./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label00.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje --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 2bca315e83f3e404b0e19c30f2a2a6ccd3138047241e2a3074cd921904dce242 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:09:05,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:09:05,879 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:09:05,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:09:05,888 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:09:05,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:09:05,929 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:09:05,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:09:05,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:09:05,931 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:09:05,933 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:09:05,933 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:09:05,933 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:09:05,934 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:09:05,934 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:09:05,934 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:09:05,938 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:09:05,939 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:09:05,939 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:09:05,939 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:09:05,940 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:09:05,941 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:09:05,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:09:05,945 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:09:05,945 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:09:05,946 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:09:05,946 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:09:05,946 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:09:05,946 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:09:05,947 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:09:05,947 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:09:05,947 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:09:05,948 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:09:05,948 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:09:05,948 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:09:05,949 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:09:05,951 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:09:05,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:09:05,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:09:05,952 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:09:05,953 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:09:05,953 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:09:05,954 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:09:05,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:09:05,955 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:09:05,955 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:09:05,955 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:09:05,956 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_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bca315e83f3e404b0e19c30f2a2a6ccd3138047241e2a3074cd921904dce242 [2024-11-09 05:09:06,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:09:06,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:09:06,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:09:06,221 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:09:06,221 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:09:06,222 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/eca-rers2012/Problem02_label00.c Unable to find full path for "g++" [2024-11-09 05:09:08,194 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:09:08,479 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:09:08,482 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/sv-benchmarks/c/eca-rers2012/Problem02_label00.c [2024-11-09 05:09:08,501 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/data/5e9b62853/8d2011a7cdaa40a5b9847b9348169c81/FLAG434bed980 [2024-11-09 05:09:08,516 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/data/5e9b62853/8d2011a7cdaa40a5b9847b9348169c81 [2024-11-09 05:09:08,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:09:08,519 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:09:08,520 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:09:08,520 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:09:08,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:09:08,526 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:09:08" (1/1) ... [2024-11-09 05:09:08,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ab5d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:08, skipping insertion in model container [2024-11-09 05:09:08,527 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:09:08" (1/1) ... [2024-11-09 05:09:08,577 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:09:08,949 WARN L250 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_5fdaee3b-6d2a-45d5-9b67-020e51db056f/sv-benchmarks/c/eca-rers2012/Problem02_label00.c[18487,18500] [2024-11-09 05:09:08,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:09:09,001 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:09:09,113 WARN L250 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_5fdaee3b-6d2a-45d5-9b67-020e51db056f/sv-benchmarks/c/eca-rers2012/Problem02_label00.c[18487,18500] [2024-11-09 05:09:09,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:09:09,157 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:09:09,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09 WrapperNode [2024-11-09 05:09:09,158 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:09:09,159 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:09:09,160 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:09:09,160 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:09:09,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,256 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2024-11-09 05:09:09,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:09:09,263 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:09:09,263 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:09:09,264 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:09:09,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,285 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,286 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,317 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,330 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,333 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,340 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,356 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:09:09,357 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:09:09,357 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:09:09,357 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:09:09,358 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (1/1) ... [2024-11-09 05:09:09,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:09:09,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:09:09,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:09:09,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:09:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:09:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:09:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:09:09,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:09:09,579 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:09:09,582 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:09:10,842 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2024-11-09 05:09:10,842 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:09:11,158 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:09:11,159 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 05:09:11,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:09:11 BoogieIcfgContainer [2024-11-09 05:09:11,160 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:09:11,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:09:11,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:09:11,167 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:09:11,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:09:08" (1/3) ... [2024-11-09 05:09:11,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe40534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:09:11, skipping insertion in model container [2024-11-09 05:09:11,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:09" (2/3) ... [2024-11-09 05:09:11,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe40534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:09:11, skipping insertion in model container [2024-11-09 05:09:11,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:09:11" (3/3) ... [2024-11-09 05:09:11,173 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label00.c [2024-11-09 05:09:11,195 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:09:11,196 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:09:11,274 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:09:11,282 INFO L333 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, 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;@9d43fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:09:11,283 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:09:11,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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) [2024-11-09 05:09:11,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-09 05:09:11,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:11,299 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:11,300 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:11,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:11,307 INFO L85 PathProgramCache]: Analyzing trace with hash 545131766, now seen corresponding path program 1 times [2024-11-09 05:09:11,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:11,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322079120] [2024-11-09 05:09:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:11,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:09:12,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:12,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322079120] [2024-11-09 05:09:12,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322079120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:12,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:09:12,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:09:12,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788362192] [2024-11-09 05:09:12,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:12,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:09:12,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:12,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:09:12,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:09:12,067 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2024-11-09 05:09:12,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:12,652 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2024-11-09 05:09:12,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:09:12,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 80 [2024-11-09 05:09:12,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:12,666 INFO L225 Difference]: With dead ends: 251 [2024-11-09 05:09:12,667 INFO L226 Difference]: Without dead ends: 163 [2024-11-09 05:09:12,670 INFO L431 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 [2024-11-09 05:09:12,673 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:12,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 29 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:09:12,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-09 05:09:12,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2024-11-09 05:09:12,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.808641975308642) internal successors, (293), 162 states have internal predecessors, (293), 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) [2024-11-09 05:09:12,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 293 transitions. [2024-11-09 05:09:12,733 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 293 transitions. Word has length 80 [2024-11-09 05:09:12,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:12,734 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 293 transitions. [2024-11-09 05:09:12,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2024-11-09 05:09:12,735 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 293 transitions. [2024-11-09 05:09:12,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-09 05:09:12,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:12,739 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:12,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:09:12,740 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:12,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:12,740 INFO L85 PathProgramCache]: Analyzing trace with hash 652271733, now seen corresponding path program 1 times [2024-11-09 05:09:12,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:12,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810549472] [2024-11-09 05:09:12,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:12,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:12,960 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:09:12,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:12,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810549472] [2024-11-09 05:09:12,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810549472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:12,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:09:12,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:09:12,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618494767] [2024-11-09 05:09:12,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:12,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:09:12,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:12,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:09:12,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:09:12,966 INFO L87 Difference]: Start difference. First operand 163 states and 293 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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) [2024-11-09 05:09:13,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:13,440 INFO L93 Difference]: Finished difference Result 485 states and 876 transitions. [2024-11-09 05:09:13,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:09:13,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 88 [2024-11-09 05:09:13,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:13,443 INFO L225 Difference]: With dead ends: 485 [2024-11-09 05:09:13,444 INFO L226 Difference]: Without dead ends: 323 [2024-11-09 05:09:13,445 INFO L431 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 [2024-11-09 05:09:13,446 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 75 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:13,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 62 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:09:13,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-09 05:09:13,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2024-11-09 05:09:13,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.5031055900621118) internal successors, (484), 322 states have internal predecessors, (484), 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) [2024-11-09 05:09:13,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 484 transitions. [2024-11-09 05:09:13,470 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 484 transitions. Word has length 88 [2024-11-09 05:09:13,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:13,470 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 484 transitions. [2024-11-09 05:09:13,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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) [2024-11-09 05:09:13,471 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 484 transitions. [2024-11-09 05:09:13,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-09 05:09:13,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:13,474 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:13,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:09:13,475 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:13,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:13,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1631463292, now seen corresponding path program 1 times [2024-11-09 05:09:13,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:13,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313099303] [2024-11-09 05:09:13,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:13,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:13,631 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:09:13,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:13,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313099303] [2024-11-09 05:09:13,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313099303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:13,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:09:13,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:09:13,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290343350] [2024-11-09 05:09:13,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:13,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:09:13,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:13,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:09:13,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:09:13,637 INFO L87 Difference]: Start difference. First operand 323 states and 484 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2024-11-09 05:09:14,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:14,069 INFO L93 Difference]: Finished difference Result 965 states and 1449 transitions. [2024-11-09 05:09:14,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:09:14,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 89 [2024-11-09 05:09:14,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:14,074 INFO L225 Difference]: With dead ends: 965 [2024-11-09 05:09:14,075 INFO L226 Difference]: Without dead ends: 643 [2024-11-09 05:09:14,077 INFO L431 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 [2024-11-09 05:09:14,081 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 13 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:14,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 167 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:09:14,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2024-11-09 05:09:14,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 563. [2024-11-09 05:09:14,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 562 states have (on average 1.4572953736654803) internal successors, (819), 562 states have internal predecessors, (819), 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) [2024-11-09 05:09:14,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 819 transitions. [2024-11-09 05:09:14,125 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 819 transitions. Word has length 89 [2024-11-09 05:09:14,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:14,127 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 819 transitions. [2024-11-09 05:09:14,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2024-11-09 05:09:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 819 transitions. [2024-11-09 05:09:14,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-09 05:09:14,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:14,134 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:14,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:09:14,134 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:14,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:14,135 INFO L85 PathProgramCache]: Analyzing trace with hash -2057400230, now seen corresponding path program 1 times [2024-11-09 05:09:14,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:14,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545098487] [2024-11-09 05:09:14,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:14,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:14,281 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:09:14,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:14,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545098487] [2024-11-09 05:09:14,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545098487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:14,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:09:14,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:09:14,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607396399] [2024-11-09 05:09:14,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:14,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:09:14,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:14,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:09:14,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:09:14,285 INFO L87 Difference]: Start difference. First operand 563 states and 819 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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) [2024-11-09 05:09:14,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:14,712 INFO L93 Difference]: Finished difference Result 1605 states and 2358 transitions. [2024-11-09 05:09:14,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:09:14,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 90 [2024-11-09 05:09:14,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:14,716 INFO L225 Difference]: With dead ends: 1605 [2024-11-09 05:09:14,717 INFO L226 Difference]: Without dead ends: 1043 [2024-11-09 05:09:14,718 INFO L431 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 [2024-11-09 05:09:14,719 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 111 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:14,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 28 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:09:14,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2024-11-09 05:09:14,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2024-11-09 05:09:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1042 states have (on average 1.3915547024952015) internal successors, (1450), 1042 states have internal predecessors, (1450), 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) [2024-11-09 05:09:14,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1450 transitions. [2024-11-09 05:09:14,747 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1450 transitions. Word has length 90 [2024-11-09 05:09:14,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:14,747 INFO L471 AbstractCegarLoop]: Abstraction has 1043 states and 1450 transitions. [2024-11-09 05:09:14,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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) [2024-11-09 05:09:14,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1450 transitions. [2024-11-09 05:09:14,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-09 05:09:14,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:14,750 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:14,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:09:14,751 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:14,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:14,751 INFO L85 PathProgramCache]: Analyzing trace with hash -111787399, now seen corresponding path program 1 times [2024-11-09 05:09:14,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:14,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791886049] [2024-11-09 05:09:14,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:14,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:14,925 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:09:14,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:14,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791886049] [2024-11-09 05:09:14,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791886049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:14,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:09:14,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:09:14,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171081759] [2024-11-09 05:09:14,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:14,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:09:14,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:14,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:09:14,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:09:14,929 INFO L87 Difference]: Start difference. First operand 1043 states and 1450 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-11-09 05:09:15,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:15,379 INFO L93 Difference]: Finished difference Result 2485 states and 3457 transitions. [2024-11-09 05:09:15,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:09:15,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 93 [2024-11-09 05:09:15,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:15,385 INFO L225 Difference]: With dead ends: 2485 [2024-11-09 05:09:15,385 INFO L226 Difference]: Without dead ends: 1363 [2024-11-09 05:09:15,387 INFO L431 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 [2024-11-09 05:09:15,388 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 28 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:15,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 41 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:09:15,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2024-11-09 05:09:15,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1363. [2024-11-09 05:09:15,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1362 states have (on average 1.328193832599119) internal successors, (1809), 1362 states have internal predecessors, (1809), 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) [2024-11-09 05:09:15,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1809 transitions. [2024-11-09 05:09:15,418 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1809 transitions. Word has length 93 [2024-11-09 05:09:15,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:15,419 INFO L471 AbstractCegarLoop]: Abstraction has 1363 states and 1809 transitions. [2024-11-09 05:09:15,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-11-09 05:09:15,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1809 transitions. [2024-11-09 05:09:15,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-09 05:09:15,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:15,422 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:15,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:09:15,422 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:15,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:15,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1555709443, now seen corresponding path program 1 times [2024-11-09 05:09:15,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:15,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395458039] [2024-11-09 05:09:15,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:15,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:15,859 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:09:15,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:15,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395458039] [2024-11-09 05:09:15,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395458039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:09:15,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018769795] [2024-11-09 05:09:15,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:15,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:15,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:09:15,864 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:09:15,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:09:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:15,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:09:16,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:09:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:09:16,187 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:09:16,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018769795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:16,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:09:16,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 05:09:16,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194094422] [2024-11-09 05:09:16,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:16,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:09:16,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:16,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:09:16,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:09:16,189 INFO L87 Difference]: Start difference. First operand 1363 states and 1809 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-11-09 05:09:16,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:16,614 INFO L93 Difference]: Finished difference Result 3045 states and 4080 transitions. [2024-11-09 05:09:16,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:09:16,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 107 [2024-11-09 05:09:16,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:16,620 INFO L225 Difference]: With dead ends: 3045 [2024-11-09 05:09:16,621 INFO L226 Difference]: Without dead ends: 1683 [2024-11-09 05:09:16,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:09:16,624 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:16,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 130 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:09:16,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2024-11-09 05:09:16,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1363. [2024-11-09 05:09:16,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1362 states have (on average 1.2834067547723935) internal successors, (1748), 1362 states have internal predecessors, (1748), 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) [2024-11-09 05:09:16,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1748 transitions. [2024-11-09 05:09:16,657 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1748 transitions. Word has length 107 [2024-11-09 05:09:16,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:16,657 INFO L471 AbstractCegarLoop]: Abstraction has 1363 states and 1748 transitions. [2024-11-09 05:09:16,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-11-09 05:09:16,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1748 transitions. [2024-11-09 05:09:16,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-09 05:09:16,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:16,661 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:16,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:09:16,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:16,862 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:16,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:16,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1978317830, now seen corresponding path program 1 times [2024-11-09 05:09:16,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:16,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051547037] [2024-11-09 05:09:16,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:16,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-09 05:09:17,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:17,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051547037] [2024-11-09 05:09:17,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051547037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:09:17,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925288987] [2024-11-09 05:09:17,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:17,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:17,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:09:17,183 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:09:17,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:09:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:17,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:09:17,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:09:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 05:09:17,370 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:09:17,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925288987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:17,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:09:17,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 05:09:17,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825783213] [2024-11-09 05:09:17,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:17,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:09:17,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:17,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:09:17,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:09:17,372 INFO L87 Difference]: Start difference. First operand 1363 states and 1748 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 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) [2024-11-09 05:09:17,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:17,608 INFO L93 Difference]: Finished difference Result 2645 states and 3397 transitions. [2024-11-09 05:09:17,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:09:17,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 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 114 [2024-11-09 05:09:17,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:17,614 INFO L225 Difference]: With dead ends: 2645 [2024-11-09 05:09:17,614 INFO L226 Difference]: Without dead ends: 1203 [2024-11-09 05:09:17,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:09:17,617 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 105 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:17,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 4 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:09:17,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2024-11-09 05:09:17,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2024-11-09 05:09:17,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.2437603993344426) internal successors, (1495), 1202 states have internal predecessors, (1495), 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) [2024-11-09 05:09:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1495 transitions. [2024-11-09 05:09:17,653 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1495 transitions. Word has length 114 [2024-11-09 05:09:17,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:17,654 INFO L471 AbstractCegarLoop]: Abstraction has 1203 states and 1495 transitions. [2024-11-09 05:09:17,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 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) [2024-11-09 05:09:17,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1495 transitions. [2024-11-09 05:09:17,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-09 05:09:17,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:17,657 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:17,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:09:17,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:17,862 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:17,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:17,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1071313346, now seen corresponding path program 1 times [2024-11-09 05:09:17,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:17,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887552958] [2024-11-09 05:09:17,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:17,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:18,398 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 65 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:09:18,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:18,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887552958] [2024-11-09 05:09:18,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887552958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:09:18,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65624293] [2024-11-09 05:09:18,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:18,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:18,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:09:18,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:09:18,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:09:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:18,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:09:18,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:09:18,761 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-09 05:09:18,761 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:09:18,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65624293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:18,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:09:18,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-09 05:09:18,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506722809] [2024-11-09 05:09:18,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:18,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:09:18,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:18,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:09:18,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:09:18,764 INFO L87 Difference]: Start difference. First operand 1203 states and 1495 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2024-11-09 05:09:19,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:19,138 INFO L93 Difference]: Finished difference Result 1365 states and 1710 transitions. [2024-11-09 05:09:19,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:09:19,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 154 [2024-11-09 05:09:19,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:19,143 INFO L225 Difference]: With dead ends: 1365 [2024-11-09 05:09:19,143 INFO L226 Difference]: Without dead ends: 1363 [2024-11-09 05:09:19,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:09:19,145 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 31 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:19,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 25 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:09:19,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2024-11-09 05:09:19,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1203. [2024-11-09 05:09:19,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.242928452579035) internal successors, (1494), 1202 states have internal predecessors, (1494), 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) [2024-11-09 05:09:19,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1494 transitions. [2024-11-09 05:09:19,172 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1494 transitions. Word has length 154 [2024-11-09 05:09:19,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:19,172 INFO L471 AbstractCegarLoop]: Abstraction has 1203 states and 1494 transitions. [2024-11-09 05:09:19,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2024-11-09 05:09:19,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1494 transitions. [2024-11-09 05:09:19,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-09 05:09:19,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:19,176 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:19,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:09:19,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:19,381 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:19,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:19,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1354649089, now seen corresponding path program 1 times [2024-11-09 05:09:19,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:19,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395710289] [2024-11-09 05:09:19,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:19,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:19,549 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:09:19,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:19,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395710289] [2024-11-09 05:09:19,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395710289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:19,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:09:19,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:09:19,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973519512] [2024-11-09 05:09:19,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:19,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:09:19,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:19,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:09:19,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:09:19,552 INFO L87 Difference]: Start difference. First operand 1203 states and 1494 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2024-11-09 05:09:19,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:19,917 INFO L93 Difference]: Finished difference Result 2325 states and 2899 transitions. [2024-11-09 05:09:19,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:09:19,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 171 [2024-11-09 05:09:19,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:19,921 INFO L225 Difference]: With dead ends: 2325 [2024-11-09 05:09:19,922 INFO L226 Difference]: Without dead ends: 1043 [2024-11-09 05:09:19,923 INFO L431 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 [2024-11-09 05:09:19,924 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 19 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:19,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 132 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:09:19,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2024-11-09 05:09:19,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2024-11-09 05:09:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1042 states have (on average 1.2082533589251438) internal successors, (1259), 1042 states have internal predecessors, (1259), 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) [2024-11-09 05:09:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1259 transitions. [2024-11-09 05:09:19,945 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1259 transitions. Word has length 171 [2024-11-09 05:09:19,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:19,946 INFO L471 AbstractCegarLoop]: Abstraction has 1043 states and 1259 transitions. [2024-11-09 05:09:19,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2024-11-09 05:09:19,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1259 transitions. [2024-11-09 05:09:19,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-09 05:09:19,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:19,949 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:19,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 05:09:19,950 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:19,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:19,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1005151038, now seen corresponding path program 1 times [2024-11-09 05:09:19,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:19,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737176264] [2024-11-09 05:09:19,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:19,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-09 05:09:20,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:20,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737176264] [2024-11-09 05:09:20,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737176264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:20,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:09:20,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:09:20,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789096011] [2024-11-09 05:09:20,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:20,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:09:20,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:20,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:09:20,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:09:20,133 INFO L87 Difference]: Start difference. First operand 1043 states and 1259 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2024-11-09 05:09:20,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:20,446 INFO L93 Difference]: Finished difference Result 2245 states and 2743 transitions. [2024-11-09 05:09:20,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:09:20,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 185 [2024-11-09 05:09:20,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:20,451 INFO L225 Difference]: With dead ends: 2245 [2024-11-09 05:09:20,451 INFO L226 Difference]: Without dead ends: 1283 [2024-11-09 05:09:20,452 INFO L431 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 [2024-11-09 05:09:20,453 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 50 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:20,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 127 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:09:20,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2024-11-09 05:09:20,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1283. [2024-11-09 05:09:20,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1282 states have (on average 1.1801872074882995) internal successors, (1513), 1282 states have internal predecessors, (1513), 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) [2024-11-09 05:09:20,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1513 transitions. [2024-11-09 05:09:20,478 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1513 transitions. Word has length 185 [2024-11-09 05:09:20,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:20,479 INFO L471 AbstractCegarLoop]: Abstraction has 1283 states and 1513 transitions. [2024-11-09 05:09:20,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2024-11-09 05:09:20,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1513 transitions. [2024-11-09 05:09:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-09 05:09:20,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:20,482 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:20,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 05:09:20,483 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:20,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:20,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1805680794, now seen corresponding path program 1 times [2024-11-09 05:09:20,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:20,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749858543] [2024-11-09 05:09:20,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:20,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:20,622 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-09 05:09:20,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:20,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749858543] [2024-11-09 05:09:20,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749858543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:20,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:09:20,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:09:20,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717561543] [2024-11-09 05:09:20,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:20,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:09:20,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:20,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:09:20,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:09:20,624 INFO L87 Difference]: Start difference. First operand 1283 states and 1513 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-09 05:09:20,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:20,928 INFO L93 Difference]: Finished difference Result 2245 states and 2668 transitions. [2024-11-09 05:09:20,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:09:20,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 188 [2024-11-09 05:09:20,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:20,932 INFO L225 Difference]: With dead ends: 2245 [2024-11-09 05:09:20,932 INFO L226 Difference]: Without dead ends: 1123 [2024-11-09 05:09:20,934 INFO L431 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 [2024-11-09 05:09:20,934 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 75 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:20,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 11 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:09:20,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2024-11-09 05:09:20,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2024-11-09 05:09:20,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.1746880570409983) internal successors, (1318), 1122 states have internal predecessors, (1318), 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) [2024-11-09 05:09:20,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1318 transitions. [2024-11-09 05:09:20,956 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1318 transitions. Word has length 188 [2024-11-09 05:09:20,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:20,957 INFO L471 AbstractCegarLoop]: Abstraction has 1123 states and 1318 transitions. [2024-11-09 05:09:20,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-09 05:09:20,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1318 transitions. [2024-11-09 05:09:20,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-09 05:09:20,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:20,960 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:20,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 05:09:20,961 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:20,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:20,961 INFO L85 PathProgramCache]: Analyzing trace with hash -44840265, now seen corresponding path program 1 times [2024-11-09 05:09:20,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:20,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51069193] [2024-11-09 05:09:20,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:20,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:21,182 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 05:09:21,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:21,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51069193] [2024-11-09 05:09:21,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51069193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:21,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:09:21,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:09:21,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570956919] [2024-11-09 05:09:21,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:21,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:09:21,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:21,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:09:21,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:09:21,185 INFO L87 Difference]: Start difference. First operand 1123 states and 1318 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2024-11-09 05:09:21,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:21,514 INFO L93 Difference]: Finished difference Result 2483 states and 2935 transitions. [2024-11-09 05:09:21,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:09:21,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 189 [2024-11-09 05:09:21,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:21,515 INFO L225 Difference]: With dead ends: 2483 [2024-11-09 05:09:21,516 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 05:09:21,517 INFO L431 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 [2024-11-09 05:09:21,518 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 57 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:21,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 110 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:09:21,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 05:09:21,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 05:09:21,519 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) [2024-11-09 05:09:21,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 05:09:21,520 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 189 [2024-11-09 05:09:21,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:21,520 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 05:09:21,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2024-11-09 05:09:21,520 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 05:09:21,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 05:09:21,523 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 05:09:21,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 05:09:21,527 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:21,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 05:09:21,831 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:09:21,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:09:21 BoogieIcfgContainer [2024-11-09 05:09:21,853 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:09:21,853 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:09:21,853 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:09:21,853 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:09:21,854 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:09:11" (3/4) ... [2024-11-09 05:09:21,856 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 05:09:21,880 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 129 nodes and edges [2024-11-09 05:09:21,883 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-09 05:09:21,884 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 05:09:21,885 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:09:22,056 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:09:22,057 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 05:09:22,057 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:09:22,058 INFO L158 Benchmark]: Toolchain (without parser) took 13538.75ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 101.6MB in the beginning and 151.0MB in the end (delta: -49.3MB). Peak memory consumption was 137.6MB. Max. memory is 16.1GB. [2024-11-09 05:09:22,058 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 142.6MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:09:22,058 INFO L158 Benchmark]: CACSL2BoogieTranslator took 638.64ms. Allocated memory is still 142.6MB. Free memory was 101.6MB in the beginning and 72.9MB in the end (delta: 28.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-09 05:09:22,059 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.19ms. Allocated memory is still 142.6MB. Free memory was 72.9MB in the beginning and 67.5MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 05:09:22,059 INFO L158 Benchmark]: Boogie Preprocessor took 93.00ms. Allocated memory is still 142.6MB. Free memory was 67.4MB in the beginning and 62.8MB in the end (delta: 4.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-09 05:09:22,059 INFO L158 Benchmark]: RCFGBuilder took 1803.05ms. Allocated memory was 142.6MB in the beginning and 188.7MB in the end (delta: 46.1MB). Free memory was 62.8MB in the beginning and 82.5MB in the end (delta: -19.7MB). Peak memory consumption was 32.4MB. Max. memory is 16.1GB. [2024-11-09 05:09:22,060 INFO L158 Benchmark]: TraceAbstraction took 10689.91ms. Allocated memory was 188.7MB in the beginning and 327.2MB in the end (delta: 138.4MB). Free memory was 82.5MB in the beginning and 163.6MB in the end (delta: -81.1MB). Peak memory consumption was 57.3MB. Max. memory is 16.1GB. [2024-11-09 05:09:22,060 INFO L158 Benchmark]: Witness Printer took 204.04ms. Allocated memory is still 327.2MB. Free memory was 163.6MB in the beginning and 151.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 05:09:22,062 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 142.6MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 638.64ms. Allocated memory is still 142.6MB. Free memory was 101.6MB in the beginning and 72.9MB in the end (delta: 28.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 103.19ms. Allocated memory is still 142.6MB. Free memory was 72.9MB in the beginning and 67.5MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.00ms. Allocated memory is still 142.6MB. Free memory was 67.4MB in the beginning and 62.8MB in the end (delta: 4.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1803.05ms. Allocated memory was 142.6MB in the beginning and 188.7MB in the end (delta: 46.1MB). Free memory was 62.8MB in the beginning and 82.5MB in the end (delta: -19.7MB). Peak memory consumption was 32.4MB. Max. memory is 16.1GB. * TraceAbstraction took 10689.91ms. Allocated memory was 188.7MB in the beginning and 327.2MB in the end (delta: 138.4MB). Free memory was 82.5MB in the beginning and 163.6MB in the end (delta: -81.1MB). Peak memory consumption was 57.3MB. Max. memory is 16.1GB. * Witness Printer took 204.04ms. Allocated memory is still 327.2MB. Free memory was 163.6MB in the beginning and 151.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. 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: 527]: 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, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.3s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 590 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 590 mSDsluCounter, 866 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 640 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2682 IncrementalHoareTripleChecker+Invalid, 3322 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 640 mSolverCounterUnsat, 816 mSDtfsCounter, 2682 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 407 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1363occurred in iteration=5, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 560 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1923 NumberOfCodeBlocks, 1923 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1908 ConstructedInterpolants, 0 QuantifiedInterpolants, 7206 SizeOfPredicates, 0 NumberOfNonLiveVariables, 867 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 12 PerfectInterpolantSequences, 940/975 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: 616]: Loop Invariant Derived loop invariant: (((((((((((a17 == 8) && (a28 <= 10)) && (a19 <= 0)) || ((a17 == 8) && (a28 <= 7))) || ((((a17 == 8) && (a25 == 1)) && (a19 == 1)) && (a11 != 1))) || (((a17 == 8) && (a28 <= 10)) && (a19 == 1))) || ((a17 <= 7) && (a19 <= 0))) || (((a17 == 8) && (a28 <= 10)) && (a11 != 1))) || (((a25 == 1) && (a11 == 1)) && (a17 <= 7))) || (((a17 <= 7) && (a28 == 10)) && (a19 == 1))) || ((((a25 == 1) && (a19 == 1)) && (a11 != 1)) && (a28 <= 7))) RESULT: Ultimate proved your program to be correct! [2024-11-09 05:09:22,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fdaee3b-6d2a-45d5-9b67-020e51db056f/bin/utaipan-verify-YMUCfTKeje/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