./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label59.c --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_db145fb8-1e84-4c92-a654-52864d9d0bdb/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/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_db145fb8-1e84-4c92-a654-52864d9d0bdb/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label59.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/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_db145fb8-1e84-4c92-a654-52864d9d0bdb/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 86b33a3328c808cec34f54492a07e8640c009630cc5a59a5959b66da0514436c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:11:51,836 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:11:51,910 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:11:51,914 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:11:51,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:11:51,941 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:11:51,941 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:11:51,942 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:11:51,942 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:11:51,943 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:11:51,943 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:11:51,944 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:11:51,944 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:11:51,945 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:11:51,945 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:11:51,946 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:11:51,946 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:11:51,947 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:11:51,947 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:11:51,948 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:11:51,948 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:11:51,949 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:11:51,950 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:11:51,950 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:11:51,951 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:11:51,951 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:11:51,951 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:11:51,952 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:11:51,952 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:11:51,953 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:11:51,953 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:11:51,953 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:11:51,954 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:11:51,954 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:11:51,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:11:51,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:11:51,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:11:51,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:11:51,955 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:11:51,955 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:11:51,956 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:11:51,958 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:11:51,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:11:51,958 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:11:51,958 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:11:51,958 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:11:51,958 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:11:51,959 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_db145fb8-1e84-4c92-a654-52864d9d0bdb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86b33a3328c808cec34f54492a07e8640c009630cc5a59a5959b66da0514436c [2023-12-02 15:11:52,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:11:52,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:11:52,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:11:52,201 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:11:52,201 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:11:52,202 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/eca-rers2012/Problem14_label59.c [2023-12-02 15:11:54,936 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:11:55,180 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:11:55,180 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/sv-benchmarks/c/eca-rers2012/Problem14_label59.c [2023-12-02 15:11:55,195 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/bin/utaipan-verify-nQ1chXbOIh/data/3344ec960/414ecba5d2e24c678452aedb6b92e072/FLAGe3d6a7934 [2023-12-02 15:11:55,210 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/bin/utaipan-verify-nQ1chXbOIh/data/3344ec960/414ecba5d2e24c678452aedb6b92e072 [2023-12-02 15:11:55,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:11:55,214 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:11:55,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:11:55,216 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:11:55,221 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:11:55,221 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:11:55" (1/1) ... [2023-12-02 15:11:55,222 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28e84a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:55, skipping insertion in model container [2023-12-02 15:11:55,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:11:55" (1/1) ... [2023-12-02 15:11:55,281 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:11:55,479 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_db145fb8-1e84-4c92-a654-52864d9d0bdb/sv-benchmarks/c/eca-rers2012/Problem14_label59.c[4234,4247] [2023-12-02 15:11:55,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:11:55,644 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:11:55,667 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_db145fb8-1e84-4c92-a654-52864d9d0bdb/sv-benchmarks/c/eca-rers2012/Problem14_label59.c[4234,4247] [2023-12-02 15:11:55,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:11:55,764 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:11:55,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:55 WrapperNode [2023-12-02 15:11:55,764 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:11:55,765 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:11:55,765 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:11:55,765 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:11:55,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:55" (1/1) ... [2023-12-02 15:11:55,793 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:55" (1/1) ... [2023-12-02 15:11:55,859 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 859 [2023-12-02 15:11:55,859 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:11:55,860 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:11:55,860 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:11:55,860 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:11:55,869 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:55" (1/1) ... [2023-12-02 15:11:55,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:55" (1/1) ... [2023-12-02 15:11:55,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:55" (1/1) ... [2023-12-02 15:11:55,877 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:55" (1/1) ... [2023-12-02 15:11:55,906 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:55" (1/1) ... [2023-12-02 15:11:55,916 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:55" (1/1) ... [2023-12-02 15:11:55,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:55" (1/1) ... [2023-12-02 15:11:55,929 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:55" (1/1) ... [2023-12-02 15:11:55,937 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:11:55,939 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:11:55,939 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:11:55,939 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:11:55,941 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:55" (1/1) ... [2023-12-02 15:11:55,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:11:55,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:11:55,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:11:55,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:11:56,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:11:56,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:11:56,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:11:56,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:11:56,082 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:11:56,084 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:11:57,228 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:12:00,971 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:12:00,971 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:12:00,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:12:00 BoogieIcfgContainer [2023-12-02 15:12:00,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:12:00,974 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:12:00,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:12:00,977 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:12:00,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:11:55" (1/3) ... [2023-12-02 15:12:00,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c39cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:12:00, skipping insertion in model container [2023-12-02 15:12:00,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:11:55" (2/3) ... [2023-12-02 15:12:00,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c39cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:12:00, skipping insertion in model container [2023-12-02 15:12:00,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:12:00" (3/3) ... [2023-12-02 15:12:00,979 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label59.c [2023-12-02 15:12:00,993 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:12:00,993 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:12:01,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:12:01,037 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;@3110bd7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:12:01,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:12:01,041 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 15:12:01,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 15:12:01,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:12:01,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 15:12:01,049 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:12:01,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:12:01,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1058182751, now seen corresponding path program 1 times [2023-12-02 15:12:01,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:12:01,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057372871] [2023-12-02 15:12:01,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:12:01,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:12:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:12:01,274 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 15:12:01,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:12:01,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057372871] [2023-12-02 15:12:01,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057372871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:12:01,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:12:01,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:12:01,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958229289] [2023-12-02 15:12:01,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:12:01,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:12:01,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:12:01,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:12:01,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:12:01,314 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), 2 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 15:12:01,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:12:01,440 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2023-12-02 15:12:01,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:12:01,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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 15:12:01,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:12:01,451 INFO L225 Difference]: With dead ends: 23 [2023-12-02 15:12:01,451 INFO L226 Difference]: Without dead ends: 11 [2023-12-02 15:12:01,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:12:01,458 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:12:01,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:12:01,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-02 15:12:01,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2023-12-02 15:12:01,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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 15:12:01,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2023-12-02 15:12:01,490 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2023-12-02 15:12:01,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:12:01,491 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2023-12-02 15:12:01,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 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 15:12:01,491 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2023-12-02 15:12:01,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 15:12:01,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:12:01,492 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-12-02 15:12:01,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:12:01,493 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:12:01,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:12:01,494 INFO L85 PathProgramCache]: Analyzing trace with hash -138263407, now seen corresponding path program 1 times [2023-12-02 15:12:01,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:12:01,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714915533] [2023-12-02 15:12:01,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:12:01,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:12:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:12:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:12:20,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:12:20,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714915533] [2023-12-02 15:12:20,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714915533] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:12:20,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378314777] [2023-12-02 15:12:20,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:12:20,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:12:20,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:12:20,466 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:12:20,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:12:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:12:20,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 15:12:20,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:12:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:12:23,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:12:32,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:12:32,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378314777] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:12:32,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [560042836] [2023-12-02 15:12:32,649 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-12-02 15:12:32,649 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:12:32,652 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:12:32,656 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:12:32,656 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:12:33,955 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 36 [2023-12-02 15:12:35,031 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 27480 conjunctions. This might take some time... [2023-12-02 15:12:37,680 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 588 conjunctions. [2023-12-02 15:12:37,701 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 36 [2023-12-02 15:12:38,603 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 27480 conjunctions. This might take some time... [2023-12-02 15:12:41,378 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 588 conjunctions. [2023-12-02 15:16:59,735 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 35 [2023-12-02 15:17:00,098 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 13800 conjunctions. This might take some time... [2023-12-02 15:17:00,686 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 294 conjunctions. [2023-12-02 15:17:00,690 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 35 [2023-12-02 15:17:01,022 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 13800 conjunctions. This might take some time... [2023-12-02 15:17:01,629 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 294 conjunctions. [2023-12-02 15:22:43,116 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 35 [2023-12-02 15:22:43,473 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 13800 conjunctions. This might take some time... [2023-12-02 15:22:44,054 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 294 conjunctions. [2023-12-02 15:22:44,058 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 35 [2023-12-02 15:22:44,392 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 13800 conjunctions. This might take some time... [2023-12-02 15:22:45,007 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 294 conjunctions. [2023-12-02 15:22:45,245 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 35 [2023-12-02 15:22:45,582 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 13800 conjunctions. This might take some time... [2023-12-02 15:22:46,195 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 294 conjunctions. [2023-12-02 15:22:46,799 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 35 [2023-12-02 15:22:47,139 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 13800 conjunctions. This might take some time... [2023-12-02 15:22:47,764 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 294 conjunctions. [2023-12-02 15:22:47,884 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:22:48,783 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '110#(or (and (= |ULTIMATE.start_main_~input~0#1| 1) (<= (+ ~a12~0 43) 0) (= ~a24~0 1) (= |ULTIMATE.start_calculate_output_~input#1| 1) (= |ULTIMATE.start_calculate_output_#in~input#1| 1) (= ~a21~0 6) (= ~a15~0 8)) (and (<= (+ ~a12~0 43) 0) (= ~a24~0 1) (= 3 |ULTIMATE.start_calculate_output_#in~input#1|) (= ~a21~0 6) (= 3 |ULTIMATE.start_main_~input~0#1|) (= |ULTIMATE.start_calculate_output_~input#1| 3) (= ~a15~0 8)) (and (= 5 |ULTIMATE.start_main_~input~0#1|) (<= (+ ~a12~0 43) 0) (= ~a24~0 1) (= 5 |ULTIMATE.start_calculate_output_#in~input#1|) (= ~a21~0 6) (= |ULTIMATE.start_calculate_output_~input#1| 5) (= ~a15~0 8)) (and (= |ULTIMATE.start_calculate_output_~input#1| 6) (<= (+ ~a12~0 43) 0) (= ~a24~0 1) (= ~a21~0 6) (= |ULTIMATE.start_calculate_output_#in~input#1| 6) (= 6 |ULTIMATE.start_main_~input~0#1|) (= ~a15~0 8)) (and (<= (+ ~a12~0 43) 0) (= |ULTIMATE.start_calculate_output_~input#1| 2) (= ~a24~0 1) (= 2 |ULTIMATE.start_calculate_output_#in~input#1|) (= ~a21~0 6) (= 2 |ULTIMATE.start_main_~input~0#1|) (= ~a15~0 8)) (and (= |ULTIMATE.start_main_~input~0#1| 4) (<= (+ ~a12~0 43) 0) (= ~a24~0 1) (= ~a21~0 6) (= |ULTIMATE.start_calculate_output_~input#1| 4) (= |ULTIMATE.start_calculate_output_#in~input#1| 4) (= ~a15~0 8)))' at error location [2023-12-02 15:22:48,783 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:22:48,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:22:48,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-12-02 15:22:48,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224317941] [2023-12-02 15:22:48,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:22:48,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 15:22:48,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:22:48,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 15:22:48,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-02 15:22:48,786 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 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 15:22:49,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:22:49,036 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2023-12-02 15:22:49,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:22:49,037 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 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 [2023-12-02 15:22:49,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:22:49,038 INFO L225 Difference]: With dead ends: 25 [2023-12-02 15:22:49,038 INFO L226 Difference]: Without dead ends: 23 [2023-12-02 15:22:49,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-02 15:22:49,039 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:22:49,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:22:49,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-02 15:22:49,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2023-12-02 15:22:49,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 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 15:22:49,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2023-12-02 15:22:49,043 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 9 [2023-12-02 15:22:49,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:22:49,043 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2023-12-02 15:22:49,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 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 15:22:49,044 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2023-12-02 15:22:49,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 15:22:49,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:22:49,044 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1] [2023-12-02 15:22:49,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:22:49,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:22:49,245 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:22:49,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:22:49,246 INFO L85 PathProgramCache]: Analyzing trace with hash 945608999, now seen corresponding path program 2 times [2023-12-02 15:22:49,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:22:49,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804464708] [2023-12-02 15:22:49,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:49,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:22:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 15:23:23,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:23:23,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804464708] [2023-12-02 15:23:23,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804464708] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:23:23,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:23:23,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:23:23,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363232567] [2023-12-02 15:23:23,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:23:23,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:23:23,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:23:23,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:23:23,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:23:23,473 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 15:23:23,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:23:23,509 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2023-12-02 15:23:23,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:23:23,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) Word has length 21 [2023-12-02 15:23:23,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:23:23,511 INFO L225 Difference]: With dead ends: 22 [2023-12-02 15:23:23,512 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 15:23:23,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 15:23:23,513 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:23:23,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:23:23,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 15:23:23,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 15:23:23,515 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 15:23:23,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 15:23:23,515 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2023-12-02 15:23:23,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:23:23,516 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 15:23:23,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 15:23:23,516 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 15:23:23,516 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 15:23:23,519 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 15:23:23,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 15:23:23,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 15:23:23,535 INFO L899 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2023-12-02 15:23:23,535 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 15:23:23,535 INFO L899 garLoopResultBuilder]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2023-12-02 15:23:23,535 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 134) no Hoare annotation was computed. [2023-12-02 15:23:23,535 INFO L899 garLoopResultBuilder]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2023-12-02 15:23:23,535 INFO L899 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2023-12-02 15:23:23,535 INFO L899 garLoopResultBuilder]: For program point L884(lines 884 900) no Hoare annotation was computed. [2023-12-02 15:23:23,536 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 15:23:23,536 INFO L895 garLoopResultBuilder]: At program point L890-2(lines 890 899) the Hoare annotation is: (or (not (= ~a24~0 1)) (not (= ~a15~0 8)) (not (= ~a21~0 6)) (< 0 (+ ~a12~0 43))) [2023-12-02 15:23:23,539 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-12-02 15:23:23,541 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:23:23,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:23:23 BoogieIcfgContainer [2023-12-02 15:23:23,552 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:23:23,552 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:23:23,552 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:23:23,553 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:23:23,553 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:12:00" (3/4) ... [2023-12-02 15:23:23,555 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 15:23:23,578 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 233 nodes and edges [2023-12-02 15:23:23,580 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-12-02 15:23:23,582 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-12-02 15:23:23,584 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 15:23:23,741 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 15:23:23,741 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 15:23:23,741 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:23:23,742 INFO L158 Benchmark]: Toolchain (without parser) took 688527.97ms. Allocated memory was 159.4MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 120.2MB in the beginning and 1.1GB in the end (delta: -978.0MB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2023-12-02 15:23:23,742 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:23:23,743 INFO L158 Benchmark]: CACSL2BoogieTranslator took 548.92ms. Allocated memory is still 159.4MB. Free memory was 119.7MB in the beginning and 107.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 15:23:23,743 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.56ms. Allocated memory is still 159.4MB. Free memory was 107.2MB in the beginning and 97.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 15:23:23,743 INFO L158 Benchmark]: Boogie Preprocessor took 77.89ms. Allocated memory is still 159.4MB. Free memory was 97.3MB in the beginning and 91.5MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 15:23:23,744 INFO L158 Benchmark]: RCFGBuilder took 5033.71ms. Allocated memory was 159.4MB in the beginning and 704.6MB in the end (delta: 545.3MB). Free memory was 91.5MB in the beginning and 590.6MB in the end (delta: -499.2MB). Peak memory consumption was 219.7MB. Max. memory is 16.1GB. [2023-12-02 15:23:23,744 INFO L158 Benchmark]: TraceAbstraction took 682577.67ms. Allocated memory was 704.6MB in the beginning and 2.8GB in the end (delta: 2.1GB). Free memory was 590.6MB in the beginning and 1.1GB in the end (delta: -524.3MB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2023-12-02 15:23:23,744 INFO L158 Benchmark]: Witness Printer took 188.97ms. Allocated memory is still 2.8GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 15:23:23,747 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 548.92ms. Allocated memory is still 159.4MB. Free memory was 119.7MB in the beginning and 107.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.56ms. Allocated memory is still 159.4MB. Free memory was 107.2MB in the beginning and 97.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.89ms. Allocated memory is still 159.4MB. Free memory was 97.3MB in the beginning and 91.5MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 5033.71ms. Allocated memory was 159.4MB in the beginning and 704.6MB in the end (delta: 545.3MB). Free memory was 91.5MB in the beginning and 590.6MB in the end (delta: -499.2MB). Peak memory consumption was 219.7MB. Max. memory is 16.1GB. * TraceAbstraction took 682577.67ms. Allocated memory was 704.6MB in the beginning and 2.8GB in the end (delta: 2.1GB). Free memory was 590.6MB in the beginning and 1.1GB in the end (delta: -524.3MB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. * Witness Printer took 188.97ms. Allocated memory is still 2.8GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. 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: 134]: 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: 682.5s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 8 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, InterpolantAutomatonStates: 12, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 6 NumberOfFragments, 18 HoareAnnotationTreeSize, 1 FomulaSimplifications, 164 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 64.7s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 437 SizeOfPredicates, 5 NumberOfNonLiveVariables, 165 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 36/45 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: 890]: Loop Invariant Derived loop invariant: (((!((a24 == 1)) || !((a15 == 8))) || !((a21 == 6))) || (0 < (a12 + 43))) RESULT: Ultimate proved your program to be correct! [2023-12-02 15:23:23,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db145fb8-1e84-4c92-a654-52864d9d0bdb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE