./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label42.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label42.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX --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 c7dfdd48559e277969e6cd247a38d61c593012cd8d98b191a78a0b1ef65f4128 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:53:12,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:53:13,076 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:53:13,092 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:53:13,093 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:53:13,161 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:53:13,162 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:53:13,163 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:53:13,165 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:53:13,171 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:53:13,171 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:53:13,173 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:53:13,173 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:53:13,176 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:53:13,176 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:53:13,177 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:53:13,177 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:53:13,178 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:53:13,178 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:53:13,179 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:53:13,180 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:53:13,180 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:53:13,182 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:53:13,183 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:53:13,183 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:53:13,184 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:53:13,184 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:53:13,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:53:13,185 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:53:13,186 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:53:13,187 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:53:13,188 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:53:13,188 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:53:13,189 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:53:13,189 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:53:13,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:53:13,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:53:13,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:53:13,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:53:13,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:53:13,211 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:53:13,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:53:13,212 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:53:13,212 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:53:13,212 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:53:13,213 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_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7dfdd48559e277969e6cd247a38d61c593012cd8d98b191a78a0b1ef65f4128 [2023-11-12 00:53:13,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:53:13,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:53:13,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:53:13,631 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:53:13,637 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:53:13,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/eca-rers2012/Problem01_label42.c [2023-11-12 00:53:16,890 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:53:17,280 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:53:17,280 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/sv-benchmarks/c/eca-rers2012/Problem01_label42.c [2023-11-12 00:53:17,294 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/data/3e67d280a/60ec5522d6814096b81573a920dbe2c2/FLAGfb53b3e08 [2023-11-12 00:53:17,329 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/data/3e67d280a/60ec5522d6814096b81573a920dbe2c2 [2023-11-12 00:53:17,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:53:17,333 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:53:17,334 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:53:17,335 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:53:17,340 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:53:17,341 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:53:17" (1/1) ... [2023-11-12 00:53:17,342 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:17, skipping insertion in model container [2023-11-12 00:53:17,342 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:53:17" (1/1) ... [2023-11-12 00:53:17,391 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:53:17,777 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_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/sv-benchmarks/c/eca-rers2012/Problem01_label42.c[19849,19862] [2023-11-12 00:53:17,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:53:17,849 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:53:18,039 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_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/sv-benchmarks/c/eca-rers2012/Problem01_label42.c[19849,19862] [2023-11-12 00:53:18,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:53:18,086 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:53:18,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:18 WrapperNode [2023-11-12 00:53:18,087 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:53:18,088 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:53:18,089 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:53:18,089 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:53:18,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:18" (1/1) ... [2023-11-12 00:53:18,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:18" (1/1) ... [2023-11-12 00:53:18,202 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 658 [2023-11-12 00:53:18,203 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:53:18,204 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:53:18,204 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:53:18,204 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:53:18,216 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:18" (1/1) ... [2023-11-12 00:53:18,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:18" (1/1) ... [2023-11-12 00:53:18,226 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:18" (1/1) ... [2023-11-12 00:53:18,226 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:18" (1/1) ... [2023-11-12 00:53:18,258 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:18" (1/1) ... [2023-11-12 00:53:18,268 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:18" (1/1) ... [2023-11-12 00:53:18,276 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:18" (1/1) ... [2023-11-12 00:53:18,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:18" (1/1) ... [2023-11-12 00:53:18,292 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:53:18,293 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:53:18,293 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:53:18,294 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:53:18,295 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:18" (1/1) ... [2023-11-12 00:53:18,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:53:18,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:53:18,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:53:18,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:53:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:53:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:53:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:53:18,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:53:18,503 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:53:18,506 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:53:19,869 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:53:20,235 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:53:20,236 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:53:20,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:53:20 BoogieIcfgContainer [2023-11-12 00:53:20,240 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:53:20,245 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:53:20,246 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:53:20,249 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:53:20,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:53:17" (1/3) ... [2023-11-12 00:53:20,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593e9009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:53:20, skipping insertion in model container [2023-11-12 00:53:20,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:18" (2/3) ... [2023-11-12 00:53:20,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593e9009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:53:20, skipping insertion in model container [2023-11-12 00:53:20,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:53:20" (3/3) ... [2023-11-12 00:53:20,257 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label42.c [2023-11-12 00:53:20,280 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:53:20,280 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:53:20,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:53:20,364 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;@6e69eae6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:53:20,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:53:20,371 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) [2023-11-12 00:53:20,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-12 00:53:20,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:20,389 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] [2023-11-12 00:53:20,390 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:53:20,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:20,399 INFO L85 PathProgramCache]: Analyzing trace with hash 379025799, now seen corresponding path program 1 times [2023-11-12 00:53:20,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:20,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067437701] [2023-11-12 00:53:20,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:20,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:21,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:21,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:53:21,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067437701] [2023-11-12 00:53:21,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067437701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:53:21,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:53:21,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:53:21,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623695549] [2023-11-12 00:53:21,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:53:21,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:53:21,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:53:21,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:53:21,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:53:21,072 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) [2023-11-12 00:53:21,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:21,600 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2023-11-12 00:53:21,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:53:21,603 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 [2023-11-12 00:53:21,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:21,627 INFO L225 Difference]: With dead ends: 224 [2023-11-12 00:53:21,627 INFO L226 Difference]: Without dead ends: 145 [2023-11-12 00:53:21,634 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 [2023-11-12 00:53:21,642 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:21,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 36 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:53:21,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-12 00:53:21,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-11-12 00:53:21,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7569444444444444) internal successors, (253), 144 states have internal predecessors, (253), 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) [2023-11-12 00:53:21,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 253 transitions. [2023-11-12 00:53:21,705 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 253 transitions. Word has length 71 [2023-11-12 00:53:21,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:21,706 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 253 transitions. [2023-11-12 00:53:21,706 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) [2023-11-12 00:53:21,706 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 253 transitions. [2023-11-12 00:53:21,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-12 00:53:21,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:21,711 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:53:21,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:53:21,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:53:21,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:21,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1189482561, now seen corresponding path program 1 times [2023-11-12 00:53:21,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:21,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168600388] [2023-11-12 00:53:21,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:21,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 00:53:21,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:53:21,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168600388] [2023-11-12 00:53:21,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168600388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:53:21,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:53:21,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:53:21,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503284137] [2023-11-12 00:53:21,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:53:21,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:53:21,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:53:21,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:53:21,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:53:21,967 INFO L87 Difference]: Start difference. First operand 145 states and 253 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) [2023-11-12 00:53:22,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:22,425 INFO L93 Difference]: Finished difference Result 431 states and 756 transitions. [2023-11-12 00:53:22,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:53:22,426 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 75 [2023-11-12 00:53:22,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:22,430 INFO L225 Difference]: With dead ends: 431 [2023-11-12 00:53:22,430 INFO L226 Difference]: Without dead ends: 287 [2023-11-12 00:53:22,432 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 [2023-11-12 00:53:22,434 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:22,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 27 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:53:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-12 00:53:22,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2023-11-12 00:53:22,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.632867132867133) internal successors, (467), 286 states have internal predecessors, (467), 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) [2023-11-12 00:53:22,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2023-11-12 00:53:22,460 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 75 [2023-11-12 00:53:22,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:22,461 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2023-11-12 00:53:22,462 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) [2023-11-12 00:53:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2023-11-12 00:53:22,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-12 00:53:22,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:22,467 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:53:22,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:53:22,467 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:53:22,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:22,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1933825291, now seen corresponding path program 1 times [2023-11-12 00:53:22,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:22,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469874432] [2023-11-12 00:53:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:22,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:22,757 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:53:22,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:53:22,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469874432] [2023-11-12 00:53:22,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469874432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:53:22,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:53:22,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:53:22,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340670307] [2023-11-12 00:53:22,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:53:22,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:53:22,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:53:22,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:53:22,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:53:22,769 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:23,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:23,207 INFO L93 Difference]: Finished difference Result 715 states and 1184 transitions. [2023-11-12 00:53:23,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:53:23,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-11-12 00:53:23,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:23,212 INFO L225 Difference]: With dead ends: 715 [2023-11-12 00:53:23,212 INFO L226 Difference]: Without dead ends: 429 [2023-11-12 00:53:23,214 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 [2023-11-12 00:53:23,216 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 87 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:23,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 26 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:53:23,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2023-11-12 00:53:23,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2023-11-12 00:53:23,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6442577030812324) internal successors, (587), 357 states have internal predecessors, (587), 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) [2023-11-12 00:53:23,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 587 transitions. [2023-11-12 00:53:23,260 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 587 transitions. Word has length 105 [2023-11-12 00:53:23,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:23,261 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 587 transitions. [2023-11-12 00:53:23,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:23,261 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 587 transitions. [2023-11-12 00:53:23,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-12 00:53:23,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:23,267 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:53:23,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:53:23,267 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:53:23,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:23,271 INFO L85 PathProgramCache]: Analyzing trace with hash 218746303, now seen corresponding path program 1 times [2023-11-12 00:53:23,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:23,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104678412] [2023-11-12 00:53:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:23,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-12 00:53:23,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:53:23,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104678412] [2023-11-12 00:53:23,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104678412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:53:23,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:53:23,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:53:23,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446330796] [2023-11-12 00:53:23,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:53:23,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:53:23,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:53:23,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:53:23,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:53:23,572 INFO L87 Difference]: Start difference. First operand 358 states and 587 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) [2023-11-12 00:53:23,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:23,961 INFO L93 Difference]: Finished difference Result 715 states and 1173 transitions. [2023-11-12 00:53:23,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:53:23,961 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 109 [2023-11-12 00:53:23,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:23,964 INFO L225 Difference]: With dead ends: 715 [2023-11-12 00:53:23,965 INFO L226 Difference]: Without dead ends: 358 [2023-11-12 00:53:23,968 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 [2023-11-12 00:53:23,973 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:23,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 58 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:53:23,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-11-12 00:53:24,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2023-11-12 00:53:24,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6274509803921569) internal successors, (581), 357 states have internal predecessors, (581), 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) [2023-11-12 00:53:24,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2023-11-12 00:53:24,009 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 109 [2023-11-12 00:53:24,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:24,009 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2023-11-12 00:53:24,009 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) [2023-11-12 00:53:24,010 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2023-11-12 00:53:24,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-12 00:53:24,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:24,015 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:53:24,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:53:24,016 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:53:24,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:24,030 INFO L85 PathProgramCache]: Analyzing trace with hash 674879991, now seen corresponding path program 1 times [2023-11-12 00:53:24,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:24,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745286472] [2023-11-12 00:53:24,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:24,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-12 00:53:24,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:53:24,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745286472] [2023-11-12 00:53:24,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745286472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:53:24,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:53:24,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:53:24,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819897492] [2023-11-12 00:53:24,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:53:24,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:53:24,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:53:24,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:53:24,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:53:24,301 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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) [2023-11-12 00:53:24,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:24,714 INFO L93 Difference]: Finished difference Result 857 states and 1369 transitions. [2023-11-12 00:53:24,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:53:24,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 113 [2023-11-12 00:53:24,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:24,719 INFO L225 Difference]: With dead ends: 857 [2023-11-12 00:53:24,719 INFO L226 Difference]: Without dead ends: 500 [2023-11-12 00:53:24,720 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 [2023-11-12 00:53:24,721 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 75 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:24,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 50 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:53:24,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-12 00:53:24,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2023-11-12 00:53:24,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.5210420841683367) internal successors, (759), 499 states have internal predecessors, (759), 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) [2023-11-12 00:53:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 759 transitions. [2023-11-12 00:53:24,751 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 759 transitions. Word has length 113 [2023-11-12 00:53:24,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:24,754 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 759 transitions. [2023-11-12 00:53:24,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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) [2023-11-12 00:53:24,755 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 759 transitions. [2023-11-12 00:53:24,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-12 00:53:24,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:24,762 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:53:24,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:53:24,763 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:53:24,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:24,764 INFO L85 PathProgramCache]: Analyzing trace with hash -692381259, now seen corresponding path program 1 times [2023-11-12 00:53:24,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:24,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76196549] [2023-11-12 00:53:24,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:24,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-12 00:53:25,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:53:25,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76196549] [2023-11-12 00:53:25,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76196549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:53:25,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:53:25,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:53:25,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858341769] [2023-11-12 00:53:25,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:53:25,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:53:25,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:53:25,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:53:25,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:53:25,010 INFO L87 Difference]: Start difference. First operand 500 states and 759 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:25,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:25,415 INFO L93 Difference]: Finished difference Result 1354 states and 2016 transitions. [2023-11-12 00:53:25,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:53:25,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2023-11-12 00:53:25,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:25,424 INFO L225 Difference]: With dead ends: 1354 [2023-11-12 00:53:25,424 INFO L226 Difference]: Without dead ends: 855 [2023-11-12 00:53:25,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:53:25,429 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 76 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:25,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 19 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:53:25,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-11-12 00:53:25,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 642. [2023-11-12 00:53:25,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4804992199687987) internal successors, (949), 641 states have internal predecessors, (949), 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) [2023-11-12 00:53:25,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 949 transitions. [2023-11-12 00:53:25,456 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 949 transitions. Word has length 122 [2023-11-12 00:53:25,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:25,456 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 949 transitions. [2023-11-12 00:53:25,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:25,457 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 949 transitions. [2023-11-12 00:53:25,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-12 00:53:25,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:25,460 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-12 00:53:25,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:53:25,461 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:53:25,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:25,462 INFO L85 PathProgramCache]: Analyzing trace with hash 240375227, now seen corresponding path program 1 times [2023-11-12 00:53:25,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:25,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965982798] [2023-11-12 00:53:25,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:25,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:25,850 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-12 00:53:25,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:53:25,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965982798] [2023-11-12 00:53:25,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965982798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:53:25,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:53:25,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:53:25,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002042562] [2023-11-12 00:53:25,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:53:25,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:53:25,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:53:25,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:53:25,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:53:25,855 INFO L87 Difference]: Start difference. First operand 642 states and 949 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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) [2023-11-12 00:53:26,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:26,251 INFO L93 Difference]: Finished difference Result 1354 states and 2010 transitions. [2023-11-12 00:53:26,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:53:26,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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 138 [2023-11-12 00:53:26,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:26,258 INFO L225 Difference]: With dead ends: 1354 [2023-11-12 00:53:26,259 INFO L226 Difference]: Without dead ends: 713 [2023-11-12 00:53:26,260 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 [2023-11-12 00:53:26,263 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 48 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:26,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 58 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:53:26,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2023-11-12 00:53:26,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2023-11-12 00:53:26,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 1.4578651685393258) internal successors, (1038), 712 states have internal predecessors, (1038), 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) [2023-11-12 00:53:26,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1038 transitions. [2023-11-12 00:53:26,299 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1038 transitions. Word has length 138 [2023-11-12 00:53:26,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:26,300 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 1038 transitions. [2023-11-12 00:53:26,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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) [2023-11-12 00:53:26,300 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1038 transitions. [2023-11-12 00:53:26,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-12 00:53:26,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:26,304 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-12 00:53:26,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:53:26,305 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:53:26,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:26,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1229086309, now seen corresponding path program 1 times [2023-11-12 00:53:26,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:26,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042224152] [2023-11-12 00:53:26,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:26,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-12 00:53:26,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:53:26,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042224152] [2023-11-12 00:53:26,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042224152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:53:26,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:53:26,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:53:26,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151714855] [2023-11-12 00:53:26,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:53:26,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:53:26,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:53:26,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:53:26,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:53:26,714 INFO L87 Difference]: Start difference. First operand 713 states and 1038 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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) [2023-11-12 00:53:27,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:27,358 INFO L93 Difference]: Finished difference Result 1638 states and 2336 transitions. [2023-11-12 00:53:27,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:53:27,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-11-12 00:53:27,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:27,367 INFO L225 Difference]: With dead ends: 1638 [2023-11-12 00:53:27,368 INFO L226 Difference]: Without dead ends: 926 [2023-11-12 00:53:27,369 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 [2023-11-12 00:53:27,371 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 125 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:27,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 53 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 00:53:27,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-11-12 00:53:27,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2023-11-12 00:53:27,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.3887587822014051) internal successors, (1186), 854 states have internal predecessors, (1186), 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) [2023-11-12 00:53:27,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1186 transitions. [2023-11-12 00:53:27,407 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1186 transitions. Word has length 154 [2023-11-12 00:53:27,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:27,408 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1186 transitions. [2023-11-12 00:53:27,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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) [2023-11-12 00:53:27,409 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1186 transitions. [2023-11-12 00:53:27,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-12 00:53:27,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:27,414 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-12 00:53:27,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 00:53:27,414 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:53:27,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:27,415 INFO L85 PathProgramCache]: Analyzing trace with hash -2145597496, now seen corresponding path program 1 times [2023-11-12 00:53:27,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:27,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201076630] [2023-11-12 00:53:27,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:27,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-12 00:53:27,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:53:27,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201076630] [2023-11-12 00:53:27,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201076630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:53:27,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:53:27,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:53:27,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832057395] [2023-11-12 00:53:27,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:53:27,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:53:27,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:53:27,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:53:27,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:53:27,812 INFO L87 Difference]: Start difference. First operand 855 states and 1186 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2023-11-12 00:53:28,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:28,460 INFO L93 Difference]: Finished difference Result 1922 states and 2650 transitions. [2023-11-12 00:53:28,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:53:28,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2023-11-12 00:53:28,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:28,468 INFO L225 Difference]: With dead ends: 1922 [2023-11-12 00:53:28,468 INFO L226 Difference]: Without dead ends: 1068 [2023-11-12 00:53:28,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:53:28,472 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 107 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:28,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 36 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 00:53:28,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2023-11-12 00:53:28,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 855. [2023-11-12 00:53:28,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.3044496487119437) internal successors, (1114), 854 states have internal predecessors, (1114), 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) [2023-11-12 00:53:28,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1114 transitions. [2023-11-12 00:53:28,507 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1114 transitions. Word has length 171 [2023-11-12 00:53:28,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:28,508 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1114 transitions. [2023-11-12 00:53:28,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2023-11-12 00:53:28,509 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1114 transitions. [2023-11-12 00:53:28,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-12 00:53:28,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:28,512 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:53:28,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 00:53:28,513 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:53:28,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:28,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1532628809, now seen corresponding path program 1 times [2023-11-12 00:53:28,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:28,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236761703] [2023-11-12 00:53:28,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:28,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 63 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:29,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:53:29,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236761703] [2023-11-12 00:53:29,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236761703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:53:29,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121966779] [2023-11-12 00:53:29,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:29,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:53:29,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:53:29,312 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:53:29,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:53:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:29,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:53:29,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:53:29,851 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-12 00:53:29,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:53:29,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121966779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:53:29,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:53:29,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-12 00:53:29,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381901743] [2023-11-12 00:53:29,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:53:29,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:53:29,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:53:29,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:53:29,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:53:29,855 INFO L87 Difference]: Start difference. First operand 855 states and 1114 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2023-11-12 00:53:30,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:30,351 INFO L93 Difference]: Finished difference Result 1709 states and 2227 transitions. [2023-11-12 00:53:30,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:53:30,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 175 [2023-11-12 00:53:30,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:30,358 INFO L225 Difference]: With dead ends: 1709 [2023-11-12 00:53:30,359 INFO L226 Difference]: Without dead ends: 855 [2023-11-12 00:53:30,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:53:30,361 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:30,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 108 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:53:30,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-11-12 00:53:30,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2023-11-12 00:53:30,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.2464878671775224) internal successors, (976), 783 states have internal predecessors, (976), 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) [2023-11-12 00:53:30,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 976 transitions. [2023-11-12 00:53:30,394 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 976 transitions. Word has length 175 [2023-11-12 00:53:30,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:30,395 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 976 transitions. [2023-11-12 00:53:30,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2023-11-12 00:53:30,395 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 976 transitions. [2023-11-12 00:53:30,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-11-12 00:53:30,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:30,401 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-12 00:53:30,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:53:30,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 00:53:30,609 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:53:30,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:30,610 INFO L85 PathProgramCache]: Analyzing trace with hash 853603449, now seen corresponding path program 1 times [2023-11-12 00:53:30,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:30,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513855239] [2023-11-12 00:53:30,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:30,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-12 00:53:30,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:53:30,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513855239] [2023-11-12 00:53:30,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513855239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:53:30,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:53:30,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:53:30,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641022029] [2023-11-12 00:53:30,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:53:30,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:53:30,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:53:30,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:53:30,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:53:30,955 INFO L87 Difference]: Start difference. First operand 784 states and 976 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2023-11-12 00:53:31,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:31,395 INFO L93 Difference]: Finished difference Result 1780 states and 2212 transitions. [2023-11-12 00:53:31,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:53:31,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 220 [2023-11-12 00:53:31,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:31,403 INFO L225 Difference]: With dead ends: 1780 [2023-11-12 00:53:31,403 INFO L226 Difference]: Without dead ends: 997 [2023-11-12 00:53:31,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:53:31,405 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 26 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:31,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 126 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:53:31,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-11-12 00:53:31,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2023-11-12 00:53:31,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.2151351351351352) internal successors, (1124), 925 states have internal predecessors, (1124), 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) [2023-11-12 00:53:31,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1124 transitions. [2023-11-12 00:53:31,439 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1124 transitions. Word has length 220 [2023-11-12 00:53:31,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:31,440 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1124 transitions. [2023-11-12 00:53:31,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2023-11-12 00:53:31,441 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1124 transitions. [2023-11-12 00:53:31,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-12 00:53:31,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:31,447 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-12 00:53:31,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 00:53:31,447 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:53:31,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:31,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2121153410, now seen corresponding path program 1 times [2023-11-12 00:53:31,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:31,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014105787] [2023-11-12 00:53:31,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:31,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:32,352 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 82 proven. 261 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-12 00:53:32,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:53:32,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014105787] [2023-11-12 00:53:32,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014105787] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:53:32,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122897884] [2023-11-12 00:53:32,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:32,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:53:32,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:53:32,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:53:32,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:53:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:32,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:53:32,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:53:32,765 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-12 00:53:32,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:53:32,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122897884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:53:32,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:53:32,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-12 00:53:32,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322909334] [2023-11-12 00:53:32,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:53:32,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:53:32,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:53:32,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:53:32,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:53:32,769 INFO L87 Difference]: Start difference. First operand 926 states and 1124 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2023-11-12 00:53:33,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:33,193 INFO L93 Difference]: Finished difference Result 1849 states and 2246 transitions. [2023-11-12 00:53:33,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:53:33,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 242 [2023-11-12 00:53:33,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:33,195 INFO L225 Difference]: With dead ends: 1849 [2023-11-12 00:53:33,195 INFO L226 Difference]: Without dead ends: 0 [2023-11-12 00:53:33,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:53:33,200 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 7 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:33,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 123 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:53:33,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-12 00:53:33,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-12 00:53:33,201 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) [2023-11-12 00:53:33,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-12 00:53:33,202 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 242 [2023-11-12 00:53:33,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:33,202 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 00:53:33,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2023-11-12 00:53:33,203 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-12 00:53:33,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-12 00:53:33,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:53:33,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:53:33,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-12 00:53:33,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-12 00:53:33,704 INFO L899 garLoopResultBuilder]: For program point L531(line 531) no Hoare annotation was computed. [2023-11-12 00:53:33,705 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2023-11-12 00:53:33,705 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2023-11-12 00:53:33,705 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2023-11-12 00:53:33,706 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2023-11-12 00:53:33,706 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2023-11-12 00:53:33,706 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2023-11-12 00:53:33,706 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2023-11-12 00:53:33,706 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2023-11-12 00:53:33,707 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2023-11-12 00:53:33,707 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2023-11-12 00:53:33,707 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2023-11-12 00:53:33,707 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2023-11-12 00:53:33,707 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2023-11-12 00:53:33,708 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2023-11-12 00:53:33,708 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2023-11-12 00:53:33,708 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2023-11-12 00:53:33,708 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2023-11-12 00:53:33,708 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2023-11-12 00:53:33,709 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2023-11-12 00:53:33,709 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2023-11-12 00:53:33,709 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2023-11-12 00:53:33,709 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2023-11-12 00:53:33,709 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2023-11-12 00:53:33,710 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2023-11-12 00:53:33,711 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2023-11-12 00:53:33,711 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2023-11-12 00:53:33,711 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2023-11-12 00:53:33,711 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2023-11-12 00:53:33,711 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2023-11-12 00:53:33,711 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2023-11-12 00:53:33,711 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2023-11-12 00:53:33,711 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2023-11-12 00:53:33,712 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2023-11-12 00:53:33,712 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2023-11-12 00:53:33,712 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2023-11-12 00:53:33,712 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2023-11-12 00:53:33,712 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2023-11-12 00:53:33,712 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2023-11-12 00:53:33,712 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2023-11-12 00:53:33,712 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2023-11-12 00:53:33,713 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2023-11-12 00:53:33,713 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2023-11-12 00:53:33,713 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2023-11-12 00:53:33,713 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2023-11-12 00:53:33,713 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2023-11-12 00:53:33,713 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2023-11-12 00:53:33,713 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-12 00:53:33,713 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2023-11-12 00:53:33,714 INFO L899 garLoopResultBuilder]: For program point L587(lines 587 604) no Hoare annotation was computed. [2023-11-12 00:53:33,714 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2023-11-12 00:53:33,714 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2023-11-12 00:53:33,714 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2023-11-12 00:53:33,714 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2023-11-12 00:53:33,714 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2023-11-12 00:53:33,714 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2023-11-12 00:53:33,714 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2023-11-12 00:53:33,714 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-12 00:53:33,715 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2023-11-12 00:53:33,715 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2023-11-12 00:53:33,715 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2023-11-12 00:53:33,715 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2023-11-12 00:53:33,715 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2023-11-12 00:53:33,715 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2023-11-12 00:53:33,716 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse5 (<= ~a21~0 0)) (.cse2 (= ~a17~0 1)) (.cse0 (= ~a16~0 6)) (.cse3 (<= 15 ~a8~0)) (.cse7 (<= ~a16~0 5)) (.cse6 (<= ~a17~0 0)) (.cse1 (= ~a21~0 1)) (.cse4 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse1 .cse2 .cse4) (and .cse5 .cse6 .cse4) (and .cse1 .cse2 .cse7 .cse3) (and .cse5 .cse2 .cse7) (and .cse0 .cse6 .cse1 .cse3) (and .cse6 .cse1 .cse7) (and .cse6 .cse1 .cse4))) [2023-11-12 00:53:33,716 INFO L899 garLoopResultBuilder]: For program point L527-1(lines 40 585) no Hoare annotation was computed. [2023-11-12 00:53:33,716 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2023-11-12 00:53:33,716 INFO L899 garLoopResultBuilder]: For program point calculate_output_returnLabel#1(lines 40 585) no Hoare annotation was computed. [2023-11-12 00:53:33,717 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 531) no Hoare annotation was computed. [2023-11-12 00:53:33,717 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2023-11-12 00:53:33,717 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2023-11-12 00:53:33,717 INFO L899 garLoopResultBuilder]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2023-11-12 00:53:33,717 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2023-11-12 00:53:33,717 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2023-11-12 00:53:33,717 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2023-11-12 00:53:33,718 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2023-11-12 00:53:33,721 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:53:33,724 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:53:33,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:53:33 BoogieIcfgContainer [2023-11-12 00:53:33,747 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:53:33,748 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:53:33,748 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:53:33,748 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:53:33,749 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:53:20" (3/4) ... [2023-11-12 00:53:33,752 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 00:53:33,782 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2023-11-12 00:53:33,784 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-12 00:53:33,786 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-12 00:53:33,788 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 00:53:34,032 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:53:34,033 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/witness.yml [2023-11-12 00:53:34,033 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:53:34,034 INFO L158 Benchmark]: Toolchain (without parser) took 16700.93ms. Allocated memory was 169.9MB in the beginning and 297.8MB in the end (delta: 127.9MB). Free memory was 140.9MB in the beginning and 93.2MB in the end (delta: 47.7MB). Peak memory consumption was 174.3MB. Max. memory is 16.1GB. [2023-11-12 00:53:34,034 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 121.6MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:53:34,035 INFO L158 Benchmark]: CACSL2BoogieTranslator took 753.03ms. Allocated memory is still 169.9MB. Free memory was 140.9MB in the beginning and 112.8MB in the end (delta: 28.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-12 00:53:34,035 INFO L158 Benchmark]: Boogie Procedure Inliner took 114.74ms. Allocated memory is still 169.9MB. Free memory was 112.8MB in the beginning and 107.3MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 00:53:34,036 INFO L158 Benchmark]: Boogie Preprocessor took 88.50ms. Allocated memory is still 169.9MB. Free memory was 107.3MB in the beginning and 102.3MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 00:53:34,037 INFO L158 Benchmark]: RCFGBuilder took 1947.03ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 102.3MB in the beginning and 120.5MB in the end (delta: -18.2MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. [2023-11-12 00:53:34,037 INFO L158 Benchmark]: TraceAbstraction took 13502.07ms. Allocated memory was 205.5MB in the beginning and 297.8MB in the end (delta: 92.3MB). Free memory was 119.4MB in the beginning and 105.8MB in the end (delta: 13.7MB). Peak memory consumption was 104.9MB. Max. memory is 16.1GB. [2023-11-12 00:53:34,039 INFO L158 Benchmark]: Witness Printer took 285.11ms. Allocated memory is still 297.8MB. Free memory was 105.8MB in the beginning and 93.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 00:53:34,042 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 121.6MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 753.03ms. Allocated memory is still 169.9MB. Free memory was 140.9MB in the beginning and 112.8MB in the end (delta: 28.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 114.74ms. Allocated memory is still 169.9MB. Free memory was 112.8MB in the beginning and 107.3MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 88.50ms. Allocated memory is still 169.9MB. Free memory was 107.3MB in the beginning and 102.3MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1947.03ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 102.3MB in the beginning and 120.5MB in the end (delta: -18.2MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. * TraceAbstraction took 13502.07ms. Allocated memory was 205.5MB in the beginning and 297.8MB in the end (delta: 92.3MB). Free memory was 119.4MB in the beginning and 105.8MB in the end (delta: 13.7MB). Peak memory consumption was 104.9MB. Max. memory is 16.1GB. * Witness Printer took 285.11ms. Allocated memory is still 297.8MB. Free memory was 105.8MB in the beginning and 93.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 531]: 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: 13.4s, OverallIterations: 12, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 668 SdHoareTripleChecker+Valid, 5.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 668 mSDsluCounter, 720 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 764 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2893 IncrementalHoareTripleChecker+Invalid, 3657 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 764 mSolverCounterUnsat, 671 mSDtfsCounter, 2893 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 451 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=926occurred in iteration=11, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 710 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 14 NumberOfFragments, 90 HoareAnnotationTreeSize, 1 FomulaSimplifications, 776 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 1 FomulaSimplificationsInter, 164 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 2112 NumberOfCodeBlocks, 2112 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2098 ConstructedInterpolants, 0 QuantifiedInterpolants, 8271 SizeOfPredicates, 0 NumberOfNonLiveVariables, 868 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 1692/2045 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: (((((((((((a16 == 6) && (a21 == 1)) && (a17 == 1)) && (15 <= a8)) || (((a21 == 1) && (a17 == 1)) && (a20 == 1))) || (((a21 <= 0) && (a17 <= 0)) && (a20 == 1))) || ((((a21 == 1) && (a17 == 1)) && (a16 <= 5)) && (15 <= a8))) || (((a21 <= 0) && (a17 == 1)) && (a16 <= 5))) || ((((a16 == 6) && (a17 <= 0)) && (a21 == 1)) && (15 <= a8))) || (((a17 <= 0) && (a21 == 1)) && (a16 <= 5))) || (((a17 <= 0) && (a21 == 1)) && (a20 == 1))) RESULT: Ultimate proved your program to be correct! [2023-11-12 00:53:34,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cc74abb-5ae5-4ef4-8962-2114c1f289b7/bin/utaipan-verify-NcY6lQBIFX/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