,528 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:35:41,529 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:35:41,529 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:35:41,529 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:35:41,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:35:41,530 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:35:41,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:35:41,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:35:41,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:35:41,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:35:41,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:35:41,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:35:41,531 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:35:41,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:35:41,531 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:35:41,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:35:41,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:35:41,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:35:41,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:35:41,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:35:41,532 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:35:41,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:35:41,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:35:41,532 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:35:41,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:35:41,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:35:41,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:35:41,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96ec2e8436d28d80fc74b2bfe826a0c3f658cac9b1711d8b968fe796010eaf24 [2022-12-14 09:35:41,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:35:41,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:35:41,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:35:41,712 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:35:41,712 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:35:41,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/combinations/gcd_3+newton_1_2.i [2022-12-14 09:35:44,209 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:35:44,370 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:35:44,370 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i [2022-12-14 09:35:44,377 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/data/d80e732ee/f237939f516641259b385aa18a3b1416/FLAG231968bc0 [2022-12-14 09:35:44,775 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/data/d80e732ee/f237939f516641259b385aa18a3b1416 [2022-12-14 09:35:44,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:35:44,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:35:44,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:35:44,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:35:44,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:35:44,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:35:44" (1/1) ... [2022-12-14 09:35:44,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@478a8dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:44, skipping insertion in model container [2022-12-14 09:35:44,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:35:44" (1/1) ... [2022-12-14 09:35:44,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:35:44,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:35:44,932 WARN L237 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_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i[1226,1239] [2022-12-14 09:35:44,955 WARN L237 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_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i[2820,2833] [2022-12-14 09:35:44,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:35:44,968 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:35:44,979 WARN L237 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_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i[1226,1239] [2022-12-14 09:35:44,989 WARN L237 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_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i[2820,2833] [2022-12-14 09:35:44,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:35:45,003 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:35:45,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:45 WrapperNode [2022-12-14 09:35:45,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:35:45,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:35:45,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:35:45,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:35:45,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:45" (1/1) ... [2022-12-14 09:35:45,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:45" (1/1) ... [2022-12-14 09:35:45,038 INFO L138 Inliner]: procedures = 27, calls = 22, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 86 [2022-12-14 09:35:45,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:35:45,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:35:45,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:35:45,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:35:45,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:45" (1/1) ... [2022-12-14 09:35:45,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:45" (1/1) ... [2022-12-14 09:35:45,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:45" (1/1) ... [2022-12-14 09:35:45,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:45" (1/1) ... [2022-12-14 09:35:45,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:45" (1/1) ... [2022-12-14 09:35:45,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:45" (1/1) ... [2022-12-14 09:35:45,059 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:45" (1/1) ... [2022-12-14 09:35:45,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:45" (1/1) ... [2022-12-14 09:35:45,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:35:45,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:35:45,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:35:45,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:35:45,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:45" (1/1) ... [2022-12-14 09:35:45,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:35:45,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:35:45,089 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:35:45,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:35:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:35:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:35:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:35:45,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:35:45,182 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:35:45,185 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:35:45,297 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:35:45,343 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:35:45,343 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 09:35:45,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:35:45 BoogieIcfgContainer [2022-12-14 09:35:45,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:35:45,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:35:45,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:35:45,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:35:45,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:35:44" (1/3) ... [2022-12-14 09:35:45,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3fcd76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:35:45, skipping insertion in model container [2022-12-14 09:35:45,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:45" (2/3) ... [2022-12-14 09:35:45,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3fcd76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:35:45, skipping insertion in model container [2022-12-14 09:35:45,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:35:45" (3/3) ... [2022-12-14 09:35:45,352 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_2.i [2022-12-14 09:35:45,367 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:35:45,367 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 09:35:45,403 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:35:45,410 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46fdd2ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:35:45,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 09:35:45,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-12-14 09:35:45,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 09:35:45,421 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:35:45,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 09:35:45,422 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:35:45,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:35:45,430 INFO L85 PathProgramCache]: Analyzing trace with hash 3514600, now seen corresponding path program 1 times [2022-12-14 09:35:45,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:35:45,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869950217] [2022-12-14 09:35:45,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:35:45,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:35:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:35:45,521 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 09:35:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:35:45,543 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 09:35:45,545 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 09:35:45,546 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-14 09:35:45,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-14 09:35:45,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:35:45,551 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 09:35:45,554 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 09:35:45,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 09:35:45 BoogieIcfgContainer [2022-12-14 09:35:45,567 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 09:35:45,568 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 09:35:45,568 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 09:35:45,568 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 09:35:45,568 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:35:45" (3/4) ... [2022-12-14 09:35:45,571 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 09:35:45,571 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 09:35:45,572 INFO L158 Benchmark]: Toolchain (without parser) took 789.88ms. Allocated memory is still 157.3MB. Free memory was 127.4MB in the beginning and 82.3MB in the end (delta: 45.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-12-14 09:35:45,572 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 157.3MB. Free memory is still 128.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:35:45,572 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.06ms. Allocated memory is still 157.3MB. Free memory was 126.9MB in the beginning and 115.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 09:35:45,573 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.06ms. Allocated memory is still 157.3MB. Free memory was 115.7MB in the beginning and 113.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:35:45,573 INFO L158 Benchmark]: Boogie Preprocessor took 23.64ms. Allocated memory is still 157.3MB. Free memory was 113.8MB in the beginning and 112.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:35:45,573 INFO L158 Benchmark]: RCFGBuilder took 282.46ms. Allocated memory is still 157.3MB. Free memory was 112.7MB in the beginning and 97.0MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 09:35:45,574 INFO L158 Benchmark]: TraceAbstraction took 220.07ms. Allocated memory is still 157.3MB. Free memory was 96.5MB in the beginning and 82.8MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 09:35:45,574 INFO L158 Benchmark]: Witness Printer took 3.15ms. Allocated memory is still 157.3MB. Free memory was 82.8MB in the beginning and 82.3MB in the end (delta: 518.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:35:45,576 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 157.3MB. Free memory is still 128.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.06ms. Allocated memory is still 157.3MB. Free memory was 126.9MB in the beginning and 115.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.06ms. Allocated memory is still 157.3MB. Free memory was 115.7MB in the beginning and 113.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.64ms. Allocated memory is still 157.3MB. Free memory was 113.8MB in the beginning and 112.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 282.46ms. Allocated memory is still 157.3MB. Free memory was 112.7MB in the beginning and 97.0MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 220.07ms. Allocated memory is still 157.3MB. Free memory was 96.5MB in the beginning and 82.8MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 3.15ms. Allocated memory is still 157.3MB. Free memory was 82.8MB in the beginning and 82.3MB in the end (delta: 518.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 102]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 80. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=109] [L102] reach_error() VAL [IN=109] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 09:35:45,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_1_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh --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 96ec2e8436d28d80fc74b2bfe826a0c3f658cac9b1711d8b968fe796010eaf24 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:35:47,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:35:47,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:35:47,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:35:47,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:35:47,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:35:47,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:35:47,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:35:47,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:35:47,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:35:47,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:35:47,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:35:47,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:35:47,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:35:47,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:35:47,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:35:47,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:35:47,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:35:47,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:35:47,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:35:47,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:35:47,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:35:47,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:35:47,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:35:47,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:35:47,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:35:47,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:35:47,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:35:47,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:35:47,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:35:47,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:35:47,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:35:47,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:35:47,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:35:47,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:35:47,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:35:47,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:35:47,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:35:47,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:35:47,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:35:47,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:35:47,226 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 09:35:47,250 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:35:47,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:35:47,250 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:35:47,250 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:35:47,251 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:35:47,251 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:35:47,251 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:35:47,252 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:35:47,252 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:35:47,252 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:35:47,252 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:35:47,252 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:35:47,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:35:47,253 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:35:47,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:35:47,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:35:47,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:35:47,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:35:47,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:35:47,254 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 09:35:47,255 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 09:35:47,255 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 09:35:47,255 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:35:47,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:35:47,255 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:35:47,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:35:47,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:35:47,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 09:35:47,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:35:47,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:35:47,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:35:47,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:35:47,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:35:47,257 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 09:35:47,257 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 09:35:47,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:35:47,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:35:47,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 09:35:47,258 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_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96ec2e8436d28d80fc74b2bfe826a0c3f658cac9b1711d8b968fe796010eaf24 [2022-12-14 09:35:47,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:35:47,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:35:47,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:35:47,507 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:35:47,507 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:35:47,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/combinations/gcd_3+newton_1_2.i [2022-12-14 09:35:50,107 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:35:50,236 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:35:50,236 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i [2022-12-14 09:35:50,242 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/data/11bbc52cd/cdf583a647d64a649449e76662d07dbd/FLAG5caa5ee69 [2022-12-14 09:35:50,252 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/data/11bbc52cd/cdf583a647d64a649449e76662d07dbd [2022-12-14 09:35:50,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:35:50,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:35:50,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:35:50,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:35:50,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:35:50,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:35:50" (1/1) ... [2022-12-14 09:35:50,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3355a56c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:50, skipping insertion in model container [2022-12-14 09:35:50,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:35:50" (1/1) ... [2022-12-14 09:35:50,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:35:50,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:35:50,389 WARN L237 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_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i[1226,1239] [2022-12-14 09:35:50,407 WARN L237 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_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i[2820,2833] [2022-12-14 09:35:50,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:35:50,418 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:35:50,428 WARN L237 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_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i[1226,1239] [2022-12-14 09:35:50,435 WARN L237 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_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/sv-benchmarks/c/combinations/gcd_3+newton_1_2.i[2820,2833] [2022-12-14 09:35:50,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:35:50,447 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:35:50,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:50 WrapperNode [2022-12-14 09:35:50,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:35:50,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:35:50,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:35:50,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:35:50,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:50" (1/1) ... [2022-12-14 09:35:50,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:50" (1/1) ... [2022-12-14 09:35:50,479 INFO L138 Inliner]: procedures = 28, calls = 22, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 81 [2022-12-14 09:35:50,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:35:50,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:35:50,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:35:50,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:35:50,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:50" (1/1) ... [2022-12-14 09:35:50,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:50" (1/1) ... [2022-12-14 09:35:50,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:50" (1/1) ... [2022-12-14 09:35:50,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:50" (1/1) ... [2022-12-14 09:35:50,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:50" (1/1) ... [2022-12-14 09:35:50,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:50" (1/1) ... [2022-12-14 09:35:50,499 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:50" (1/1) ... [2022-12-14 09:35:50,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:50" (1/1) ... [2022-12-14 09:35:50,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:35:50,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:35:50,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:35:50,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:35:50,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:50" (1/1) ... [2022-12-14 09:35:50,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:35:50,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:35:50,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:35:50,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:35:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:35:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 09:35:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:35:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:35:50,639 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:35:50,640 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:35:57,218 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:35:57,223 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:35:57,223 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 09:35:57,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:35:57 BoogieIcfgContainer [2022-12-14 09:35:57,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:35:57,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:35:57,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:35:57,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:35:57,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:35:50" (1/3) ... [2022-12-14 09:35:57,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7cc489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:35:57, skipping insertion in model container [2022-12-14 09:35:57,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:35:50" (2/3) ... [2022-12-14 09:35:57,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7cc489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:35:57, skipping insertion in model container [2022-12-14 09:35:57,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:35:57" (3/3) ... [2022-12-14 09:35:57,231 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_2.i [2022-12-14 09:35:57,246 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:35:57,246 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 09:35:57,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:35:57,283 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@30be8bf3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:35:57,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 09:35:57,286 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) [2022-12-14 09:35:57,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 09:35:57,290 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:35:57,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:35:57,291 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:35:57,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:35:57,295 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-12-14 09:35:57,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 09:35:57,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098515581] [2022-12-14 09:35:57,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:35:57,304 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:35:57,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 09:35:57,305 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 09:35:57,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 09:35:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:35:58,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 09:35:58,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:35:58,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:35:58,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:35:58,416 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 09:35:58,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098515581] [2022-12-14 09:35:58,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098515581] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:35:58,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:35:58,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:35:58,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517743240] [2022-12-14 09:35:58,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:35:58,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 09:35:58,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 09:35:58,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 09:35:58,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 09:35:58,442 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) [2022-12-14 09:35:58,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:35:58,454 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-12-14 09:35:58,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 09:35:58,456 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 [2022-12-14 09:35:58,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:35:58,461 INFO L225 Difference]: With dead ends: 47 [2022-12-14 09:35:58,461 INFO L226 Difference]: Without dead ends: 19 [2022-12-14 09:35:58,462 INFO L412 NwaCegarLoop]: 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 [2022-12-14 09:35:58,465 INFO L413 NwaCegarLoop]: 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 [2022-12-14 09:35:58,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:35:58,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-12-14 09:35:58,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-12-14 09:35:58,485 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) [2022-12-14 09:35:58,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-12-14 09:35:58,486 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-12-14 09:35:58,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:35:58,486 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-12-14 09:35:58,486 INFO L496 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) [2022-12-14 09:35:58,486 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-12-14 09:35:58,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 09:35:58,487 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:35:58,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:35:58,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 09:35:58,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:35:58,689 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:35:58,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:35:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-12-14 09:35:58,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 09:35:58,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160690428] [2022-12-14 09:35:58,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:35:58,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:35:58,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 09:35:58,697 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 09:35:58,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d8c7896-d2f7-4f8e-b071-8f8798a9afab/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process