./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --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 fe3c8b13f268d0f08d959b203c6650243d0aa01256dfd7d03d9b6e6990dd887b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:56:05,765 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:56:05,832 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 14:56:05,837 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:56:05,837 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:56:05,864 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:56:05,864 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:56:05,865 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:56:05,866 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:56:05,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:56:05,867 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:56:05,867 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:56:05,868 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:56:05,868 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:56:05,869 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:56:05,869 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:56:05,870 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:56:05,870 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:56:05,871 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:56:05,871 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:56:05,872 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:56:05,873 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:56:05,874 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:56:05,874 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:56:05,875 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:56:05,875 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:56:05,876 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:56:05,876 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:56:05,876 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:56:05,877 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:56:05,877 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:56:05,878 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:56:05,878 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:56:05,878 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:56:05,878 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:56:05,879 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:56:05,879 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:56:05,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:56:05,879 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:56:05,880 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:56:05,880 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:56:05,880 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:56:05,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:56:05,881 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:56:05,881 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:56:05,881 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:56:05,881 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:56:05,881 INFO L153 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_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe3c8b13f268d0f08d959b203c6650243d0aa01256dfd7d03d9b6e6990dd887b [2023-12-02 14:56:06,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:56:06,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:56:06,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:56:06,126 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:56:06,126 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:56:06,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i [2023-12-02 14:56:08,868 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:56:09,038 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:56:09,038 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i [2023-12-02 14:56:09,044 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/data/2011d967c/11f1dba8c443469d9c969ea74e0787a0/FLAGe0719345f [2023-12-02 14:56:09,055 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/data/2011d967c/11f1dba8c443469d9c969ea74e0787a0 [2023-12-02 14:56:09,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:56:09,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:56:09,059 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:56:09,059 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:56:09,064 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:56:09,065 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:56:09" (1/1) ... [2023-12-02 14:56:09,066 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d83815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:09, skipping insertion in model container [2023-12-02 14:56:09,066 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:56:09" (1/1) ... [2023-12-02 14:56:09,083 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:56:09,215 WARN L240 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_f2addb2b-6256-40da-a14e-71b500a2806a/sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i[873,886] [2023-12-02 14:56:09,224 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:56:09,232 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:56:09,243 WARN L240 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_f2addb2b-6256-40da-a14e-71b500a2806a/sv-benchmarks/c/loop-zilu/benchmark18_conjunctive.i[873,886] [2023-12-02 14:56:09,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:56:09,257 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:56:09,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:09 WrapperNode [2023-12-02 14:56:09,258 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:56:09,259 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:56:09,259 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:56:09,259 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:56:09,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:09" (1/1) ... [2023-12-02 14:56:09,270 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:09" (1/1) ... [2023-12-02 14:56:09,283 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2023-12-02 14:56:09,284 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:56:09,284 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:56:09,284 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:56:09,284 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:56:09,291 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:09" (1/1) ... [2023-12-02 14:56:09,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:09" (1/1) ... [2023-12-02 14:56:09,292 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:09" (1/1) ... [2023-12-02 14:56:09,292 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:09" (1/1) ... [2023-12-02 14:56:09,294 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:09" (1/1) ... [2023-12-02 14:56:09,296 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:09" (1/1) ... [2023-12-02 14:56:09,297 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:09" (1/1) ... [2023-12-02 14:56:09,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:09" (1/1) ... [2023-12-02 14:56:09,299 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:56:09,300 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:56:09,300 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:56:09,300 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:56:09,301 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:09" (1/1) ... [2023-12-02 14:56:09,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:56:09,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:56:09,327 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:56:09,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:56:09,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:56:09,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:56:09,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:56:09,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:56:09,414 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:56:09,417 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:56:09,505 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:56:09,528 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:56:09,528 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 14:56:09,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:56:09 BoogieIcfgContainer [2023-12-02 14:56:09,530 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:56:09,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:56:09,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:56:09,536 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:56:09,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:56:09" (1/3) ... [2023-12-02 14:56:09,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3472a7ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:56:09, skipping insertion in model container [2023-12-02 14:56:09,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:09" (2/3) ... [2023-12-02 14:56:09,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3472a7ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:56:09, skipping insertion in model container [2023-12-02 14:56:09,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:56:09" (3/3) ... [2023-12-02 14:56:09,539 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark18_conjunctive.i [2023-12-02 14:56:09,556 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:56:09,556 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 14:56:09,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:56:09,605 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=LoopHeads, 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;@43bacf37, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:56:09,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 14:56:09,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2023-12-02 14:56:09,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 14:56:09,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:56:09,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 14:56:09,614 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:56:09,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:56:09,618 INFO L85 PathProgramCache]: Analyzing trace with hash 59349214, now seen corresponding path program 1 times [2023-12-02 14:56:09,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:56:09,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482174849] [2023-12-02 14:56:09,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:56:09,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:56:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:56:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:56:09,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:56:09,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482174849] [2023-12-02 14:56:09,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482174849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:56:09,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:56:09,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:56:09,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838869251] [2023-12-02 14:56:09,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:56:09,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:56:09,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:56:09,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:56:09,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:56:09,842 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-12-02 14:56:09,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:56:09,869 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2023-12-02 14:56:09,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:56:09,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-12-02 14:56:09,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:56:09,879 INFO L225 Difference]: With dead ends: 16 [2023-12-02 14:56:09,879 INFO L226 Difference]: Without dead ends: 7 [2023-12-02 14:56:09,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:56:09,886 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:56:09,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:56:09,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-12-02 14:56:09,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-12-02 14:56:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2023-12-02 14:56:09,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-12-02 14:56:09,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2023-12-02 14:56:09,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:56:09,913 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-12-02 14:56:09,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-12-02 14:56:09,914 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2023-12-02 14:56:09,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 14:56:09,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:56:09,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 14:56:09,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:56:09,915 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:56:09,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:56:09,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1839242300, now seen corresponding path program 1 times [2023-12-02 14:56:09,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:56:09,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138246870] [2023-12-02 14:56:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:56:09,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:56:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:56:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:56:10,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:56:10,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138246870] [2023-12-02 14:56:10,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138246870] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:56:10,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334835444] [2023-12-02 14:56:10,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:56:10,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:56:10,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:56:10,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:56:10,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 14:56:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:56:10,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 14:56:10,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:56:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:56:10,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:56:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:56:10,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334835444] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:56:10,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [977590943] [2023-12-02 14:56:10,395 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-12-02 14:56:10,395 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:56:10,397 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:56:10,401 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:56:10,402 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:56:10,570 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:56:10,740 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '82#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~i~0#1|) (or (not (= |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~n~0#1|)) (not (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~k~0#1|))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 1 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0))' at error location [2023-12-02 14:56:10,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:56:10,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:56:10,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-12-02 14:56:10,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691611709] [2023-12-02 14:56:10,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:56:10,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 14:56:10,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:56:10,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 14:56:10,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-02 14:56:10,744 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2023-12-02 14:56:10,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:56:10,800 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2023-12-02 14:56:10,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 14:56:10,800 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 6 [2023-12-02 14:56:10,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:56:10,801 INFO L225 Difference]: With dead ends: 9 [2023-12-02 14:56:10,801 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 14:56:10,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-02 14:56:10,803 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 3 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:56:10,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:56:10,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 14:56:10,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 14:56:10,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-12-02 14:56:10,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 14:56:10,806 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2023-12-02 14:56:10,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:56:10,806 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 14:56:10,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2023-12-02 14:56:10,806 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 14:56:10,806 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 14:56:10,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 14:56:10,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 14:56:11,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:56:11,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 14:56:11,036 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 14:56:11,036 INFO L899 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2023-12-02 14:56:11,036 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2023-12-02 14:56:11,036 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 14:56:11,036 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 19 29) no Hoare annotation was computed. [2023-12-02 14:56:11,037 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2023-12-02 14:56:11,037 INFO L895 garLoopResultBuilder]: At program point L24-2(lines 24 26) the Hoare annotation is: (and (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~n~0#1|)) [2023-12-02 14:56:11,037 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-12-02 14:56:11,037 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2023-12-02 14:56:11,041 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-02 14:56:11,043 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 14:56:11,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:56:11 BoogieIcfgContainer [2023-12-02 14:56:11,054 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 14:56:11,055 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 14:56:11,055 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 14:56:11,055 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 14:56:11,056 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:56:09" (3/4) ... [2023-12-02 14:56:11,058 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 14:56:11,064 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-12-02 14:56:11,064 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-12-02 14:56:11,064 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 14:56:11,065 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 14:56:11,147 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 14:56:11,147 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 14:56:11,147 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 14:56:11,148 INFO L158 Benchmark]: Toolchain (without parser) took 2090.05ms. Allocated memory is still 180.4MB. Free memory was 141.2MB in the beginning and 81.4MB in the end (delta: 59.8MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. [2023-12-02 14:56:11,149 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 136.3MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:56:11,149 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.11ms. Allocated memory is still 180.4MB. Free memory was 141.2MB in the beginning and 130.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 14:56:11,150 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.16ms. Allocated memory is still 180.4MB. Free memory was 130.7MB in the beginning and 129.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 14:56:11,150 INFO L158 Benchmark]: Boogie Preprocessor took 14.87ms. Allocated memory is still 180.4MB. Free memory was 129.3MB in the beginning and 128.6MB in the end (delta: 698.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:56:11,151 INFO L158 Benchmark]: RCFGBuilder took 230.06ms. Allocated memory is still 180.4MB. Free memory was 128.6MB in the beginning and 118.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 14:56:11,151 INFO L158 Benchmark]: TraceAbstraction took 1521.39ms. Allocated memory is still 180.4MB. Free memory was 117.4MB in the beginning and 85.6MB in the end (delta: 31.8MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2023-12-02 14:56:11,151 INFO L158 Benchmark]: Witness Printer took 92.68ms. Allocated memory is still 180.4MB. Free memory was 85.6MB in the beginning and 81.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 14:56:11,153 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 136.3MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.11ms. Allocated memory is still 180.4MB. Free memory was 141.2MB in the beginning and 130.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.16ms. Allocated memory is still 180.4MB. Free memory was 130.7MB in the beginning and 129.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.87ms. Allocated memory is still 180.4MB. Free memory was 129.3MB in the beginning and 128.6MB in the end (delta: 698.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 230.06ms. Allocated memory is still 180.4MB. Free memory was 128.6MB in the beginning and 118.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1521.39ms. Allocated memory is still 180.4MB. Free memory was 117.4MB in the beginning and 85.6MB in the end (delta: 31.8MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. * Witness Printer took 92.68ms. Allocated memory is still 180.4MB. Free memory was 85.6MB in the beginning and 81.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: 16]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 7 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 3 NumberOfFragments, 7 HoareAnnotationTreeSize, 1 FomulaSimplifications, 5 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 87 SizeOfPredicates, 4 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((i == k) && (k <= n)) RESULT: Ultimate proved your program to be correct! [2023-12-02 14:56:11,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2addb2b-6256-40da-a14e-71b500a2806a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE