./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem11_label25.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem11_label25.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a498dbc067f1de398639e507498752ad05d79db17a274a9c2dbfecc9e6d20a0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:40:05,091 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:40:05,155 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:40:05,159 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:40:05,160 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:40:05,181 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:40:05,182 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:40:05,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:40:05,183 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:40:05,184 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:40:05,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:40:05,185 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:40:05,186 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:40:05,186 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:40:05,187 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:40:05,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:40:05,188 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:40:05,188 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:40:05,189 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:40:05,189 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:40:05,190 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:40:05,190 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:40:05,191 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:40:05,191 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:40:05,192 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:40:05,192 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:40:05,193 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:40:05,193 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:40:05,194 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:40:05,194 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:40:05,195 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:40:05,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:40:05,195 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:40:05,195 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:40:05,196 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:40:05,196 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:40:05,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:40:05,196 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:40:05,196 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:40:05,197 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:40:05,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:40:05,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:40:05,197 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a498dbc067f1de398639e507498752ad05d79db17a274a9c2dbfecc9e6d20a0 [2023-11-29 03:40:05,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:40:05,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:40:05,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:40:05,430 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:40:05,430 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:40:05,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/eca-rers2012/Problem11_label25.c [2023-11-29 03:40:08,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:40:08,461 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:40:08,462 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/sv-benchmarks/c/eca-rers2012/Problem11_label25.c [2023-11-29 03:40:08,477 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/data/90773c3d6/3f9dd730ea1648039ed7ae125495312f/FLAGa49eae275 [2023-11-29 03:40:08,491 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/data/90773c3d6/3f9dd730ea1648039ed7ae125495312f [2023-11-29 03:40:08,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:40:08,495 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:40:08,496 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:40:08,496 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:40:08,501 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:40:08,502 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:40:08" (1/1) ... [2023-11-29 03:40:08,503 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a40aff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:08, skipping insertion in model container [2023-11-29 03:40:08,503 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:40:08" (1/1) ... [2023-11-29 03:40:08,559 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:40:08,752 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_09351ebe-9de6-4890-8336-8273241676b7/sv-benchmarks/c/eca-rers2012/Problem11_label25.c[4556,4569] [2023-11-29 03:40:08,975 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:40:08,987 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:40:09,011 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_09351ebe-9de6-4890-8336-8273241676b7/sv-benchmarks/c/eca-rers2012/Problem11_label25.c[4556,4569] [2023-11-29 03:40:09,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:40:09,165 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:40:09,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:09 WrapperNode [2023-11-29 03:40:09,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:40:09,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:40:09,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:40:09,167 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:40:09,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:09" (1/1) ... [2023-11-29 03:40:09,216 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:09" (1/1) ... [2023-11-29 03:40:09,281 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2023-11-29 03:40:09,282 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:40:09,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:40:09,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:40:09,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:40:09,291 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:09" (1/1) ... [2023-11-29 03:40:09,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:09" (1/1) ... [2023-11-29 03:40:09,300 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:09" (1/1) ... [2023-11-29 03:40:09,336 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 03:40:09,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:09" (1/1) ... [2023-11-29 03:40:09,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:09" (1/1) ... [2023-11-29 03:40:09,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:09" (1/1) ... [2023-11-29 03:40:09,378 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:09" (1/1) ... [2023-11-29 03:40:09,396 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:09" (1/1) ... [2023-11-29 03:40:09,401 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:09" (1/1) ... [2023-11-29 03:40:09,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:40:09,420 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:40:09,420 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:40:09,420 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:40:09,420 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:09" (1/1) ... [2023-11-29 03:40:09,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:40:09,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:40:09,443 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:40:09,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:40:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:40:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:40:09,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:40:09,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:40:09,542 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:40:09,545 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:40:11,067 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:40:11,118 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:40:11,119 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 03:40:11,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:40:11 BoogieIcfgContainer [2023-11-29 03:40:11,119 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:40:11,122 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:40:11,122 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:40:11,125 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:40:11,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:40:08" (1/3) ... [2023-11-29 03:40:11,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23cf4706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:40:11, skipping insertion in model container [2023-11-29 03:40:11,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:40:09" (2/3) ... [2023-11-29 03:40:11,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23cf4706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:40:11, skipping insertion in model container [2023-11-29 03:40:11,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:40:11" (3/3) ... [2023-11-29 03:40:11,128 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label25.c [2023-11-29 03:40:11,165 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:40:11,165 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:40:11,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:40:11,227 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=PETRI_NET, 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;@7996b921, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:40:11,228 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:40:11,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 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) [2023-11-29 03:40:11,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 03:40:11,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:11,240 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] [2023-11-29 03:40:11,241 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:11,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:11,247 INFO L85 PathProgramCache]: Analyzing trace with hash 936061325, now seen corresponding path program 1 times [2023-11-29 03:40:11,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:11,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3704855] [2023-11-29 03:40:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:11,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:11,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:40:11,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:11,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3704855] [2023-11-29 03:40:11,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3704855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:11,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:11,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:40:11,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156220006] [2023-11-29 03:40:11,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:11,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:40:11,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:11,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:40:11,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:40:11,452 INFO L87 Difference]: Start difference. First operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 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 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2023-11-29 03:40:11,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:11,497 INFO L93 Difference]: Finished difference Result 441 states and 839 transitions. [2023-11-29 03:40:11,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:40:11,500 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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 30 [2023-11-29 03:40:11,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:11,512 INFO L225 Difference]: With dead ends: 441 [2023-11-29 03:40:11,512 INFO L226 Difference]: Without dead ends: 219 [2023-11-29 03:40:11,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:40:11,519 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:11,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:40:11,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-29 03:40:11,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2023-11-29 03:40:11,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.628440366972477) internal successors, (355), 218 states have internal predecessors, (355), 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) [2023-11-29 03:40:11,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 355 transitions. [2023-11-29 03:40:11,570 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 355 transitions. Word has length 30 [2023-11-29 03:40:11,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:11,570 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 355 transitions. [2023-11-29 03:40:11,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2023-11-29 03:40:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 355 transitions. [2023-11-29 03:40:11,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 03:40:11,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:11,572 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] [2023-11-29 03:40:11,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:40:11,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:11,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:11,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1800183855, now seen corresponding path program 1 times [2023-11-29 03:40:11,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:11,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025126706] [2023-11-29 03:40:11,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:11,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:40:11,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:11,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025126706] [2023-11-29 03:40:11,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025126706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:11,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:11,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:40:11,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610759677] [2023-11-29 03:40:11,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:11,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:40:11,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:11,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:40:11,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:40:11,708 INFO L87 Difference]: Start difference. First operand 219 states and 355 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2023-11-29 03:40:12,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:12,743 INFO L93 Difference]: Finished difference Result 630 states and 1026 transitions. [2023-11-29 03:40:12,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:40:12,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 30 [2023-11-29 03:40:12,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:12,749 INFO L225 Difference]: With dead ends: 630 [2023-11-29 03:40:12,749 INFO L226 Difference]: Without dead ends: 412 [2023-11-29 03:40:12,751 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 [2023-11-29 03:40:12,752 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 193 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:12,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 155 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 03:40:12,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2023-11-29 03:40:12,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2023-11-29 03:40:12,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.4549878345498783) internal successors, (598), 411 states have internal predecessors, (598), 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) [2023-11-29 03:40:12,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 598 transitions. [2023-11-29 03:40:12,794 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 598 transitions. Word has length 30 [2023-11-29 03:40:12,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:12,795 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 598 transitions. [2023-11-29 03:40:12,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2023-11-29 03:40:12,795 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 598 transitions. [2023-11-29 03:40:12,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 03:40:12,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:12,799 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:12,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:40:12,800 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:12,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:12,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1476818538, now seen corresponding path program 1 times [2023-11-29 03:40:12,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:12,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643371170] [2023-11-29 03:40:12,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:12,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:12,990 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:40:12,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:12,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643371170] [2023-11-29 03:40:12,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643371170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:12,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:12,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:40:12,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251766454] [2023-11-29 03:40:12,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:12,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:40:12,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:12,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:40:12,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:40:12,993 INFO L87 Difference]: Start difference. First operand 412 states and 598 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2023-11-29 03:40:13,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:13,800 INFO L93 Difference]: Finished difference Result 1210 states and 1762 transitions. [2023-11-29 03:40:13,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:40:13,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 98 [2023-11-29 03:40:13,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:13,806 INFO L225 Difference]: With dead ends: 1210 [2023-11-29 03:40:13,806 INFO L226 Difference]: Without dead ends: 799 [2023-11-29 03:40:13,808 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 [2023-11-29 03:40:13,809 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 144 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:13,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 116 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 03:40:13,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-11-29 03:40:13,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 788. [2023-11-29 03:40:13,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 1.3761118170266835) internal successors, (1083), 787 states have internal predecessors, (1083), 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) [2023-11-29 03:40:13,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1083 transitions. [2023-11-29 03:40:13,848 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1083 transitions. Word has length 98 [2023-11-29 03:40:13,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:13,849 INFO L495 AbstractCegarLoop]: Abstraction has 788 states and 1083 transitions. [2023-11-29 03:40:13,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2023-11-29 03:40:13,849 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1083 transitions. [2023-11-29 03:40:13,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 03:40:13,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:13,851 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:13,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:40:13,852 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:13,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:13,852 INFO L85 PathProgramCache]: Analyzing trace with hash 741985082, now seen corresponding path program 1 times [2023-11-29 03:40:13,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:13,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765176750] [2023-11-29 03:40:13,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:13,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:14,100 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:40:14,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:14,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765176750] [2023-11-29 03:40:14,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765176750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:14,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:14,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:40:14,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850944034] [2023-11-29 03:40:14,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:14,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:40:14,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:14,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:40:14,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:40:14,103 INFO L87 Difference]: Start difference. First operand 788 states and 1083 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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) [2023-11-29 03:40:14,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:14,903 INFO L93 Difference]: Finished difference Result 1944 states and 2613 transitions. [2023-11-29 03:40:14,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:40:14,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 99 [2023-11-29 03:40:14,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:14,910 INFO L225 Difference]: With dead ends: 1944 [2023-11-29 03:40:14,910 INFO L226 Difference]: Without dead ends: 1157 [2023-11-29 03:40:14,911 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 [2023-11-29 03:40:14,912 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 120 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:14,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 188 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 03:40:14,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2023-11-29 03:40:14,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1156. [2023-11-29 03:40:14,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 1.2718614718614718) internal successors, (1469), 1155 states have internal predecessors, (1469), 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) [2023-11-29 03:40:14,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1469 transitions. [2023-11-29 03:40:14,935 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1469 transitions. Word has length 99 [2023-11-29 03:40:14,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:14,936 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1469 transitions. [2023-11-29 03:40:14,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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) [2023-11-29 03:40:14,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1469 transitions. [2023-11-29 03:40:14,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-29 03:40:14,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:14,940 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:14,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:40:14,941 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:14,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:14,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1510404607, now seen corresponding path program 1 times [2023-11-29 03:40:14,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:14,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294412649] [2023-11-29 03:40:14,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:14,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:40:15,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:15,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294412649] [2023-11-29 03:40:15,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294412649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:15,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:15,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:40:15,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403450616] [2023-11-29 03:40:15,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:15,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:40:15,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:15,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:40:15,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:40:15,171 INFO L87 Difference]: Start difference. First operand 1156 states and 1469 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 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) [2023-11-29 03:40:16,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:16,663 INFO L93 Difference]: Finished difference Result 3444 states and 4567 transitions. [2023-11-29 03:40:16,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:40:16,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 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 157 [2023-11-29 03:40:16,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:16,677 INFO L225 Difference]: With dead ends: 3444 [2023-11-29 03:40:16,677 INFO L226 Difference]: Without dead ends: 2473 [2023-11-29 03:40:16,679 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 [2023-11-29 03:40:16,680 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 363 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:16,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 84 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 03:40:16,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2023-11-29 03:40:16,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2472. [2023-11-29 03:40:16,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 2471 states have (on average 1.2877377579927154) internal successors, (3182), 2471 states have internal predecessors, (3182), 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) [2023-11-29 03:40:16,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 3182 transitions. [2023-11-29 03:40:16,740 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 3182 transitions. Word has length 157 [2023-11-29 03:40:16,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:16,741 INFO L495 AbstractCegarLoop]: Abstraction has 2472 states and 3182 transitions. [2023-11-29 03:40:16,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 3 states have internal predecessors, (157), 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) [2023-11-29 03:40:16,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 3182 transitions. [2023-11-29 03:40:16,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 03:40:16,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:16,747 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:16,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:40:16,747 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:16,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:16,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1351486791, now seen corresponding path program 1 times [2023-11-29 03:40:16,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:16,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481918666] [2023-11-29 03:40:16,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:16,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:40:16,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:16,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481918666] [2023-11-29 03:40:16,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481918666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:17,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:17,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:40:17,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457030342] [2023-11-29 03:40:17,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:17,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:40:17,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:17,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:40:17,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:40:17,002 INFO L87 Difference]: Start difference. First operand 2472 states and 3182 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2023-11-29 03:40:17,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:17,826 INFO L93 Difference]: Finished difference Result 5694 states and 7519 transitions. [2023-11-29 03:40:17,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:40:17,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 210 [2023-11-29 03:40:17,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:17,841 INFO L225 Difference]: With dead ends: 5694 [2023-11-29 03:40:17,842 INFO L226 Difference]: Without dead ends: 3591 [2023-11-29 03:40:17,845 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 [2023-11-29 03:40:17,846 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 136 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:17,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 344 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 03:40:17,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3591 states. [2023-11-29 03:40:17,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3591 to 3578. [2023-11-29 03:40:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3578 states, 3577 states have (on average 1.2524461839530332) internal successors, (4480), 3577 states have internal predecessors, (4480), 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) [2023-11-29 03:40:17,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 4480 transitions. [2023-11-29 03:40:17,928 INFO L78 Accepts]: Start accepts. Automaton has 3578 states and 4480 transitions. Word has length 210 [2023-11-29 03:40:17,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:17,929 INFO L495 AbstractCegarLoop]: Abstraction has 3578 states and 4480 transitions. [2023-11-29 03:40:17,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2023-11-29 03:40:17,929 INFO L276 IsEmpty]: Start isEmpty. Operand 3578 states and 4480 transitions. [2023-11-29 03:40:17,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-29 03:40:17,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:17,933 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:17,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 03:40:17,934 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:17,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:17,934 INFO L85 PathProgramCache]: Analyzing trace with hash 332301943, now seen corresponding path program 1 times [2023-11-29 03:40:17,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:17,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252755811] [2023-11-29 03:40:17,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:17,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:18,109 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-29 03:40:18,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:18,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252755811] [2023-11-29 03:40:18,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252755811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:18,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:18,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:40:18,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225358144] [2023-11-29 03:40:18,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:18,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:40:18,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:18,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:40:18,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:40:18,112 INFO L87 Difference]: Start difference. First operand 3578 states and 4480 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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) [2023-11-29 03:40:18,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:18,876 INFO L93 Difference]: Finished difference Result 7725 states and 9780 transitions. [2023-11-29 03:40:18,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:40:18,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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) Word has length 211 [2023-11-29 03:40:18,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:18,898 INFO L225 Difference]: With dead ends: 7725 [2023-11-29 03:40:18,898 INFO L226 Difference]: Without dead ends: 4516 [2023-11-29 03:40:18,902 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 [2023-11-29 03:40:18,903 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 171 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:18,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 343 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:40:18,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4516 states. [2023-11-29 03:40:18,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4516 to 4498. [2023-11-29 03:40:18,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4498 states, 4497 states have (on average 1.2408272181454303) internal successors, (5580), 4497 states have internal predecessors, (5580), 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) [2023-11-29 03:40:19,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 5580 transitions. [2023-11-29 03:40:19,000 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 5580 transitions. Word has length 211 [2023-11-29 03:40:19,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:19,001 INFO L495 AbstractCegarLoop]: Abstraction has 4498 states and 5580 transitions. [2023-11-29 03:40:19,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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) [2023-11-29 03:40:19,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 5580 transitions. [2023-11-29 03:40:19,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-29 03:40:19,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:19,005 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:19,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:40:19,006 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:19,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:19,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1550822466, now seen corresponding path program 1 times [2023-11-29 03:40:19,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:19,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822170954] [2023-11-29 03:40:19,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:19,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:19,276 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-29 03:40:19,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:19,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822170954] [2023-11-29 03:40:19,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822170954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:19,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:19,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:40:19,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793038338] [2023-11-29 03:40:19,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:19,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:40:19,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:19,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:40:19,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:40:19,278 INFO L87 Difference]: Start difference. First operand 4498 states and 5580 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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) [2023-11-29 03:40:20,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:20,116 INFO L93 Difference]: Finished difference Result 9740 states and 12304 transitions. [2023-11-29 03:40:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:40:20,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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) Word has length 212 [2023-11-29 03:40:20,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:20,142 INFO L225 Difference]: With dead ends: 9740 [2023-11-29 03:40:20,142 INFO L226 Difference]: Without dead ends: 5611 [2023-11-29 03:40:20,146 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 [2023-11-29 03:40:20,147 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 166 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:20,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 368 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 03:40:20,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5611 states. [2023-11-29 03:40:20,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5611 to 5418. [2023-11-29 03:40:20,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5417 states have (on average 1.2331548827764445) internal successors, (6680), 5417 states have internal predecessors, (6680), 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) [2023-11-29 03:40:20,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 6680 transitions. [2023-11-29 03:40:20,263 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 6680 transitions. Word has length 212 [2023-11-29 03:40:20,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:20,264 INFO L495 AbstractCegarLoop]: Abstraction has 5418 states and 6680 transitions. [2023-11-29 03:40:20,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 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) [2023-11-29 03:40:20,264 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 6680 transitions. [2023-11-29 03:40:20,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-11-29 03:40:20,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:20,269 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:20,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 03:40:20,269 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:20,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:20,270 INFO L85 PathProgramCache]: Analyzing trace with hash -533407248, now seen corresponding path program 1 times [2023-11-29 03:40:20,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:20,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737452813] [2023-11-29 03:40:20,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:20,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:20,782 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:40:20,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:20,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737452813] [2023-11-29 03:40:20,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737452813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:20,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:20,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:40:20,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384419296] [2023-11-29 03:40:20,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:20,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:40:20,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:20,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:40:20,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:40:20,785 INFO L87 Difference]: Start difference. First operand 5418 states and 6680 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2023-11-29 03:40:22,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:22,094 INFO L93 Difference]: Finished difference Result 16398 states and 20712 transitions. [2023-11-29 03:40:22,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:40:22,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 232 [2023-11-29 03:40:22,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:22,140 INFO L225 Difference]: With dead ends: 16398 [2023-11-29 03:40:22,140 INFO L226 Difference]: Without dead ends: 11349 [2023-11-29 03:40:22,146 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 [2023-11-29 03:40:22,146 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 305 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:22,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 191 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:40:22,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11349 states. [2023-11-29 03:40:22,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11349 to 11343. [2023-11-29 03:40:22,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11343 states, 11342 states have (on average 1.206048315993652) internal successors, (13679), 11342 states have internal predecessors, (13679), 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) [2023-11-29 03:40:22,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11343 states to 11343 states and 13679 transitions. [2023-11-29 03:40:22,361 INFO L78 Accepts]: Start accepts. Automaton has 11343 states and 13679 transitions. Word has length 232 [2023-11-29 03:40:22,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:22,362 INFO L495 AbstractCegarLoop]: Abstraction has 11343 states and 13679 transitions. [2023-11-29 03:40:22,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2023-11-29 03:40:22,362 INFO L276 IsEmpty]: Start isEmpty. Operand 11343 states and 13679 transitions. [2023-11-29 03:40:22,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-11-29 03:40:22,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:22,367 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:22,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 03:40:22,368 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:22,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:22,368 INFO L85 PathProgramCache]: Analyzing trace with hash -851626696, now seen corresponding path program 1 times [2023-11-29 03:40:22,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:22,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849594478] [2023-11-29 03:40:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:22,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:22,525 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 03:40:22,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:22,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849594478] [2023-11-29 03:40:22,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849594478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:22,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:22,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:40:22,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926720477] [2023-11-29 03:40:22,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:22,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:40:22,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:22,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:40:22,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:40:22,527 INFO L87 Difference]: Start difference. First operand 11343 states and 13679 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 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) [2023-11-29 03:40:23,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:23,334 INFO L93 Difference]: Finished difference Result 25074 states and 30488 transitions. [2023-11-29 03:40:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:40:23,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 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 233 [2023-11-29 03:40:23,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:23,354 INFO L225 Difference]: With dead ends: 25074 [2023-11-29 03:40:23,354 INFO L226 Difference]: Without dead ends: 14100 [2023-11-29 03:40:23,361 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 [2023-11-29 03:40:23,361 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 115 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:23,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 151 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:40:23,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14100 states. [2023-11-29 03:40:23,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14100 to 13546. [2023-11-29 03:40:23,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13546 states, 13545 states have (on average 1.1601328903654484) internal successors, (15714), 13545 states have internal predecessors, (15714), 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) [2023-11-29 03:40:23,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13546 states to 13546 states and 15714 transitions. [2023-11-29 03:40:23,521 INFO L78 Accepts]: Start accepts. Automaton has 13546 states and 15714 transitions. Word has length 233 [2023-11-29 03:40:23,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:23,521 INFO L495 AbstractCegarLoop]: Abstraction has 13546 states and 15714 transitions. [2023-11-29 03:40:23,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 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) [2023-11-29 03:40:23,522 INFO L276 IsEmpty]: Start isEmpty. Operand 13546 states and 15714 transitions. [2023-11-29 03:40:23,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-29 03:40:23,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:23,525 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:23,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 03:40:23,525 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:23,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:23,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1626578551, now seen corresponding path program 1 times [2023-11-29 03:40:23,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:23,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297264289] [2023-11-29 03:40:23,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:23,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:23,904 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:40:23,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:23,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297264289] [2023-11-29 03:40:23,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297264289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:23,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:23,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:40:23,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054289133] [2023-11-29 03:40:23,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:23,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:40:23,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:23,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:40:23,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:40:23,907 INFO L87 Difference]: Start difference. First operand 13546 states and 15714 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 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) [2023-11-29 03:40:25,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:25,311 INFO L93 Difference]: Finished difference Result 32622 states and 38077 transitions. [2023-11-29 03:40:25,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:40:25,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 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 [2023-11-29 03:40:25,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:25,334 INFO L225 Difference]: With dead ends: 32622 [2023-11-29 03:40:25,335 INFO L226 Difference]: Without dead ends: 19445 [2023-11-29 03:40:25,347 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 [2023-11-29 03:40:25,348 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 332 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:25,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 102 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 03:40:25,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19445 states. [2023-11-29 03:40:25,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19445 to 17961. [2023-11-29 03:40:25,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17961 states, 17960 states have (on average 1.158129175946548) internal successors, (20800), 17960 states have internal predecessors, (20800), 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) [2023-11-29 03:40:25,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17961 states to 17961 states and 20800 transitions. [2023-11-29 03:40:25,661 INFO L78 Accepts]: Start accepts. Automaton has 17961 states and 20800 transitions. Word has length 242 [2023-11-29 03:40:25,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:25,662 INFO L495 AbstractCegarLoop]: Abstraction has 17961 states and 20800 transitions. [2023-11-29 03:40:25,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 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) [2023-11-29 03:40:25,662 INFO L276 IsEmpty]: Start isEmpty. Operand 17961 states and 20800 transitions. [2023-11-29 03:40:25,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-11-29 03:40:25,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:25,668 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 03:40:25,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 03:40:25,669 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:25,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:25,669 INFO L85 PathProgramCache]: Analyzing trace with hash -534193244, now seen corresponding path program 1 times [2023-11-29 03:40:25,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:25,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262322400] [2023-11-29 03:40:25,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:25,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-29 03:40:25,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:25,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262322400] [2023-11-29 03:40:25,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262322400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:25,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:25,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:40:25,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335567368] [2023-11-29 03:40:25,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:25,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:40:25,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:25,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:40:25,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:40:25,948 INFO L87 Difference]: Start difference. First operand 17961 states and 20800 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-11-29 03:40:26,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:26,819 INFO L93 Difference]: Finished difference Result 35184 states and 40784 transitions. [2023-11-29 03:40:26,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:40:26,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 249 [2023-11-29 03:40:26,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:26,845 INFO L225 Difference]: With dead ends: 35184 [2023-11-29 03:40:26,845 INFO L226 Difference]: Without dead ends: 17408 [2023-11-29 03:40:26,858 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 [2023-11-29 03:40:26,858 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 170 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:26,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 375 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 03:40:26,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17408 states. [2023-11-29 03:40:27,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17408 to 17216. [2023-11-29 03:40:27,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17216 states, 17215 states have (on average 1.1367993029334882) internal successors, (19570), 17215 states have internal predecessors, (19570), 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) [2023-11-29 03:40:27,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17216 states to 17216 states and 19570 transitions. [2023-11-29 03:40:27,067 INFO L78 Accepts]: Start accepts. Automaton has 17216 states and 19570 transitions. Word has length 249 [2023-11-29 03:40:27,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:27,067 INFO L495 AbstractCegarLoop]: Abstraction has 17216 states and 19570 transitions. [2023-11-29 03:40:27,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-11-29 03:40:27,067 INFO L276 IsEmpty]: Start isEmpty. Operand 17216 states and 19570 transitions. [2023-11-29 03:40:27,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-11-29 03:40:27,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:27,072 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:27,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 03:40:27,073 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:27,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:27,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1630613573, now seen corresponding path program 1 times [2023-11-29 03:40:27,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:27,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042131293] [2023-11-29 03:40:27,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:27,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 113 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:40:27,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:27,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042131293] [2023-11-29 03:40:27,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042131293] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:40:27,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301345150] [2023-11-29 03:40:27,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:27,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:27,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:40:27,613 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:40:27,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:40:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:27,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:40:27,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:40:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:40:28,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:40:28,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301345150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:28,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:40:28,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 03:40:28,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298563265] [2023-11-29 03:40:28,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:28,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:40:28,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:28,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:40:28,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:40:28,279 INFO L87 Difference]: Start difference. First operand 17216 states and 19570 transitions. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 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) [2023-11-29 03:40:29,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:29,275 INFO L93 Difference]: Finished difference Result 32041 states and 36492 transitions. [2023-11-29 03:40:29,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:40:29,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 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 263 [2023-11-29 03:40:29,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:29,295 INFO L225 Difference]: With dead ends: 32041 [2023-11-29 03:40:29,295 INFO L226 Difference]: Without dead ends: 17222 [2023-11-29 03:40:29,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:40:29,306 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 188 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:29,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 160 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 03:40:29,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17222 states. [2023-11-29 03:40:29,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17222 to 17216. [2023-11-29 03:40:29,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17216 states, 17215 states have (on average 1.1354051699099623) internal successors, (19546), 17215 states have internal predecessors, (19546), 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) [2023-11-29 03:40:29,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17216 states to 17216 states and 19546 transitions. [2023-11-29 03:40:29,483 INFO L78 Accepts]: Start accepts. Automaton has 17216 states and 19546 transitions. Word has length 263 [2023-11-29 03:40:29,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:29,484 INFO L495 AbstractCegarLoop]: Abstraction has 17216 states and 19546 transitions. [2023-11-29 03:40:29,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 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) [2023-11-29 03:40:29,484 INFO L276 IsEmpty]: Start isEmpty. Operand 17216 states and 19546 transitions. [2023-11-29 03:40:29,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-11-29 03:40:29,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:29,490 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2023-11-29 03:40:29,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:40:29,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 03:40:29,691 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:29,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:29,691 INFO L85 PathProgramCache]: Analyzing trace with hash 827517491, now seen corresponding path program 1 times [2023-11-29 03:40:29,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:29,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138670060] [2023-11-29 03:40:29,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:29,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:29,860 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-11-29 03:40:29,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:29,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138670060] [2023-11-29 03:40:29,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138670060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:29,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:29,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:40:29,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450764929] [2023-11-29 03:40:29,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:29,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:40:29,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:29,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:40:29,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:40:29,863 INFO L87 Difference]: Start difference. First operand 17216 states and 19546 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2023-11-29 03:40:30,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:30,616 INFO L93 Difference]: Finished difference Result 35898 states and 40778 transitions. [2023-11-29 03:40:30,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:40:30,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 297 [2023-11-29 03:40:30,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:30,639 INFO L225 Difference]: With dead ends: 35898 [2023-11-29 03:40:30,639 INFO L226 Difference]: Without dead ends: 21079 [2023-11-29 03:40:30,650 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 [2023-11-29 03:40:30,650 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 190 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:30,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 149 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:40:30,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21079 states. [2023-11-29 03:40:30,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21079 to 18135. [2023-11-29 03:40:30,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18135 states, 18134 states have (on average 1.1355464872614978) internal successors, (20592), 18134 states have internal predecessors, (20592), 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) [2023-11-29 03:40:30,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18135 states to 18135 states and 20592 transitions. [2023-11-29 03:40:30,872 INFO L78 Accepts]: Start accepts. Automaton has 18135 states and 20592 transitions. Word has length 297 [2023-11-29 03:40:30,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:30,873 INFO L495 AbstractCegarLoop]: Abstraction has 18135 states and 20592 transitions. [2023-11-29 03:40:30,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2023-11-29 03:40:30,873 INFO L276 IsEmpty]: Start isEmpty. Operand 18135 states and 20592 transitions. [2023-11-29 03:40:30,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-11-29 03:40:30,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:30,879 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2023-11-29 03:40:30,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 03:40:30,880 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:30,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:30,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1244535125, now seen corresponding path program 1 times [2023-11-29 03:40:30,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:30,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062022707] [2023-11-29 03:40:30,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:30,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:31,305 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-29 03:40:31,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:31,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062022707] [2023-11-29 03:40:31,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062022707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:31,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:31,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:40:31,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691283066] [2023-11-29 03:40:31,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:31,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:40:31,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:31,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:40:31,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:40:31,309 INFO L87 Difference]: Start difference. First operand 18135 states and 20592 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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) [2023-11-29 03:40:32,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:32,705 INFO L93 Difference]: Finished difference Result 41456 states and 47288 transitions. [2023-11-29 03:40:32,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:40:32,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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 301 [2023-11-29 03:40:32,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:32,723 INFO L225 Difference]: With dead ends: 41456 [2023-11-29 03:40:32,723 INFO L226 Difference]: Without dead ends: 24977 [2023-11-29 03:40:32,731 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 [2023-11-29 03:40:32,732 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 313 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:32,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 420 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 03:40:32,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24977 states. [2023-11-29 03:40:32,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24977 to 20163. [2023-11-29 03:40:32,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20163 states, 20162 states have (on average 1.1247892074198989) internal successors, (22678), 20162 states have internal predecessors, (22678), 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) [2023-11-29 03:40:32,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20163 states to 20163 states and 22678 transitions. [2023-11-29 03:40:32,994 INFO L78 Accepts]: Start accepts. Automaton has 20163 states and 22678 transitions. Word has length 301 [2023-11-29 03:40:32,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:32,994 INFO L495 AbstractCegarLoop]: Abstraction has 20163 states and 22678 transitions. [2023-11-29 03:40:32,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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) [2023-11-29 03:40:32,995 INFO L276 IsEmpty]: Start isEmpty. Operand 20163 states and 22678 transitions. [2023-11-29 03:40:33,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-11-29 03:40:33,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:33,001 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:33,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 03:40:33,001 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:33,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:33,002 INFO L85 PathProgramCache]: Analyzing trace with hash 347530265, now seen corresponding path program 1 times [2023-11-29 03:40:33,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:33,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944899935] [2023-11-29 03:40:33,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:33,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:33,742 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 56 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:40:33,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:33,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944899935] [2023-11-29 03:40:33,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944899935] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:40:33,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292215332] [2023-11-29 03:40:33,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:33,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:33,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:40:33,745 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:40:33,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:40:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:33,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:40:33,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:40:34,010 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 03:40:34,010 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:40:34,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292215332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:34,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:40:34,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 03:40:34,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824183432] [2023-11-29 03:40:34,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:34,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:40:34,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:34,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:40:34,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:40:34,013 INFO L87 Difference]: Start difference. First operand 20163 states and 22678 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2023-11-29 03:40:34,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:34,687 INFO L93 Difference]: Finished difference Result 20349 states and 22869 transitions. [2023-11-29 03:40:34,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:40:34,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 310 [2023-11-29 03:40:34,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:34,705 INFO L225 Difference]: With dead ends: 20349 [2023-11-29 03:40:34,705 INFO L226 Difference]: Without dead ends: 20347 [2023-11-29 03:40:34,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:40:34,710 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 156 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:34,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 379 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:40:34,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20347 states. [2023-11-29 03:40:34,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20347 to 20163. [2023-11-29 03:40:34,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20163 states, 20162 states have (on average 1.1247892074198989) internal successors, (22678), 20162 states have internal predecessors, (22678), 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) [2023-11-29 03:40:34,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20163 states to 20163 states and 22678 transitions. [2023-11-29 03:40:34,965 INFO L78 Accepts]: Start accepts. Automaton has 20163 states and 22678 transitions. Word has length 310 [2023-11-29 03:40:34,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:34,966 INFO L495 AbstractCegarLoop]: Abstraction has 20163 states and 22678 transitions. [2023-11-29 03:40:34,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2023-11-29 03:40:34,966 INFO L276 IsEmpty]: Start isEmpty. Operand 20163 states and 22678 transitions. [2023-11-29 03:40:34,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-11-29 03:40:34,974 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:34,974 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:40:34,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:40:35,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 03:40:35,175 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:35,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:35,175 INFO L85 PathProgramCache]: Analyzing trace with hash -708126595, now seen corresponding path program 1 times [2023-11-29 03:40:35,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:35,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516485006] [2023-11-29 03:40:35,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:35,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 03:40:35,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:35,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516485006] [2023-11-29 03:40:35,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516485006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:35,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:35,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:40:35,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476085432] [2023-11-29 03:40:35,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:35,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:40:35,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:35,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:40:35,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:40:35,511 INFO L87 Difference]: Start difference. First operand 20163 states and 22678 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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) [2023-11-29 03:40:36,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:36,880 INFO L93 Difference]: Finished difference Result 46980 states and 52837 transitions. [2023-11-29 03:40:36,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:40:36,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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 317 [2023-11-29 03:40:36,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:36,903 INFO L225 Difference]: With dead ends: 46980 [2023-11-29 03:40:36,903 INFO L226 Difference]: Without dead ends: 29214 [2023-11-29 03:40:36,912 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 [2023-11-29 03:40:36,913 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 343 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:36,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 75 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:40:36,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29214 states. [2023-11-29 03:40:37,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29214 to 26992. [2023-11-29 03:40:37,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26992 states, 26991 states have (on average 1.1211885443295913) internal successors, (30262), 26991 states have internal predecessors, (30262), 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) [2023-11-29 03:40:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26992 states to 26992 states and 30262 transitions. [2023-11-29 03:40:37,265 INFO L78 Accepts]: Start accepts. Automaton has 26992 states and 30262 transitions. Word has length 317 [2023-11-29 03:40:37,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:37,265 INFO L495 AbstractCegarLoop]: Abstraction has 26992 states and 30262 transitions. [2023-11-29 03:40:37,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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) [2023-11-29 03:40:37,266 INFO L276 IsEmpty]: Start isEmpty. Operand 26992 states and 30262 transitions. [2023-11-29 03:40:37,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-11-29 03:40:37,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:37,274 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:37,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 03:40:37,274 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:37,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:37,275 INFO L85 PathProgramCache]: Analyzing trace with hash -2061924770, now seen corresponding path program 1 times [2023-11-29 03:40:37,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:37,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689505117] [2023-11-29 03:40:37,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:37,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:37,619 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 57 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:40:37,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:37,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689505117] [2023-11-29 03:40:37,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689505117] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:40:37,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122056426] [2023-11-29 03:40:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:37,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:37,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:40:37,621 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:40:37,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:40:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:37,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:40:37,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:40:38,137 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 57 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:40:38,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:40:39,972 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 57 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:40:39,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122056426] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:40:39,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:40:39,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2023-11-29 03:40:39,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44539438] [2023-11-29 03:40:39,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:40:39,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:40:39,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:39,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:40:39,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:40:39,976 INFO L87 Difference]: Start difference. First operand 26992 states and 30262 transitions. Second operand has 10 states, 10 states have (on average 68.7) internal successors, (687), 9 states have internal predecessors, (687), 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) [2023-11-29 03:40:43,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:43,529 INFO L93 Difference]: Finished difference Result 72083 states and 80691 transitions. [2023-11-29 03:40:43,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:40:43,529 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 68.7) internal successors, (687), 9 states have internal predecessors, (687), 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 328 [2023-11-29 03:40:43,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:43,571 INFO L225 Difference]: With dead ends: 72083 [2023-11-29 03:40:43,571 INFO L226 Difference]: Without dead ends: 48040 [2023-11-29 03:40:43,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 650 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:40:43,587 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 1111 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3396 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 3840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 3396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:43,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 184 Invalid, 3840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 3396 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 03:40:43,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48040 states. [2023-11-29 03:40:44,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48040 to 43059. [2023-11-29 03:40:44,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43059 states, 43058 states have (on average 1.1203725207859168) internal successors, (48241), 43058 states have internal predecessors, (48241), 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) [2023-11-29 03:40:44,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43059 states to 43059 states and 48241 transitions. [2023-11-29 03:40:44,223 INFO L78 Accepts]: Start accepts. Automaton has 43059 states and 48241 transitions. Word has length 328 [2023-11-29 03:40:44,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:44,224 INFO L495 AbstractCegarLoop]: Abstraction has 43059 states and 48241 transitions. [2023-11-29 03:40:44,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.7) internal successors, (687), 9 states have internal predecessors, (687), 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) [2023-11-29 03:40:44,224 INFO L276 IsEmpty]: Start isEmpty. Operand 43059 states and 48241 transitions. [2023-11-29 03:40:44,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2023-11-29 03:40:44,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:44,282 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:44,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:40:44,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 03:40:44,483 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:44,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:44,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1955931774, now seen corresponding path program 1 times [2023-11-29 03:40:44,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:44,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398898725] [2023-11-29 03:40:44,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:44,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:44,911 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-11-29 03:40:44,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:44,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398898725] [2023-11-29 03:40:44,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398898725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:44,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:44,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:40:44,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303598765] [2023-11-29 03:40:44,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:44,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:40:44,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:44,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:40:44,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:40:44,914 INFO L87 Difference]: Start difference. First operand 43059 states and 48241 transitions. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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) [2023-11-29 03:40:46,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:46,250 INFO L93 Difference]: Finished difference Result 89076 states and 99655 transitions. [2023-11-29 03:40:46,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:40:46,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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 352 [2023-11-29 03:40:46,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:46,292 INFO L225 Difference]: With dead ends: 89076 [2023-11-29 03:40:46,292 INFO L226 Difference]: Without dead ends: 49152 [2023-11-29 03:40:46,311 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 [2023-11-29 03:40:46,311 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 327 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:46,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 57 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 03:40:46,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49152 states. [2023-11-29 03:40:46,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49152 to 44710. [2023-11-29 03:40:46,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44710 states, 44709 states have (on average 1.118678565836856) internal successors, (50015), 44709 states have internal predecessors, (50015), 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) [2023-11-29 03:40:46,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44710 states to 44710 states and 50015 transitions. [2023-11-29 03:40:46,868 INFO L78 Accepts]: Start accepts. Automaton has 44710 states and 50015 transitions. Word has length 352 [2023-11-29 03:40:46,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:46,869 INFO L495 AbstractCegarLoop]: Abstraction has 44710 states and 50015 transitions. [2023-11-29 03:40:46,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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) [2023-11-29 03:40:46,869 INFO L276 IsEmpty]: Start isEmpty. Operand 44710 states and 50015 transitions. [2023-11-29 03:40:46,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2023-11-29 03:40:46,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:46,882 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:46,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 03:40:46,882 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:46,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:46,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1787910449, now seen corresponding path program 1 times [2023-11-29 03:40:46,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:46,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865680912] [2023-11-29 03:40:46,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:46,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-29 03:40:47,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:47,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865680912] [2023-11-29 03:40:47,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865680912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:47,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:47,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:40:47,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281531333] [2023-11-29 03:40:47,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:47,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:40:47,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:47,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:40:47,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:40:47,131 INFO L87 Difference]: Start difference. First operand 44710 states and 50015 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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) [2023-11-29 03:40:47,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:47,928 INFO L93 Difference]: Finished difference Result 93467 states and 104621 transitions. [2023-11-29 03:40:47,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:40:47,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 388 [2023-11-29 03:40:47,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:47,968 INFO L225 Difference]: With dead ends: 93467 [2023-11-29 03:40:47,968 INFO L226 Difference]: Without dead ends: 49126 [2023-11-29 03:40:47,986 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 [2023-11-29 03:40:47,987 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 63 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:47,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 366 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:40:48,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49126 states. [2023-11-29 03:40:48,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49126 to 46366. [2023-11-29 03:40:48,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46366 states, 46365 states have (on average 1.1162514827995256) internal successors, (51755), 46365 states have internal predecessors, (51755), 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) [2023-11-29 03:40:48,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46366 states to 46366 states and 51755 transitions. [2023-11-29 03:40:48,688 INFO L78 Accepts]: Start accepts. Automaton has 46366 states and 51755 transitions. Word has length 388 [2023-11-29 03:40:48,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:48,688 INFO L495 AbstractCegarLoop]: Abstraction has 46366 states and 51755 transitions. [2023-11-29 03:40:48,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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) [2023-11-29 03:40:48,688 INFO L276 IsEmpty]: Start isEmpty. Operand 46366 states and 51755 transitions. [2023-11-29 03:40:48,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-11-29 03:40:48,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:48,704 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:40:48,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 03:40:48,705 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:48,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:48,705 INFO L85 PathProgramCache]: Analyzing trace with hash 36311470, now seen corresponding path program 1 times [2023-11-29 03:40:48,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:48,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964498819] [2023-11-29 03:40:48,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:48,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2023-11-29 03:40:48,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:48,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964498819] [2023-11-29 03:40:48,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964498819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:48,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:48,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:40:48,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375088579] [2023-11-29 03:40:48,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:48,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:40:48,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:48,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:40:48,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:40:48,878 INFO L87 Difference]: Start difference. First operand 46366 states and 51755 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2023-11-29 03:40:49,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:49,698 INFO L93 Difference]: Finished difference Result 88676 states and 98871 transitions. [2023-11-29 03:40:49,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:40:49,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 403 [2023-11-29 03:40:49,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:49,734 INFO L225 Difference]: With dead ends: 88676 [2023-11-29 03:40:49,734 INFO L226 Difference]: Without dead ends: 45813 [2023-11-29 03:40:49,752 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 [2023-11-29 03:40:49,753 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 166 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:49,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 354 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:40:49,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45813 states. [2023-11-29 03:40:50,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45813 to 27351. [2023-11-29 03:40:50,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27351 states, 27350 states have (on average 1.1157221206581354) internal successors, (30515), 27350 states have internal predecessors, (30515), 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) [2023-11-29 03:40:50,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27351 states to 27351 states and 30515 transitions. [2023-11-29 03:40:50,335 INFO L78 Accepts]: Start accepts. Automaton has 27351 states and 30515 transitions. Word has length 403 [2023-11-29 03:40:50,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:50,336 INFO L495 AbstractCegarLoop]: Abstraction has 27351 states and 30515 transitions. [2023-11-29 03:40:50,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2023-11-29 03:40:50,336 INFO L276 IsEmpty]: Start isEmpty. Operand 27351 states and 30515 transitions. [2023-11-29 03:40:50,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-11-29 03:40:50,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:50,351 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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] [2023-11-29 03:40:50,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 03:40:50,351 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:50,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:50,352 INFO L85 PathProgramCache]: Analyzing trace with hash 436109443, now seen corresponding path program 1 times [2023-11-29 03:40:50,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:50,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227275940] [2023-11-29 03:40:50,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:50,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:50,932 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2023-11-29 03:40:50,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:50,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227275940] [2023-11-29 03:40:50,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227275940] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:40:50,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215506492] [2023-11-29 03:40:50,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:50,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:50,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:40:50,934 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:40:50,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:40:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:51,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:40:51,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:40:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2023-11-29 03:40:51,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:40:51,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215506492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:51,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:40:51,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-29 03:40:51,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970787242] [2023-11-29 03:40:51,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:51,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:40:51,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:51,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:40:51,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:40:51,159 INFO L87 Difference]: Start difference. First operand 27351 states and 30515 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2023-11-29 03:40:52,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:52,018 INFO L93 Difference]: Finished difference Result 55986 states and 62402 transitions. [2023-11-29 03:40:52,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:40:52,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 425 [2023-11-29 03:40:52,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:52,047 INFO L225 Difference]: With dead ends: 55986 [2023-11-29 03:40:52,047 INFO L226 Difference]: Without dead ends: 29004 [2023-11-29 03:40:52,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:40:52,061 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 174 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:52,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 136 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:40:52,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29004 states. [2023-11-29 03:40:52,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29004 to 26422. [2023-11-29 03:40:52,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26422 states, 26421 states have (on average 1.1115400628288103) internal successors, (29368), 26421 states have internal predecessors, (29368), 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) [2023-11-29 03:40:52,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26422 states to 26422 states and 29368 transitions. [2023-11-29 03:40:52,444 INFO L78 Accepts]: Start accepts. Automaton has 26422 states and 29368 transitions. Word has length 425 [2023-11-29 03:40:52,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:52,444 INFO L495 AbstractCegarLoop]: Abstraction has 26422 states and 29368 transitions. [2023-11-29 03:40:52,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2023-11-29 03:40:52,444 INFO L276 IsEmpty]: Start isEmpty. Operand 26422 states and 29368 transitions. [2023-11-29 03:40:52,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-11-29 03:40:52,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:52,459 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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] [2023-11-29 03:40:52,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:40:52,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:52,659 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:52,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:52,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1819270042, now seen corresponding path program 1 times [2023-11-29 03:40:52,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:52,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737581241] [2023-11-29 03:40:52,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:52,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:53,350 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 510 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 03:40:53,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:53,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737581241] [2023-11-29 03:40:53,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737581241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:40:53,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:40:53,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:40:53,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348367004] [2023-11-29 03:40:53,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:40:53,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:40:53,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:40:53,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:40:53,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:40:53,354 INFO L87 Difference]: Start difference. First operand 26422 states and 29368 transitions. Second operand has 4 states, 4 states have (on average 122.0) internal successors, (488), 3 states have internal predecessors, (488), 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) [2023-11-29 03:40:54,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:40:54,630 INFO L93 Difference]: Finished difference Result 60957 states and 67824 transitions. [2023-11-29 03:40:54,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:40:54,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 3 states have internal predecessors, (488), 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 516 [2023-11-29 03:40:54,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:40:54,659 INFO L225 Difference]: With dead ends: 60957 [2023-11-29 03:40:54,660 INFO L226 Difference]: Without dead ends: 34904 [2023-11-29 03:40:54,671 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 [2023-11-29 03:40:54,671 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 127 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:40:54,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 95 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 03:40:54,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34904 states. [2023-11-29 03:40:54,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34904 to 31219. [2023-11-29 03:40:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31219 states, 31218 states have (on average 1.106637196489205) internal successors, (34547), 31218 states have internal predecessors, (34547), 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) [2023-11-29 03:40:54,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31219 states to 31219 states and 34547 transitions. [2023-11-29 03:40:54,997 INFO L78 Accepts]: Start accepts. Automaton has 31219 states and 34547 transitions. Word has length 516 [2023-11-29 03:40:54,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:40:54,998 INFO L495 AbstractCegarLoop]: Abstraction has 31219 states and 34547 transitions. [2023-11-29 03:40:54,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 3 states have internal predecessors, (488), 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) [2023-11-29 03:40:54,998 INFO L276 IsEmpty]: Start isEmpty. Operand 31219 states and 34547 transitions. [2023-11-29 03:40:55,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2023-11-29 03:40:55,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:40:55,017 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:40:55,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 03:40:55,018 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:40:55,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:40:55,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1070980472, now seen corresponding path program 1 times [2023-11-29 03:40:55,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:40:55,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572124025] [2023-11-29 03:40:55,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:55,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:40:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:55,973 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 29 proven. 394 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-29 03:40:55,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:40:55,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572124025] [2023-11-29 03:40:55,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572124025] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:40:55,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301974430] [2023-11-29 03:40:55,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:40:55,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:40:55,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:40:55,975 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:40:55,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:40:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:40:56,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:40:56,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:40:56,902 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 29 proven. 394 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-29 03:40:56,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:41:03,444 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 29 proven. 394 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-29 03:41:03,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301974430] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:41:03,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:41:03,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 11 [2023-11-29 03:41:03,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297861550] [2023-11-29 03:41:03,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:41:03,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:41:03,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:41:03,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:41:03,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:41:03,449 INFO L87 Difference]: Start difference. First operand 31219 states and 34547 transitions. Second operand has 12 states, 12 states have (on average 96.33333333333333) internal successors, (1156), 11 states have internal predecessors, (1156), 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) [2023-11-29 03:41:09,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:41:09,136 INFO L93 Difference]: Finished difference Result 100592 states and 111211 transitions. [2023-11-29 03:41:09,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:41:09,137 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 96.33333333333333) internal successors, (1156), 11 states have internal predecessors, (1156), 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 554 [2023-11-29 03:41:09,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:41:09,209 INFO L225 Difference]: With dead ends: 100592 [2023-11-29 03:41:09,210 INFO L226 Difference]: Without dead ends: 72690 [2023-11-29 03:41:09,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1117 GetRequests, 1100 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:41:09,230 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 1987 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4397 mSolverCounterSat, 1092 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 5489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1092 IncrementalHoareTripleChecker+Valid, 4397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:41:09,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1987 Valid, 224 Invalid, 5489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1092 Valid, 4397 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-29 03:41:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72690 states. [2023-11-29 03:41:09,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72690 to 44478. [2023-11-29 03:41:09,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44478 states, 44477 states have (on average 1.1063471007487016) internal successors, (49207), 44477 states have internal predecessors, (49207), 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) [2023-11-29 03:41:09,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44478 states to 44478 states and 49207 transitions. [2023-11-29 03:41:09,959 INFO L78 Accepts]: Start accepts. Automaton has 44478 states and 49207 transitions. Word has length 554 [2023-11-29 03:41:09,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:41:09,959 INFO L495 AbstractCegarLoop]: Abstraction has 44478 states and 49207 transitions. [2023-11-29 03:41:09,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 96.33333333333333) internal successors, (1156), 11 states have internal predecessors, (1156), 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) [2023-11-29 03:41:09,960 INFO L276 IsEmpty]: Start isEmpty. Operand 44478 states and 49207 transitions. [2023-11-29 03:41:09,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2023-11-29 03:41:09,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:41:09,992 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:41:09,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:41:10,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:41:10,193 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:41:10,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:41:10,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1483537339, now seen corresponding path program 1 times [2023-11-29 03:41:10,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:41:10,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873042737] [2023-11-29 03:41:10,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:41:10,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:41:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:10,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1883 backedges. 1352 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2023-11-29 03:41:10,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:41:10,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873042737] [2023-11-29 03:41:10,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873042737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:41:10,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:41:10,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:41:10,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943769142] [2023-11-29 03:41:10,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:41:10,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:41:10,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:41:10,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:41:10,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:41:10,700 INFO L87 Difference]: Start difference. First operand 44478 states and 49207 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2023-11-29 03:41:11,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:41:11,543 INFO L93 Difference]: Finished difference Result 88256 states and 97581 transitions. [2023-11-29 03:41:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:41:11,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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 823 [2023-11-29 03:41:11,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:41:11,584 INFO L225 Difference]: With dead ends: 88256 [2023-11-29 03:41:11,584 INFO L226 Difference]: Without dead ends: 45807 [2023-11-29 03:41:11,603 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 [2023-11-29 03:41:11,603 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 100 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:41:11,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 148 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:41:11,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45807 states. [2023-11-29 03:41:12,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45807 to 42268. [2023-11-29 03:41:12,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42268 states, 42267 states have (on average 1.097735822272695) internal successors, (46398), 42267 states have internal predecessors, (46398), 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) [2023-11-29 03:41:12,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42268 states to 42268 states and 46398 transitions. [2023-11-29 03:41:12,091 INFO L78 Accepts]: Start accepts. Automaton has 42268 states and 46398 transitions. Word has length 823 [2023-11-29 03:41:12,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:41:12,091 INFO L495 AbstractCegarLoop]: Abstraction has 42268 states and 46398 transitions. [2023-11-29 03:41:12,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2023-11-29 03:41:12,091 INFO L276 IsEmpty]: Start isEmpty. Operand 42268 states and 46398 transitions. [2023-11-29 03:41:12,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2023-11-29 03:41:12,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:41:12,116 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:41:12,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 03:41:12,117 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:41:12,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:41:12,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1884466130, now seen corresponding path program 1 times [2023-11-29 03:41:12,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:41:12,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896787963] [2023-11-29 03:41:12,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:41:12,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:41:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:12,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 1342 proven. 0 refuted. 0 times theorem prover too weak. 965 trivial. 0 not checked. [2023-11-29 03:41:12,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:41:12,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896787963] [2023-11-29 03:41:12,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896787963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:41:12,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:41:12,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:41:12,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675706672] [2023-11-29 03:41:12,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:41:12,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:41:12,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:41:12,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:41:12,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:41:12,887 INFO L87 Difference]: Start difference. First operand 42268 states and 46398 transitions. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 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) [2023-11-29 03:41:13,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:41:13,796 INFO L93 Difference]: Finished difference Result 79191 states and 86910 transitions. [2023-11-29 03:41:13,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:41:13,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 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 856 [2023-11-29 03:41:13,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:41:13,827 INFO L225 Difference]: With dead ends: 79191 [2023-11-29 03:41:13,827 INFO L226 Difference]: Without dead ends: 37292 [2023-11-29 03:41:13,844 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 [2023-11-29 03:41:13,844 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 75 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:41:13,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 339 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:41:13,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37292 states. [2023-11-29 03:41:14,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37292 to 35445. [2023-11-29 03:41:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35445 states, 35444 states have (on average 1.088223676785916) internal successors, (38571), 35444 states have internal predecessors, (38571), 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) [2023-11-29 03:41:14,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35445 states to 35445 states and 38571 transitions. [2023-11-29 03:41:14,232 INFO L78 Accepts]: Start accepts. Automaton has 35445 states and 38571 transitions. Word has length 856 [2023-11-29 03:41:14,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:41:14,233 INFO L495 AbstractCegarLoop]: Abstraction has 35445 states and 38571 transitions. [2023-11-29 03:41:14,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 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) [2023-11-29 03:41:14,233 INFO L276 IsEmpty]: Start isEmpty. Operand 35445 states and 38571 transitions. [2023-11-29 03:41:14,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2023-11-29 03:41:14,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:41:14,258 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:41:14,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 03:41:14,258 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:41:14,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:41:14,259 INFO L85 PathProgramCache]: Analyzing trace with hash 895363327, now seen corresponding path program 1 times [2023-11-29 03:41:14,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:41:14,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525536149] [2023-11-29 03:41:14,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:41:14,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:41:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 1561 proven. 511 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-11-29 03:41:16,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:41:16,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525536149] [2023-11-29 03:41:16,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525536149] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:41:16,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119332990] [2023-11-29 03:41:16,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:41:16,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:41:16,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:41:16,236 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:41:16,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:41:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:16,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:41:16,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:41:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 1056 proven. 0 refuted. 0 times theorem prover too weak. 1195 trivial. 0 not checked. [2023-11-29 03:41:16,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:41:16,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119332990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:41:16,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:41:16,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2023-11-29 03:41:16,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448648761] [2023-11-29 03:41:16,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:41:16,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:41:16,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:41:16,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:41:16,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:41:16,802 INFO L87 Difference]: Start difference. First operand 35445 states and 38571 transitions. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 3 states have internal predecessors, (383), 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) [2023-11-29 03:41:18,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:41:18,165 INFO L93 Difference]: Finished difference Result 76791 states and 83722 transitions. [2023-11-29 03:41:18,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:41:18,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 3 states have internal predecessors, (383), 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 882 [2023-11-29 03:41:18,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:41:18,201 INFO L225 Difference]: With dead ends: 76791 [2023-11-29 03:41:18,201 INFO L226 Difference]: Without dead ends: 41715 [2023-11-29 03:41:18,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:41:18,216 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 232 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:41:18,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 101 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 03:41:18,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41715 states. [2023-11-29 03:41:18,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41715 to 38581. [2023-11-29 03:41:18,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38581 states, 38580 states have (on average 1.0829445308449974) internal successors, (41780), 38580 states have internal predecessors, (41780), 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) [2023-11-29 03:41:18,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38581 states to 38581 states and 41780 transitions. [2023-11-29 03:41:18,651 INFO L78 Accepts]: Start accepts. Automaton has 38581 states and 41780 transitions. Word has length 882 [2023-11-29 03:41:18,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:41:18,651 INFO L495 AbstractCegarLoop]: Abstraction has 38581 states and 41780 transitions. [2023-11-29 03:41:18,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 3 states have internal predecessors, (383), 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) [2023-11-29 03:41:18,651 INFO L276 IsEmpty]: Start isEmpty. Operand 38581 states and 41780 transitions. [2023-11-29 03:41:18,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 960 [2023-11-29 03:41:18,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:41:18,677 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:41:18,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:41:18,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 03:41:18,878 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:41:18,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:41:18,878 INFO L85 PathProgramCache]: Analyzing trace with hash -2001046967, now seen corresponding path program 1 times [2023-11-29 03:41:18,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:41:18,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226434941] [2023-11-29 03:41:18,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:41:18,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:41:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:20,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2837 backedges. 1987 proven. 508 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-11-29 03:41:20,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:41:20,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226434941] [2023-11-29 03:41:20,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226434941] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:41:20,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283564207] [2023-11-29 03:41:20,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:41:20,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:41:20,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:41:20,934 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:41:20,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:41:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:21,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:41:21,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:41:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2837 backedges. 1924 proven. 0 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2023-11-29 03:41:21,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:41:21,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283564207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:41:21,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:41:21,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2023-11-29 03:41:21,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7514035] [2023-11-29 03:41:21,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:41:21,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:41:21,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:41:21,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:41:21,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:41:21,415 INFO L87 Difference]: Start difference. First operand 38581 states and 41780 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2023-11-29 03:41:22,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:41:22,353 INFO L93 Difference]: Finished difference Result 85630 states and 92716 transitions. [2023-11-29 03:41:22,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:41:22,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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 959 [2023-11-29 03:41:22,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:41:22,465 INFO L225 Difference]: With dead ends: 85630 [2023-11-29 03:41:22,465 INFO L226 Difference]: Without dead ends: 47418 [2023-11-29 03:41:22,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 968 GetRequests, 960 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:41:22,474 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 74 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:41:22,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 321 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:41:22,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47418 states. [2023-11-29 03:41:22,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47418 to 38766. [2023-11-29 03:41:22,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38766 states, 38765 states have (on average 1.0812588675351478) internal successors, (41915), 38765 states have internal predecessors, (41915), 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) [2023-11-29 03:41:22,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38766 states to 38766 states and 41915 transitions. [2023-11-29 03:41:22,894 INFO L78 Accepts]: Start accepts. Automaton has 38766 states and 41915 transitions. Word has length 959 [2023-11-29 03:41:22,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:41:22,894 INFO L495 AbstractCegarLoop]: Abstraction has 38766 states and 41915 transitions. [2023-11-29 03:41:22,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2023-11-29 03:41:22,895 INFO L276 IsEmpty]: Start isEmpty. Operand 38766 states and 41915 transitions. [2023-11-29 03:41:22,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2023-11-29 03:41:22,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:41:22,920 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:41:22,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:41:23,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 03:41:23,120 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:41:23,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:41:23,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1191840472, now seen corresponding path program 1 times [2023-11-29 03:41:23,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:41:23,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465741932] [2023-11-29 03:41:23,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:41:23,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:41:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:24,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2609 backedges. 1755 proven. 184 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2023-11-29 03:41:24,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:41:24,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465741932] [2023-11-29 03:41:24,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465741932] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:41:24,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947348773] [2023-11-29 03:41:24,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:41:24,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:41:24,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:41:24,974 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:41:24,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:41:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:25,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:41:25,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:41:25,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2609 backedges. 1627 proven. 434 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2023-11-29 03:41:25,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:41:26,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2609 backedges. 2061 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2023-11-29 03:41:26,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947348773] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:41:26,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:41:26,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 13 [2023-11-29 03:41:26,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500843962] [2023-11-29 03:41:26,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:41:26,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:41:26,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:41:26,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:41:26,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:41:26,244 INFO L87 Difference]: Start difference. First operand 38766 states and 41915 transitions. Second operand has 5 states, 5 states have (on average 115.0) internal successors, (575), 4 states have internal predecessors, (575), 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) [2023-11-29 03:41:27,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:41:27,677 INFO L93 Difference]: Finished difference Result 89323 states and 96633 transitions. [2023-11-29 03:41:27,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:41:27,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 115.0) internal successors, (575), 4 states have internal predecessors, (575), 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 965 [2023-11-29 03:41:27,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:41:27,721 INFO L225 Difference]: With dead ends: 89323 [2023-11-29 03:41:27,721 INFO L226 Difference]: Without dead ends: 52766 [2023-11-29 03:41:27,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1936 GetRequests, 1924 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:41:27,741 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 259 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:41:27,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 61 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 03:41:27,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52766 states. [2023-11-29 03:41:28,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52766 to 51662. [2023-11-29 03:41:28,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51662 states, 51661 states have (on average 1.0804475329552274) internal successors, (55817), 51661 states have internal predecessors, (55817), 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) [2023-11-29 03:41:28,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51662 states to 51662 states and 55817 transitions. [2023-11-29 03:41:28,336 INFO L78 Accepts]: Start accepts. Automaton has 51662 states and 55817 transitions. Word has length 965 [2023-11-29 03:41:28,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:41:28,337 INFO L495 AbstractCegarLoop]: Abstraction has 51662 states and 55817 transitions. [2023-11-29 03:41:28,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.0) internal successors, (575), 4 states have internal predecessors, (575), 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) [2023-11-29 03:41:28,337 INFO L276 IsEmpty]: Start isEmpty. Operand 51662 states and 55817 transitions. [2023-11-29 03:41:28,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1024 [2023-11-29 03:41:28,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:41:28,367 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 03:41:28,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:41:28,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 03:41:28,567 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:41:28,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:41:28,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1959748, now seen corresponding path program 1 times [2023-11-29 03:41:28,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:41:28,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287121252] [2023-11-29 03:41:28,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:41:28,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:41:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3153 backedges. 2055 proven. 0 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2023-11-29 03:41:29,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:41:29,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287121252] [2023-11-29 03:41:29,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287121252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:41:29,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:41:29,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:41:29,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917127165] [2023-11-29 03:41:29,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:41:29,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:41:29,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:41:29,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:41:29,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:41:29,315 INFO L87 Difference]: Start difference. First operand 51662 states and 55817 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2023-11-29 03:41:30,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:41:30,115 INFO L93 Difference]: Finished difference Result 88215 states and 95383 transitions. [2023-11-29 03:41:30,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:41:30,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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 1023 [2023-11-29 03:41:30,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:41:30,147 INFO L225 Difference]: With dead ends: 88215 [2023-11-29 03:41:30,147 INFO L226 Difference]: Without dead ends: 39130 [2023-11-29 03:41:30,165 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 [2023-11-29 03:41:30,166 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 97 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:41:30,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 282 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:41:30,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39130 states. [2023-11-29 03:41:30,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39130 to 37467. [2023-11-29 03:41:30,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37467 states, 37466 states have (on average 1.0766294773928362) internal successors, (40337), 37466 states have internal predecessors, (40337), 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) [2023-11-29 03:41:30,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37467 states to 37467 states and 40337 transitions. [2023-11-29 03:41:30,610 INFO L78 Accepts]: Start accepts. Automaton has 37467 states and 40337 transitions. Word has length 1023 [2023-11-29 03:41:30,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:41:30,611 INFO L495 AbstractCegarLoop]: Abstraction has 37467 states and 40337 transitions. [2023-11-29 03:41:30,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2023-11-29 03:41:30,611 INFO L276 IsEmpty]: Start isEmpty. Operand 37467 states and 40337 transitions. [2023-11-29 03:41:30,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2023-11-29 03:41:30,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:41:30,639 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:41:30,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 03:41:30,640 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:41:30,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:41:30,640 INFO L85 PathProgramCache]: Analyzing trace with hash 175313503, now seen corresponding path program 1 times [2023-11-29 03:41:30,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:41:30,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771002514] [2023-11-29 03:41:30,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:41:30,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:41:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3450 backedges. 2272 proven. 735 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2023-11-29 03:41:32,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:41:32,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771002514] [2023-11-29 03:41:32,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771002514] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:41:32,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256534860] [2023-11-29 03:41:32,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:41:32,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:41:32,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:41:32,864 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:41:32,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:41:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:33,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:41:33,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:41:33,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3450 backedges. 2063 proven. 221 refuted. 0 times theorem prover too weak. 1166 trivial. 0 not checked. [2023-11-29 03:41:33,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:41:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3450 backedges. 1928 proven. 192 refuted. 0 times theorem prover too weak. 1330 trivial. 0 not checked. [2023-11-29 03:41:35,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256534860] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:41:35,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:41:35,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 16 [2023-11-29 03:41:35,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351345534] [2023-11-29 03:41:35,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:41:35,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:41:35,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:41:35,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:41:35,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:41:35,877 INFO L87 Difference]: Start difference. First operand 37467 states and 40337 transitions. Second operand has 16 states, 16 states have (on average 103.25) internal successors, (1652), 16 states have internal predecessors, (1652), 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) [2023-11-29 03:41:43,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:41:43,612 INFO L93 Difference]: Finished difference Result 92467 states and 99435 transitions. [2023-11-29 03:41:43,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 03:41:43,613 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 103.25) internal successors, (1652), 16 states have internal predecessors, (1652), 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 1077 [2023-11-29 03:41:43,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:41:43,614 INFO L225 Difference]: With dead ends: 92467 [2023-11-29 03:41:43,614 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 03:41:43,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2219 GetRequests, 2168 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=642, Invalid=2114, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 03:41:43,633 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 2158 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 10400 mSolverCounterSat, 826 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 11226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 826 IncrementalHoareTripleChecker+Valid, 10400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:41:43,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2158 Valid, 228 Invalid, 11226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [826 Valid, 10400 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-11-29 03:41:43,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 03:41:43,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 03:41:43,634 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) [2023-11-29 03:41:43,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 03:41:43,634 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1077 [2023-11-29 03:41:43,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:41:43,634 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 03:41:43,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 103.25) internal successors, (1652), 16 states have internal predecessors, (1652), 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) [2023-11-29 03:41:43,635 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 03:41:43,635 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 03:41:43,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 03:41:43,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 03:41:43,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09351ebe-9de6-4890-8336-8273241676b7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 03:41:43,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.