./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label40.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label40.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ --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 900911d117d2a4a3062d2b03399834d3e2a3c11368e6157a9f6639c66e4382eb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:16:45,195 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:16:45,280 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:16:45,286 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:16:45,287 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:16:45,319 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:16:45,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:16:45,321 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:16:45,322 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:16:45,323 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:16:45,324 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:16:45,324 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:16:45,325 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:16:45,326 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:16:45,326 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:16:45,327 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:16:45,328 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:16:45,329 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:16:45,329 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:16:45,330 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:16:45,331 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:16:45,332 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:16:45,333 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:16:45,333 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:16:45,334 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:16:45,335 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:16:45,335 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:16:45,336 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:16:45,337 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:16:45,337 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:16:45,338 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:16:45,338 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:16:45,339 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:16:45,339 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:16:45,340 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:16:45,341 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:16:45,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:16:45,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:16:45,342 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:16:45,343 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:16:45,343 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:16:45,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:16:45,344 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:16:45,345 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:16:45,345 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:16:45,345 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_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 900911d117d2a4a3062d2b03399834d3e2a3c11368e6157a9f6639c66e4382eb [2023-11-19 04:16:45,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:16:45,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:16:45,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:16:45,749 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:16:45,750 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:16:45,752 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/eca-rers2012/Problem01_label40.c [2023-11-19 04:16:49,112 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:16:49,412 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:16:49,413 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/sv-benchmarks/c/eca-rers2012/Problem01_label40.c [2023-11-19 04:16:49,430 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/data/a501703c1/d8175e411ded4b82986e5112d6bb2285/FLAG3fd706b58 [2023-11-19 04:16:49,446 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/data/a501703c1/d8175e411ded4b82986e5112d6bb2285 [2023-11-19 04:16:49,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:16:49,451 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:16:49,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:16:49,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:16:49,473 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:16:49,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:16:49" (1/1) ... [2023-11-19 04:16:49,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e1a4595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:49, skipping insertion in model container [2023-11-19 04:16:49,475 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:16:49" (1/1) ... [2023-11-19 04:16:49,549 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:16:49,899 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/sv-benchmarks/c/eca-rers2012/Problem01_label40.c[16376,16389] [2023-11-19 04:16:49,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:16:49,994 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:16:50,152 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/sv-benchmarks/c/eca-rers2012/Problem01_label40.c[16376,16389] [2023-11-19 04:16:50,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:16:50,210 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:16:50,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50 WrapperNode [2023-11-19 04:16:50,211 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:16:50,213 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:16:50,213 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:16:50,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:16:50,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:50,245 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:50,310 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 658 [2023-11-19 04:16:50,310 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:16:50,311 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:16:50,311 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:16:50,311 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:16:50,324 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:50,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:50,329 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:50,329 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:50,357 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:50,366 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:50,374 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:50,379 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:50,403 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:16:50,404 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:16:50,404 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:16:50,405 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:16:50,405 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:50,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:16:50,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:16:50,451 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:16:50,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:16:50,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:16:50,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:16:50,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:16:50,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:16:50,609 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:16:50,613 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:16:51,811 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:16:52,146 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:16:52,146 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:16:52,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:16:52 BoogieIcfgContainer [2023-11-19 04:16:52,155 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:16:52,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:16:52,160 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:16:52,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:16:52,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:16:49" (1/3) ... [2023-11-19 04:16:52,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a76975b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:16:52, skipping insertion in model container [2023-11-19 04:16:52,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (2/3) ... [2023-11-19 04:16:52,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a76975b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:16:52, skipping insertion in model container [2023-11-19 04:16:52,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:16:52" (3/3) ... [2023-11-19 04:16:52,169 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label40.c [2023-11-19 04:16:52,195 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:16:52,195 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:16:52,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:16:52,273 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@45a6b51a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:16:52,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:16:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:16:52,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 04:16:52,295 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:52,298 INFO L195 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] [2023-11-19 04:16:52,298 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:16:52,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:52,309 INFO L85 PathProgramCache]: Analyzing trace with hash 379009982, now seen corresponding path program 1 times [2023-11-19 04:16:52,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:16:52,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956555974] [2023-11-19 04:16:52,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:52,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:16:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:16:53,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:16:53,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956555974] [2023-11-19 04:16:53,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956555974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:53,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:16:53,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:16:53,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126700486] [2023-11-19 04:16:53,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:53,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:16:53,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:16:53,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:16:53,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:16:53,092 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:16:53,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:16:53,766 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2023-11-19 04:16:53,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:16:53,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 71 [2023-11-19 04:16:53,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:16:53,787 INFO L225 Difference]: With dead ends: 224 [2023-11-19 04:16:53,787 INFO L226 Difference]: Without dead ends: 145 [2023-11-19 04:16:53,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:16:53,797 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:16:53,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 17 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 04:16:53,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-19 04:16:53,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-11-19 04:16:53,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.8819444444444444) internal successors, (271), 144 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:16:53,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 271 transitions. [2023-11-19 04:16:53,869 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 271 transitions. Word has length 71 [2023-11-19 04:16:53,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:16:53,870 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 271 transitions. [2023-11-19 04:16:53,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:16:53,871 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 271 transitions. [2023-11-19 04:16:53,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 04:16:53,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:53,876 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 04:16:53,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:16:53,877 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:16:53,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:53,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1708116982, now seen corresponding path program 1 times [2023-11-19 04:16:53,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:16:53,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123676893] [2023-11-19 04:16:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:53,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:16:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:54,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:16:54,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:16:54,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123676893] [2023-11-19 04:16:54,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123676893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:54,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:16:54,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:16:54,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851383834] [2023-11-19 04:16:54,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:54,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:16:54,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:16:54,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:16:54,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:16:54,034 INFO L87 Difference]: Start difference. First operand 145 states and 271 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:16:54,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:16:54,536 INFO L93 Difference]: Finished difference Result 431 states and 810 transitions. [2023-11-19 04:16:54,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:16:54,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 76 [2023-11-19 04:16:54,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:16:54,540 INFO L225 Difference]: With dead ends: 431 [2023-11-19 04:16:54,540 INFO L226 Difference]: Without dead ends: 287 [2023-11-19 04:16:54,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:16:54,544 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 112 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:16:54,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 25 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 04:16:54,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-19 04:16:54,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2023-11-19 04:16:54,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.7622377622377623) internal successors, (504), 286 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:16:54,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 504 transitions. [2023-11-19 04:16:54,581 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 504 transitions. Word has length 76 [2023-11-19 04:16:54,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:16:54,582 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 504 transitions. [2023-11-19 04:16:54,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:16:54,582 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 504 transitions. [2023-11-19 04:16:54,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-19 04:16:54,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:54,591 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 04:16:54,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:16:54,592 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:16:54,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:54,600 INFO L85 PathProgramCache]: Analyzing trace with hash 714028701, now seen corresponding path program 1 times [2023-11-19 04:16:54,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:16:54,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248397998] [2023-11-19 04:16:54,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:54,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:16:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:16:54,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:16:54,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248397998] [2023-11-19 04:16:54,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248397998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:54,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:16:54,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:16:54,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389420594] [2023-11-19 04:16:54,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:54,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:16:54,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:16:54,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:16:54,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:16:54,986 INFO L87 Difference]: Start difference. First operand 287 states and 504 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 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) [2023-11-19 04:16:55,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:16:55,450 INFO L93 Difference]: Finished difference Result 786 states and 1371 transitions. [2023-11-19 04:16:55,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:16:55,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 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 86 [2023-11-19 04:16:55,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:16:55,454 INFO L225 Difference]: With dead ends: 786 [2023-11-19 04:16:55,454 INFO L226 Difference]: Without dead ends: 500 [2023-11-19 04:16:55,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:16:55,462 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 62 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:16:55,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 52 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:16:55,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-19 04:16:55,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 429. [2023-11-19 04:16:55,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.5934579439252337) internal successors, (682), 428 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:16:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 682 transitions. [2023-11-19 04:16:55,500 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 682 transitions. Word has length 86 [2023-11-19 04:16:55,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:16:55,501 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 682 transitions. [2023-11-19 04:16:55,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 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) [2023-11-19 04:16:55,502 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 682 transitions. [2023-11-19 04:16:55,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-19 04:16:55,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:55,519 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-19 04:16:55,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:16:55,520 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:16:55,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:55,521 INFO L85 PathProgramCache]: Analyzing trace with hash 763837997, now seen corresponding path program 1 times [2023-11-19 04:16:55,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:16:55,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657544743] [2023-11-19 04:16:55,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:55,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:16:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 04:16:55,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:16:55,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657544743] [2023-11-19 04:16:55,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657544743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:55,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:16:55,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:16:55,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231063493] [2023-11-19 04:16:55,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:55,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:16:55,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:16:55,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:16:55,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:16:55,783 INFO L87 Difference]: Start difference. First operand 429 states and 682 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) [2023-11-19 04:16:56,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:16:56,194 INFO L93 Difference]: Finished difference Result 999 states and 1596 transitions. [2023-11-19 04:16:56,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:16:56,194 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 87 [2023-11-19 04:16:56,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:16:56,198 INFO L225 Difference]: With dead ends: 999 [2023-11-19 04:16:56,199 INFO L226 Difference]: Without dead ends: 571 [2023-11-19 04:16:56,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:16:56,206 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 71 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:16:56,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 57 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:16:56,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2023-11-19 04:16:56,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2023-11-19 04:16:56,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.5087719298245614) internal successors, (860), 570 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:16:56,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 860 transitions. [2023-11-19 04:16:56,254 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 860 transitions. Word has length 87 [2023-11-19 04:16:56,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:16:56,257 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 860 transitions. [2023-11-19 04:16:56,257 INFO L496 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) [2023-11-19 04:16:56,257 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 860 transitions. [2023-11-19 04:16:56,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-19 04:16:56,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:56,261 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-19 04:16:56,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:16:56,261 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:16:56,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:56,262 INFO L85 PathProgramCache]: Analyzing trace with hash -2013623963, now seen corresponding path program 1 times [2023-11-19 04:16:56,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:16:56,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965295619] [2023-11-19 04:16:56,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:56,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:16:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:16:56,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:16:56,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965295619] [2023-11-19 04:16:56,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965295619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:56,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:16:56,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:16:56,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265567491] [2023-11-19 04:16:56,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:56,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:16:56,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:16:56,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:16:56,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:16:56,593 INFO L87 Difference]: Start difference. First operand 571 states and 860 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 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) [2023-11-19 04:16:57,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:16:57,172 INFO L93 Difference]: Finished difference Result 1425 states and 2111 transitions. [2023-11-19 04:16:57,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:16:57,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 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 [2023-11-19 04:16:57,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:16:57,178 INFO L225 Difference]: With dead ends: 1425 [2023-11-19 04:16:57,179 INFO L226 Difference]: Without dead ends: 855 [2023-11-19 04:16:57,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:16:57,181 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 199 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:16:57,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 54 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 04:16:57,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-11-19 04:16:57,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2023-11-19 04:16:57,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.4546615581098339) internal successors, (1139), 783 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:16:57,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1139 transitions. [2023-11-19 04:16:57,210 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1139 transitions. Word has length 90 [2023-11-19 04:16:57,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:16:57,211 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1139 transitions. [2023-11-19 04:16:57,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 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) [2023-11-19 04:16:57,212 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1139 transitions. [2023-11-19 04:16:57,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-19 04:16:57,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:57,214 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:16:57,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:16:57,215 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:16:57,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:57,216 INFO L85 PathProgramCache]: Analyzing trace with hash 683567014, now seen corresponding path program 1 times [2023-11-19 04:16:57,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:16:57,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624172913] [2023-11-19 04:16:57,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:57,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:16:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 04:16:57,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:16:57,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624172913] [2023-11-19 04:16:57,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624172913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:57,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:16:57,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:16:57,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129336159] [2023-11-19 04:16:57,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:57,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:16:57,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:16:57,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:16:57,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:16:57,416 INFO L87 Difference]: Start difference. First operand 784 states and 1139 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:16:57,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:16:57,781 INFO L93 Difference]: Finished difference Result 928 states and 1330 transitions. [2023-11-19 04:16:57,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:16:57,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 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 108 [2023-11-19 04:16:57,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:16:57,794 INFO L225 Difference]: With dead ends: 928 [2023-11-19 04:16:57,795 INFO L226 Difference]: Without dead ends: 926 [2023-11-19 04:16:57,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:16:57,798 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:16:57,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 27 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:16:57,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-11-19 04:16:57,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2023-11-19 04:16:57,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.4533844189016603) internal successors, (1138), 783 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:16:57,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1138 transitions. [2023-11-19 04:16:57,844 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1138 transitions. Word has length 108 [2023-11-19 04:16:57,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:16:57,845 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1138 transitions. [2023-11-19 04:16:57,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:16:57,846 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1138 transitions. [2023-11-19 04:16:57,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-19 04:16:57,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:57,853 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-19 04:16:57,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 04:16:57,853 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:16:57,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:57,854 INFO L85 PathProgramCache]: Analyzing trace with hash 851743694, now seen corresponding path program 1 times [2023-11-19 04:16:57,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:16:57,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059884556] [2023-11-19 04:16:57,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:57,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:16:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-19 04:16:58,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:16:58,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059884556] [2023-11-19 04:16:58,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059884556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:58,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:16:58,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:16:58,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105280464] [2023-11-19 04:16:58,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:58,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:16:58,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:16:58,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:16:58,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:16:58,181 INFO L87 Difference]: Start difference. First operand 784 states and 1138 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:16:58,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:16:58,795 INFO L93 Difference]: Finished difference Result 1851 states and 2697 transitions. [2023-11-19 04:16:58,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:16:58,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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 163 [2023-11-19 04:16:58,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:16:58,804 INFO L225 Difference]: With dead ends: 1851 [2023-11-19 04:16:58,804 INFO L226 Difference]: Without dead ends: 1068 [2023-11-19 04:16:58,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:16:58,809 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 108 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:16:58,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 45 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 04:16:58,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2023-11-19 04:16:58,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2023-11-19 04:16:58,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.3837837837837839) internal successors, (1280), 925 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:16:58,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1280 transitions. [2023-11-19 04:16:58,842 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1280 transitions. Word has length 163 [2023-11-19 04:16:58,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:16:58,843 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1280 transitions. [2023-11-19 04:16:58,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:16:58,844 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1280 transitions. [2023-11-19 04:16:58,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-19 04:16:58,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:58,849 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:16:58,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 04:16:58,849 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:16:58,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:58,850 INFO L85 PathProgramCache]: Analyzing trace with hash -280569105, now seen corresponding path program 1 times [2023-11-19 04:16:58,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:16:58,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850210139] [2023-11-19 04:16:58,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:58,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:16:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:59,368 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-19 04:16:59,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:16:59,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850210139] [2023-11-19 04:16:59,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850210139] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:16:59,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702575929] [2023-11-19 04:16:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:59,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:16:59,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:16:59,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:16:59,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:16:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:59,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:16:59,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:16:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-19 04:16:59,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:16:59,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702575929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:59,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:16:59,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-19 04:16:59,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280664407] [2023-11-19 04:16:59,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:59,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:16:59,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:16:59,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:16:59,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:16:59,947 INFO L87 Difference]: Start difference. First operand 926 states and 1280 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) [2023-11-19 04:17:00,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:00,328 INFO L93 Difference]: Finished difference Result 1849 states and 2558 transitions. [2023-11-19 04:17:00,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:17:00,329 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 176 [2023-11-19 04:17:00,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:00,330 INFO L225 Difference]: With dead ends: 1849 [2023-11-19 04:17:00,330 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 04:17:00,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:17:00,334 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:17:00,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 123 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:17:00,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 04:17:00,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 04:17:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:00,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 04:17:00,338 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2023-11-19 04:17:00,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:00,338 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 04:17:00,338 INFO L496 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) [2023-11-19 04:17:00,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 04:17:00,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 04:17:00,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:17:00,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:17:00,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 04:17:00,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 04:17:00,781 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2023-11-19 04:17:00,781 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2023-11-19 04:17:00,781 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2023-11-19 04:17:00,782 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2023-11-19 04:17:00,782 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2023-11-19 04:17:00,782 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2023-11-19 04:17:00,782 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2023-11-19 04:17:00,782 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2023-11-19 04:17:00,783 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2023-11-19 04:17:00,783 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2023-11-19 04:17:00,783 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2023-11-19 04:17:00,783 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2023-11-19 04:17:00,783 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2023-11-19 04:17:00,783 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2023-11-19 04:17:00,784 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2023-11-19 04:17:00,784 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2023-11-19 04:17:00,784 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2023-11-19 04:17:00,784 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2023-11-19 04:17:00,784 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2023-11-19 04:17:00,785 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2023-11-19 04:17:00,785 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2023-11-19 04:17:00,785 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2023-11-19 04:17:00,785 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2023-11-19 04:17:00,785 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2023-11-19 04:17:00,785 INFO L899 garLoopResultBuilder]: For program point L443-1(lines 40 585) no Hoare annotation was computed. [2023-11-19 04:17:00,786 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2023-11-19 04:17:00,786 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2023-11-19 04:17:00,786 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2023-11-19 04:17:00,786 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2023-11-19 04:17:00,786 INFO L899 garLoopResultBuilder]: For program point L446-1(lines 40 585) no Hoare annotation was computed. [2023-11-19 04:17:00,787 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2023-11-19 04:17:00,787 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2023-11-19 04:17:00,787 INFO L899 garLoopResultBuilder]: For program point L447(line 447) no Hoare annotation was computed. [2023-11-19 04:17:00,787 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2023-11-19 04:17:00,787 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2023-11-19 04:17:00,787 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2023-11-19 04:17:00,788 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2023-11-19 04:17:00,788 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2023-11-19 04:17:00,788 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2023-11-19 04:17:00,788 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2023-11-19 04:17:00,788 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2023-11-19 04:17:00,788 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2023-11-19 04:17:00,789 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2023-11-19 04:17:00,789 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2023-11-19 04:17:00,789 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2023-11-19 04:17:00,789 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2023-11-19 04:17:00,789 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2023-11-19 04:17:00,789 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2023-11-19 04:17:00,790 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2023-11-19 04:17:00,790 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 04:17:00,790 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2023-11-19 04:17:00,790 INFO L899 garLoopResultBuilder]: For program point L587(lines 587 604) no Hoare annotation was computed. [2023-11-19 04:17:00,790 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2023-11-19 04:17:00,790 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2023-11-19 04:17:00,791 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2023-11-19 04:17:00,791 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2023-11-19 04:17:00,791 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2023-11-19 04:17:00,791 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2023-11-19 04:17:00,791 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2023-11-19 04:17:00,791 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 04:17:00,792 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2023-11-19 04:17:00,792 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2023-11-19 04:17:00,792 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2023-11-19 04:17:00,792 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2023-11-19 04:17:00,792 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2023-11-19 04:17:00,792 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2023-11-19 04:17:00,793 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse3 (= ~a20~0 1)) (.cse0 (= ~a21~0 1)) (.cse4 (<= ~a21~0 0)) (.cse2 (= ~a17~0 1)) (.cse1 (<= ~a16~0 5))) (or (and .cse0 .cse1) (and .cse0 .cse2 .cse3) (and .cse4 .cse3) (and .cse0 (<= 15 ~a8~0)) (and .cse4 .cse2 .cse1))) [2023-11-19 04:17:00,793 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2023-11-19 04:17:00,793 INFO L899 garLoopResultBuilder]: For program point calculate_output_returnLabel#1(lines 40 585) no Hoare annotation was computed. [2023-11-19 04:17:00,794 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 447) no Hoare annotation was computed. [2023-11-19 04:17:00,794 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2023-11-19 04:17:00,794 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2023-11-19 04:17:00,794 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2023-11-19 04:17:00,794 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2023-11-19 04:17:00,794 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2023-11-19 04:17:00,795 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2023-11-19 04:17:00,798 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:17:00,801 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:17:00,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:17:00 BoogieIcfgContainer [2023-11-19 04:17:00,820 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:17:00,821 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:17:00,821 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:17:00,821 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:17:00,822 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:16:52" (3/4) ... [2023-11-19 04:17:00,824 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 04:17:00,846 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2023-11-19 04:17:00,850 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-19 04:17:00,851 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-19 04:17:00,853 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 04:17:01,049 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:17:01,050 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 04:17:01,050 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:17:01,050 INFO L158 Benchmark]: Toolchain (without parser) took 11600.00ms. Allocated memory was 127.9MB in the beginning and 243.3MB in the end (delta: 115.3MB). Free memory was 81.3MB in the beginning and 82.3MB in the end (delta: -995.2kB). Peak memory consumption was 117.0MB. Max. memory is 16.1GB. [2023-11-19 04:17:01,051 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 127.9MB. Free memory was 74.7MB in the beginning and 74.5MB in the end (delta: 151.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:17:01,051 INFO L158 Benchmark]: CACSL2BoogieTranslator took 759.09ms. Allocated memory was 127.9MB in the beginning and 165.7MB in the end (delta: 37.7MB). Free memory was 81.0MB in the beginning and 131.9MB in the end (delta: -50.9MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. [2023-11-19 04:17:01,052 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.39ms. Allocated memory is still 165.7MB. Free memory was 131.9MB in the beginning and 126.4MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 04:17:01,052 INFO L158 Benchmark]: Boogie Preprocessor took 92.61ms. Allocated memory is still 165.7MB. Free memory was 126.4MB in the beginning and 121.5MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 04:17:01,052 INFO L158 Benchmark]: RCFGBuilder took 1750.71ms. Allocated memory is still 165.7MB. Free memory was 121.5MB in the beginning and 106.1MB in the end (delta: 15.4MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. [2023-11-19 04:17:01,053 INFO L158 Benchmark]: TraceAbstraction took 8660.69ms. Allocated memory was 165.7MB in the beginning and 243.3MB in the end (delta: 77.6MB). Free memory was 105.0MB in the beginning and 95.9MB in the end (delta: 9.1MB). Peak memory consumption was 87.7MB. Max. memory is 16.1GB. [2023-11-19 04:17:01,053 INFO L158 Benchmark]: Witness Printer took 228.84ms. Allocated memory is still 243.3MB. Free memory was 95.9MB in the beginning and 82.3MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 04:17:01,055 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 127.9MB. Free memory was 74.7MB in the beginning and 74.5MB in the end (delta: 151.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 759.09ms. Allocated memory was 127.9MB in the beginning and 165.7MB in the end (delta: 37.7MB). Free memory was 81.0MB in the beginning and 131.9MB in the end (delta: -50.9MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.39ms. Allocated memory is still 165.7MB. Free memory was 131.9MB in the beginning and 126.4MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 92.61ms. Allocated memory is still 165.7MB. Free memory was 126.4MB in the beginning and 121.5MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1750.71ms. Allocated memory is still 165.7MB. Free memory was 121.5MB in the beginning and 106.1MB in the end (delta: 15.4MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. * TraceAbstraction took 8660.69ms. Allocated memory was 165.7MB in the beginning and 243.3MB in the end (delta: 77.6MB). Free memory was 105.0MB in the beginning and 95.9MB in the end (delta: 9.1MB). Peak memory consumption was 87.7MB. Max. memory is 16.1GB. * Witness Printer took 228.84ms. Allocated memory is still 243.3MB. Free memory was 95.9MB in the beginning and 82.3MB in the end (delta: 13.6MB). 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: 447]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.6s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 601 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 601 mSDsluCounter, 400 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 549 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1989 IncrementalHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 549 mSolverCounterUnsat, 361 mSDtfsCounter, 1989 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=926occurred in iteration=7, InterpolantAutomatonStates: 26, 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, 8 MinimizatonAttempts, 426 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 14 NumberOfFragments, 42 HoareAnnotationTreeSize, 1 FomulaSimplifications, 198 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 229 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1033 NumberOfCodeBlocks, 1033 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1024 ConstructedInterpolants, 0 QuantifiedInterpolants, 2352 SizeOfPredicates, 0 NumberOfNonLiveVariables, 398 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 691/702 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: 593]: Loop Invariant Derived loop invariant: ((((((a21 == 1) && (a16 <= 5)) || (((a21 == 1) && (a17 == 1)) && (a20 == 1))) || ((a21 <= 0) && (a20 == 1))) || ((a21 == 1) && (15 <= a8))) || (((a21 <= 0) && (a17 == 1)) && (a16 <= 5))) RESULT: Ultimate proved your program to be correct! [2023-11-19 04:17:01,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff28ed9-1cb4-46e6-b46c-8881a85f0cef/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE