./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label00.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_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/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_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label00.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/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_31dec12e-7650-4ab1-9468-cbb489366b18/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 28aa2103046ded31b2c668ebdabdc65e41c8f634ba4d86773363e431476a6327 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:39:39,045 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:39:39,112 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:39:39,117 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:39:39,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:39:39,142 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:39:39,142 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:39:39,143 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:39:39,144 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:39:39,144 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:39:39,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:39:39,145 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:39:39,146 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:39:39,146 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:39:39,147 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:39:39,148 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:39:39,148 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:39:39,149 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:39:39,149 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:39:39,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:39:39,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:39:39,151 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:39:39,152 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:39:39,152 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:39:39,152 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:39:39,153 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:39:39,153 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:39:39,154 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:39:39,154 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:39:39,155 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:39:39,155 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:39:39,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:39:39,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:39:39,156 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:39:39,156 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:39:39,157 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:39:39,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:39:39,157 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:39:39,157 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:39:39,157 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:39:39,158 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:39:39,158 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:39:39,158 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_31dec12e-7650-4ab1-9468-cbb489366b18/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28aa2103046ded31b2c668ebdabdc65e41c8f634ba4d86773363e431476a6327 [2023-11-29 02:39:39,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:39:39,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:39:39,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:39:39,399 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:39:39,400 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:39:39,401 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/eca-rers2012/Problem17_label00.c [2023-11-29 02:39:42,138 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:39:42,523 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:39:42,523 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/sv-benchmarks/c/eca-rers2012/Problem17_label00.c [2023-11-29 02:39:42,552 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/data/82bf81c1b/b42a30ccb9644d86b6e30d22692e406f/FLAG842a857db [2023-11-29 02:39:42,567 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/data/82bf81c1b/b42a30ccb9644d86b6e30d22692e406f [2023-11-29 02:39:42,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:39:42,571 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:39:42,573 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:39:42,573 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:39:42,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:39:42,579 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:39:42" (1/1) ... [2023-11-29 02:39:42,580 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42831d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:42, skipping insertion in model container [2023-11-29 02:39:42,580 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:39:42" (1/1) ... [2023-11-29 02:39:42,677 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:39:42,904 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_31dec12e-7650-4ab1-9468-cbb489366b18/sv-benchmarks/c/eca-rers2012/Problem17_label00.c[7994,8007] [2023-11-29 02:39:43,439 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:39:43,451 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:39:43,478 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_31dec12e-7650-4ab1-9468-cbb489366b18/sv-benchmarks/c/eca-rers2012/Problem17_label00.c[7994,8007] [2023-11-29 02:39:43,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:39:43,833 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:39:43,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:43 WrapperNode [2023-11-29 02:39:43,833 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:39:43,834 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:39:43,834 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:39:43,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:39:43,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:43" (1/1) ... [2023-11-29 02:39:43,876 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:43" (1/1) ... [2023-11-29 02:39:44,170 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2023-11-29 02:39:44,170 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:39:44,171 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:39:44,171 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:39:44,171 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:39:44,183 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:43" (1/1) ... [2023-11-29 02:39:44,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:43" (1/1) ... [2023-11-29 02:39:44,220 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:43" (1/1) ... [2023-11-29 02:39:44,352 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 02:39:44,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:43" (1/1) ... [2023-11-29 02:39:44,353 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:43" (1/1) ... [2023-11-29 02:39:44,476 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:43" (1/1) ... [2023-11-29 02:39:44,492 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:43" (1/1) ... [2023-11-29 02:39:44,536 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:43" (1/1) ... [2023-11-29 02:39:44,547 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:43" (1/1) ... [2023-11-29 02:39:44,637 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:39:44,638 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:39:44,638 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:39:44,638 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:39:44,639 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:43" (1/1) ... [2023-11-29 02:39:44,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:39:44,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:39:44,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:39:44,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:39:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:39:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:39:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:39:44,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:39:44,778 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:39:44,780 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:39:48,632 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:39:48,685 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:39:48,685 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:39:48,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:39:48 BoogieIcfgContainer [2023-11-29 02:39:48,686 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:39:48,690 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:39:48,690 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:39:48,693 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:39:48,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:39:42" (1/3) ... [2023-11-29 02:39:48,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500bb540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:39:48, skipping insertion in model container [2023-11-29 02:39:48,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:39:43" (2/3) ... [2023-11-29 02:39:48,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500bb540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:39:48, skipping insertion in model container [2023-11-29 02:39:48,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:39:48" (3/3) ... [2023-11-29 02:39:48,696 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label00.c [2023-11-29 02:39:48,715 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:39:48,716 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:39:48,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:39:48,787 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;@24bf290, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:39:48,787 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:39:48,794 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 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 02:39:48,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 02:39:48,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:39:48,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:39:48,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:39:48,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:39:48,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1866133670, now seen corresponding path program 1 times [2023-11-29 02:39:48,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:39:48,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252504882] [2023-11-29 02:39:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:39:48,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:39:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:49,041 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 02:39:49,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:39:49,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252504882] [2023-11-29 02:39:49,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252504882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:39:49,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:39:49,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:39:49,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780499603] [2023-11-29 02:39:49,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:39:49,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:39:49,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:39:49,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:39:49,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:39:49,102 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 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 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 02:39:49,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:39:49,204 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-11-29 02:39:49,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:39:49,207 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-11-29 02:39:49,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:39:49,225 INFO L225 Difference]: With dead ends: 1055 [2023-11-29 02:39:49,225 INFO L226 Difference]: Without dead ends: 526 [2023-11-29 02:39:49,229 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 02:39:49,233 INFO L413 NwaCegarLoop]: 935 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, 935 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 02:39:49,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:39:49,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-11-29 02:39:49,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-11-29 02:39:49,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 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 02:39:49,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-11-29 02:39:49,299 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 53 [2023-11-29 02:39:49,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:39:49,299 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-11-29 02:39:49,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 02:39:49,300 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-11-29 02:39:49,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 02:39:49,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:39:49,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:39:49,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:39:49,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:39:49,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:39:49,303 INFO L85 PathProgramCache]: Analyzing trace with hash 184422738, now seen corresponding path program 1 times [2023-11-29 02:39:49,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:39:49,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15534451] [2023-11-29 02:39:49,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:39:49,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:39:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:49,462 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 02:39:49,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:39:49,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15534451] [2023-11-29 02:39:49,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15534451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:39:49,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:39:49,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:39:49,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86713943] [2023-11-29 02:39:49,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:39:49,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:39:49,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:39:49,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:39:49,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:39:49,466 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 02:39:52,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:39:52,138 INFO L93 Difference]: Finished difference Result 1499 states and 2693 transitions. [2023-11-29 02:39:52,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:39:52,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-11-29 02:39:52,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:39:52,144 INFO L225 Difference]: With dead ends: 1499 [2023-11-29 02:39:52,144 INFO L226 Difference]: Without dead ends: 974 [2023-11-29 02:39:52,145 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 02:39:52,146 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 420 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:39:52,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 495 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 02:39:52,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-11-29 02:39:52,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 971. [2023-11-29 02:39:52,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5082474226804123) internal successors, (1463), 970 states have internal predecessors, (1463), 0 states have call successors, (0), 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 02:39:52,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1463 transitions. [2023-11-29 02:39:52,184 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1463 transitions. Word has length 53 [2023-11-29 02:39:52,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:39:52,184 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1463 transitions. [2023-11-29 02:39:52,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 02:39:52,185 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1463 transitions. [2023-11-29 02:39:52,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 02:39:52,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:39:52,190 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:39:52,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:39:52,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:39:52,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:39:52,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1375403422, now seen corresponding path program 1 times [2023-11-29 02:39:52,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:39:52,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458402372] [2023-11-29 02:39:52,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:39:52,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:39:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:39:52,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:39:52,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458402372] [2023-11-29 02:39:52,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458402372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:39:52,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:39:52,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:39:52,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707475401] [2023-11-29 02:39:52,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:39:52,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:39:52,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:39:52,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:39:52,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:39:52,571 INFO L87 Difference]: Start difference. First operand 971 states and 1463 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 02:39:56,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:39:56,981 INFO L93 Difference]: Finished difference Result 3736 states and 5654 transitions. [2023-11-29 02:39:56,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:39:56,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2023-11-29 02:39:56,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:39:56,998 INFO L225 Difference]: With dead ends: 3736 [2023-11-29 02:39:56,998 INFO L226 Difference]: Without dead ends: 2766 [2023-11-29 02:39:57,001 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 02:39:57,002 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 908 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2550 mSolverCounterSat, 784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 3334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 784 IncrementalHoareTripleChecker+Valid, 2550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:39:57,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 268 Invalid, 3334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [784 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-29 02:39:57,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2023-11-29 02:39:57,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2723. [2023-11-29 02:39:57,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2723 states, 2722 states have (on average 1.3949301983835416) internal successors, (3797), 2722 states have internal predecessors, (3797), 0 states have call successors, (0), 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 02:39:57,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 3797 transitions. [2023-11-29 02:39:57,075 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 3797 transitions. Word has length 123 [2023-11-29 02:39:57,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:39:57,076 INFO L495 AbstractCegarLoop]: Abstraction has 2723 states and 3797 transitions. [2023-11-29 02:39:57,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 02:39:57,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 3797 transitions. [2023-11-29 02:39:57,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-29 02:39:57,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:39:57,081 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:39:57,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:39:57,081 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:39:57,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:39:57,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2133161281, now seen corresponding path program 1 times [2023-11-29 02:39:57,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:39:57,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390394083] [2023-11-29 02:39:57,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:39:57,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:39:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:57,262 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:39:57,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:39:57,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390394083] [2023-11-29 02:39:57,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390394083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:39:57,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:39:57,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:39:57,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313389097] [2023-11-29 02:39:57,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:39:57,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:39:57,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:39:57,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:39:57,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:39:57,266 INFO L87 Difference]: Start difference. First operand 2723 states and 3797 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 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 02:39:59,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:39:59,483 INFO L93 Difference]: Finished difference Result 8008 states and 11160 transitions. [2023-11-29 02:39:59,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:39:59,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 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 145 [2023-11-29 02:39:59,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:39:59,502 INFO L225 Difference]: With dead ends: 8008 [2023-11-29 02:39:59,502 INFO L226 Difference]: Without dead ends: 4427 [2023-11-29 02:39:59,505 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 02:39:59,507 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:39:59,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 02:39:59,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4427 states. [2023-11-29 02:39:59,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4427 to 4427. [2023-11-29 02:39:59,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 4426 states have (on average 1.2071848169905106) internal successors, (5343), 4426 states have internal predecessors, (5343), 0 states have call successors, (0), 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 02:39:59,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 5343 transitions. [2023-11-29 02:39:59,578 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 5343 transitions. Word has length 145 [2023-11-29 02:39:59,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:39:59,578 INFO L495 AbstractCegarLoop]: Abstraction has 4427 states and 5343 transitions. [2023-11-29 02:39:59,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 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 02:39:59,579 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 5343 transitions. [2023-11-29 02:39:59,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-29 02:39:59,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:39:59,582 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:39:59,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:39:59,582 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:39:59,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:39:59,583 INFO L85 PathProgramCache]: Analyzing trace with hash -437070539, now seen corresponding path program 1 times [2023-11-29 02:39:59,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:39:59,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128317685] [2023-11-29 02:39:59,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:39:59,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:39:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:39:59,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:39:59,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128317685] [2023-11-29 02:39:59,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128317685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:39:59,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:39:59,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:39:59,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482625564] [2023-11-29 02:39:59,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:39:59,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:39:59,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:39:59,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:39:59,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:39:59,779 INFO L87 Difference]: Start difference. First operand 4427 states and 5343 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 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 02:40:01,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:01,948 INFO L93 Difference]: Finished difference Result 10988 states and 13619 transitions. [2023-11-29 02:40:01,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:40:01,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 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 205 [2023-11-29 02:40:01,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:01,972 INFO L225 Difference]: With dead ends: 10988 [2023-11-29 02:40:01,972 INFO L226 Difference]: Without dead ends: 6562 [2023-11-29 02:40:01,976 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 02:40:01,977 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:40:01,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 798 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 02:40:01,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6562 states. [2023-11-29 02:40:02,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6562 to 6562. [2023-11-29 02:40:02,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6562 states, 6561 states have (on average 1.2025605852766346) internal successors, (7890), 6561 states have internal predecessors, (7890), 0 states have call successors, (0), 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 02:40:02,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6562 states to 6562 states and 7890 transitions. [2023-11-29 02:40:02,070 INFO L78 Accepts]: Start accepts. Automaton has 6562 states and 7890 transitions. Word has length 205 [2023-11-29 02:40:02,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:02,070 INFO L495 AbstractCegarLoop]: Abstraction has 6562 states and 7890 transitions. [2023-11-29 02:40:02,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 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 02:40:02,071 INFO L276 IsEmpty]: Start isEmpty. Operand 6562 states and 7890 transitions. [2023-11-29 02:40:02,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 02:40:02,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:02,073 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:40:02,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:40:02,073 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:02,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:02,074 INFO L85 PathProgramCache]: Analyzing trace with hash -470195344, now seen corresponding path program 1 times [2023-11-29 02:40:02,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:02,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959331694] [2023-11-29 02:40:02,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:02,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 02:40:02,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:02,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959331694] [2023-11-29 02:40:02,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959331694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:40:02,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:40:02,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:40:02,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887227580] [2023-11-29 02:40:02,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:02,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:40:02,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:02,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:40:02,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:40:02,229 INFO L87 Difference]: Start difference. First operand 6562 states and 7890 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 02:40:04,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:04,497 INFO L93 Difference]: Finished difference Result 16520 states and 20209 transitions. [2023-11-29 02:40:04,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:40:04,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 207 [2023-11-29 02:40:04,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:04,532 INFO L225 Difference]: With dead ends: 16520 [2023-11-29 02:40:04,533 INFO L226 Difference]: Without dead ends: 9959 [2023-11-29 02:40:04,539 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 02:40:04,540 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 399 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:40:04,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 484 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 02:40:04,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9959 states. [2023-11-29 02:40:04,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9959 to 6960. [2023-11-29 02:40:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6960 states, 6959 states have (on average 1.1939933898548643) internal successors, (8309), 6959 states have internal predecessors, (8309), 0 states have call successors, (0), 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 02:40:04,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6960 states to 6960 states and 8309 transitions. [2023-11-29 02:40:04,693 INFO L78 Accepts]: Start accepts. Automaton has 6960 states and 8309 transitions. Word has length 207 [2023-11-29 02:40:04,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:04,694 INFO L495 AbstractCegarLoop]: Abstraction has 6960 states and 8309 transitions. [2023-11-29 02:40:04,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 02:40:04,694 INFO L276 IsEmpty]: Start isEmpty. Operand 6960 states and 8309 transitions. [2023-11-29 02:40:04,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-11-29 02:40:04,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:04,698 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 02:40:04,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:40:04,699 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:04,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:04,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1668185292, now seen corresponding path program 1 times [2023-11-29 02:40:04,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:04,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931874744] [2023-11-29 02:40:04,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:04,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-29 02:40:04,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:04,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931874744] [2023-11-29 02:40:04,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931874744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:40:04,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:40:04,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:40:04,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931570464] [2023-11-29 02:40:04,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:04,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:40:04,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:04,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:40:04,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:40:04,906 INFO L87 Difference]: Start difference. First operand 6960 states and 8309 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 02:40:07,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:07,326 INFO L93 Difference]: Finished difference Result 17323 states and 21058 transitions. [2023-11-29 02:40:07,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:40:07,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2023-11-29 02:40:07,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:07,355 INFO L225 Difference]: With dead ends: 17323 [2023-11-29 02:40:07,355 INFO L226 Difference]: Without dead ends: 10364 [2023-11-29 02:40:07,360 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 02:40:07,361 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 423 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:40:07,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 450 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 02:40:07,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10364 states. [2023-11-29 02:40:07,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10364 to 9508. [2023-11-29 02:40:07,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9508 states, 9507 states have (on average 1.1959608709372043) internal successors, (11370), 9507 states have internal predecessors, (11370), 0 states have call successors, (0), 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 02:40:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9508 states to 9508 states and 11370 transitions. [2023-11-29 02:40:07,518 INFO L78 Accepts]: Start accepts. Automaton has 9508 states and 11370 transitions. Word has length 220 [2023-11-29 02:40:07,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:07,518 INFO L495 AbstractCegarLoop]: Abstraction has 9508 states and 11370 transitions. [2023-11-29 02:40:07,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 02:40:07,519 INFO L276 IsEmpty]: Start isEmpty. Operand 9508 states and 11370 transitions. [2023-11-29 02:40:07,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-29 02:40:07,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:07,524 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:40:07,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:40:07,524 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:07,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:07,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1774281270, now seen corresponding path program 1 times [2023-11-29 02:40:07,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:07,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992232739] [2023-11-29 02:40:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:07,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:07,705 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-29 02:40:07,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:07,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992232739] [2023-11-29 02:40:07,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992232739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:40:07,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:40:07,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:40:07,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882996567] [2023-11-29 02:40:07,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:07,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:40:07,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:07,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:40:07,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:40:07,707 INFO L87 Difference]: Start difference. First operand 9508 states and 11370 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 02:40:10,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:10,239 INFO L93 Difference]: Finished difference Result 25398 states and 30226 transitions. [2023-11-29 02:40:10,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:40:10,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 252 [2023-11-29 02:40:10,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:10,260 INFO L225 Difference]: With dead ends: 25398 [2023-11-29 02:40:10,260 INFO L226 Difference]: Without dead ends: 15891 [2023-11-29 02:40:10,266 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 02:40:10,267 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 484 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:40:10,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 280 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 02:40:10,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15891 states. [2023-11-29 02:40:10,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15891 to 14183. [2023-11-29 02:40:10,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14183 states, 14182 states have (on average 1.1846001974333662) internal successors, (16800), 14182 states have internal predecessors, (16800), 0 states have call successors, (0), 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 02:40:10,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14183 states to 14183 states and 16800 transitions. [2023-11-29 02:40:10,425 INFO L78 Accepts]: Start accepts. Automaton has 14183 states and 16800 transitions. Word has length 252 [2023-11-29 02:40:10,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:10,425 INFO L495 AbstractCegarLoop]: Abstraction has 14183 states and 16800 transitions. [2023-11-29 02:40:10,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 02:40:10,426 INFO L276 IsEmpty]: Start isEmpty. Operand 14183 states and 16800 transitions. [2023-11-29 02:40:10,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-11-29 02:40:10,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:10,433 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:10,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:40:10,433 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:10,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:10,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1927600320, now seen corresponding path program 1 times [2023-11-29 02:40:10,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:10,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185419126] [2023-11-29 02:40:10,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:10,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:10,823 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-29 02:40:10,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:10,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185419126] [2023-11-29 02:40:10,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185419126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:40:10,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:40:10,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:40:10,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097837051] [2023-11-29 02:40:10,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:10,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:40:10,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:10,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:40:10,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:40:10,828 INFO L87 Difference]: Start difference. First operand 14183 states and 16800 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 02:40:13,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:13,395 INFO L93 Difference]: Finished difference Result 33920 states and 40605 transitions. [2023-11-29 02:40:13,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:40:13,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 269 [2023-11-29 02:40:13,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:13,426 INFO L225 Difference]: With dead ends: 33920 [2023-11-29 02:40:13,426 INFO L226 Difference]: Without dead ends: 19738 [2023-11-29 02:40:13,437 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 02:40:13,437 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 454 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:40:13,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 452 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 02:40:13,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19738 states. [2023-11-29 02:40:13,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19738 to 18028. [2023-11-29 02:40:13,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18028 states, 18027 states have (on average 1.2058578798468964) internal successors, (21738), 18027 states have internal predecessors, (21738), 0 states have call successors, (0), 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 02:40:13,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18028 states to 18028 states and 21738 transitions. [2023-11-29 02:40:13,699 INFO L78 Accepts]: Start accepts. Automaton has 18028 states and 21738 transitions. Word has length 269 [2023-11-29 02:40:13,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:13,700 INFO L495 AbstractCegarLoop]: Abstraction has 18028 states and 21738 transitions. [2023-11-29 02:40:13,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 02:40:13,700 INFO L276 IsEmpty]: Start isEmpty. Operand 18028 states and 21738 transitions. [2023-11-29 02:40:13,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-11-29 02:40:13,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:13,705 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:40:13,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 02:40:13,705 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:13,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:13,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1992306372, now seen corresponding path program 1 times [2023-11-29 02:40:13,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:13,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799138300] [2023-11-29 02:40:13,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:13,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:14,237 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 242 proven. 70 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 02:40:14,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:14,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799138300] [2023-11-29 02:40:14,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799138300] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:40:14,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408224399] [2023-11-29 02:40:14,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:14,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:40:14,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:40:14,242 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:40:14,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:40:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:14,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:40:14,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:40:14,649 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 242 proven. 70 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 02:40:14,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:40:14,966 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 02:40:14,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408224399] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:40:14,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:40:14,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-11-29 02:40:14,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126962853] [2023-11-29 02:40:14,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:14,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:40:14,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:14,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:40:14,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:40:14,969 INFO L87 Difference]: Start difference. First operand 18028 states and 21738 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 02:40:19,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:19,053 INFO L93 Difference]: Finished difference Result 49691 states and 60241 transitions. [2023-11-29 02:40:19,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:40:19,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 277 [2023-11-29 02:40:19,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:19,082 INFO L225 Difference]: With dead ends: 49691 [2023-11-29 02:40:19,082 INFO L226 Difference]: Without dead ends: 30793 [2023-11-29 02:40:19,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:40:19,097 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 1069 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 1223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 3489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1223 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:40:19,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 137 Invalid, 3489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1223 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 02:40:19,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30793 states. [2023-11-29 02:40:19,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30793 to 30366. [2023-11-29 02:40:19,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30366 states, 30365 states have (on average 1.1689445084801582) internal successors, (35495), 30365 states have internal predecessors, (35495), 0 states have call successors, (0), 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 02:40:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30366 states to 30366 states and 35495 transitions. [2023-11-29 02:40:19,476 INFO L78 Accepts]: Start accepts. Automaton has 30366 states and 35495 transitions. Word has length 277 [2023-11-29 02:40:19,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:19,477 INFO L495 AbstractCegarLoop]: Abstraction has 30366 states and 35495 transitions. [2023-11-29 02:40:19,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 02:40:19,477 INFO L276 IsEmpty]: Start isEmpty. Operand 30366 states and 35495 transitions. [2023-11-29 02:40:19,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-11-29 02:40:19,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:19,481 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:40:19,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:40:19,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 02:40:19,683 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:19,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash -547710925, now seen corresponding path program 1 times [2023-11-29 02:40:19,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:19,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179081465] [2023-11-29 02:40:19,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:19,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-29 02:40:19,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:19,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179081465] [2023-11-29 02:40:19,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179081465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:40:19,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:40:19,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:40:19,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915483019] [2023-11-29 02:40:19,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:19,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:40:19,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:19,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:40:19,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:40:19,993 INFO L87 Difference]: Start difference. First operand 30366 states and 35495 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 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 02:40:22,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:22,423 INFO L93 Difference]: Finished difference Result 76488 states and 89022 transitions. [2023-11-29 02:40:22,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:40:22,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 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 285 [2023-11-29 02:40:22,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:22,462 INFO L225 Difference]: With dead ends: 76488 [2023-11-29 02:40:22,462 INFO L226 Difference]: Without dead ends: 44415 [2023-11-29 02:40:22,477 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 02:40:22,478 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 482 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:40:22,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 608 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 02:40:22,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44415 states. [2023-11-29 02:40:22,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44415 to 39724. [2023-11-29 02:40:22,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39724 states, 39723 states have (on average 1.144299272461798) internal successors, (45455), 39723 states have internal predecessors, (45455), 0 states have call successors, (0), 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 02:40:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39724 states to 39724 states and 45455 transitions. [2023-11-29 02:40:23,003 INFO L78 Accepts]: Start accepts. Automaton has 39724 states and 45455 transitions. Word has length 285 [2023-11-29 02:40:23,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:23,004 INFO L495 AbstractCegarLoop]: Abstraction has 39724 states and 45455 transitions. [2023-11-29 02:40:23,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 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 02:40:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 39724 states and 45455 transitions. [2023-11-29 02:40:23,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-11-29 02:40:23,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:23,007 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:40:23,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 02:40:23,008 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:23,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:23,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1307338848, now seen corresponding path program 1 times [2023-11-29 02:40:23,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:23,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128074679] [2023-11-29 02:40:23,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:23,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:23,155 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-29 02:40:23,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:23,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128074679] [2023-11-29 02:40:23,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128074679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:40:23,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:40:23,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:40:23,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121829333] [2023-11-29 02:40:23,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:23,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:40:23,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:23,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:40:23,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:40:23,157 INFO L87 Difference]: Start difference. First operand 39724 states and 45455 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 02:40:25,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:25,259 INFO L93 Difference]: Finished difference Result 84967 states and 97498 transitions. [2023-11-29 02:40:25,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:40:25,259 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 290 [2023-11-29 02:40:25,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:25,295 INFO L225 Difference]: With dead ends: 84967 [2023-11-29 02:40:25,295 INFO L226 Difference]: Without dead ends: 45244 [2023-11-29 02:40:25,312 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 02:40:25,312 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 372 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:40:25,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 823 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 02:40:25,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45244 states. [2023-11-29 02:40:25,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45244 to 44819. [2023-11-29 02:40:25,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44819 states, 44818 states have (on average 1.1323129099915212) internal successors, (50748), 44818 states have internal predecessors, (50748), 0 states have call successors, (0), 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 02:40:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44819 states to 44819 states and 50748 transitions. [2023-11-29 02:40:25,865 INFO L78 Accepts]: Start accepts. Automaton has 44819 states and 50748 transitions. Word has length 290 [2023-11-29 02:40:25,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:25,865 INFO L495 AbstractCegarLoop]: Abstraction has 44819 states and 50748 transitions. [2023-11-29 02:40:25,865 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 02:40:25,865 INFO L276 IsEmpty]: Start isEmpty. Operand 44819 states and 50748 transitions. [2023-11-29 02:40:25,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-11-29 02:40:25,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:25,868 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, 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, 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 02:40:25,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 02:40:25,869 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:25,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:25,869 INFO L85 PathProgramCache]: Analyzing trace with hash -891598437, now seen corresponding path program 1 times [2023-11-29 02:40:25,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:25,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054387679] [2023-11-29 02:40:25,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:25,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:26,376 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-29 02:40:26,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:26,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054387679] [2023-11-29 02:40:26,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054387679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:40:26,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:40:26,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:40:26,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502017648] [2023-11-29 02:40:26,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:26,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:40:26,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:26,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:40:26,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:40:26,379 INFO L87 Difference]: Start difference. First operand 44819 states and 50748 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 02:40:30,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:30,230 INFO L93 Difference]: Finished difference Result 117358 states and 132889 transitions. [2023-11-29 02:40:30,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:40:30,231 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 313 [2023-11-29 02:40:30,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:30,288 INFO L225 Difference]: With dead ends: 117358 [2023-11-29 02:40:30,288 INFO L226 Difference]: Without dead ends: 70839 [2023-11-29 02:40:30,305 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 02:40:30,306 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 843 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2693 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 3097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:40:30,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 321 Invalid, 3097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 2693 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 02:40:30,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70839 states. [2023-11-29 02:40:31,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70839 to 69510. [2023-11-29 02:40:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69510 states, 69509 states have (on average 1.1229912673179012) internal successors, (78058), 69509 states have internal predecessors, (78058), 0 states have call successors, (0), 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 02:40:31,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69510 states to 69510 states and 78058 transitions. [2023-11-29 02:40:31,196 INFO L78 Accepts]: Start accepts. Automaton has 69510 states and 78058 transitions. Word has length 313 [2023-11-29 02:40:31,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:31,197 INFO L495 AbstractCegarLoop]: Abstraction has 69510 states and 78058 transitions. [2023-11-29 02:40:31,197 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 02:40:31,197 INFO L276 IsEmpty]: Start isEmpty. Operand 69510 states and 78058 transitions. [2023-11-29 02:40:31,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-11-29 02:40:31,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:31,201 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, 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, 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] [2023-11-29 02:40:31,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 02:40:31,201 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:31,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:31,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1171549942, now seen corresponding path program 1 times [2023-11-29 02:40:31,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:31,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935355854] [2023-11-29 02:40:31,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:31,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 02:40:31,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:31,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935355854] [2023-11-29 02:40:31,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935355854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:40:31,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:40:31,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:40:31,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180994877] [2023-11-29 02:40:31,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:31,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:40:31,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:31,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:40:31,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:40:31,413 INFO L87 Difference]: Start difference. First operand 69510 states and 78058 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 02:40:33,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:33,577 INFO L93 Difference]: Finished difference Result 149690 states and 168125 transitions. [2023-11-29 02:40:33,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:40:33,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 02:40:33,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:33,643 INFO L225 Difference]: With dead ends: 149690 [2023-11-29 02:40:33,643 INFO L226 Difference]: Without dead ends: 80181 [2023-11-29 02:40:33,664 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 02:40:33,665 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 365 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:40:33,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 766 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 02:40:33,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80181 states. [2023-11-29 02:40:34,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80181 to 79318. [2023-11-29 02:40:34,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79318 states, 79317 states have (on average 1.1088795592369858) internal successors, (87953), 79317 states have internal predecessors, (87953), 0 states have call successors, (0), 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 02:40:34,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79318 states to 79318 states and 87953 transitions. [2023-11-29 02:40:34,714 INFO L78 Accepts]: Start accepts. Automaton has 79318 states and 87953 transitions. Word has length 328 [2023-11-29 02:40:34,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:34,715 INFO L495 AbstractCegarLoop]: Abstraction has 79318 states and 87953 transitions. [2023-11-29 02:40:34,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 02:40:34,715 INFO L276 IsEmpty]: Start isEmpty. Operand 79318 states and 87953 transitions. [2023-11-29 02:40:34,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-11-29 02:40:34,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:34,718 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:34,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 02:40:34,718 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:34,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:34,719 INFO L85 PathProgramCache]: Analyzing trace with hash -732796761, now seen corresponding path program 1 times [2023-11-29 02:40:34,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:34,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093821536] [2023-11-29 02:40:34,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:34,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:35,103 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:40:35,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:35,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093821536] [2023-11-29 02:40:35,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093821536] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:40:35,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518651322] [2023-11-29 02:40:35,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:35,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:40:35,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:40:35,105 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:40:35,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:40:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:35,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:40:35,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:40:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:40:35,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:40:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:40:37,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518651322] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:40:37,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:40:37,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-29 02:40:37,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527666724] [2023-11-29 02:40:37,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:40:37,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:40:37,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:37,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:40:37,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:40:37,839 INFO L87 Difference]: Start difference. First operand 79318 states and 87953 transitions. Second operand has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 6 states have internal predecessors, (731), 0 states have call successors, (0), 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 02:40:46,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:46,844 INFO L93 Difference]: Finished difference Result 195339 states and 215637 transitions. [2023-11-29 02:40:46,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:40:46,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 6 states have internal predecessors, (731), 0 states have call successors, (0), 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 339 [2023-11-29 02:40:46,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:46,942 INFO L225 Difference]: With dead ends: 195339 [2023-11-29 02:40:46,942 INFO L226 Difference]: Without dead ends: 113464 [2023-11-29 02:40:46,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:40:46,962 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 1845 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 7475 mSolverCounterSat, 927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 8402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 7475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:40:46,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1845 Valid, 278 Invalid, 8402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [927 Valid, 7475 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-11-29 02:40:47,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113464 states. [2023-11-29 02:40:48,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113464 to 97182. [2023-11-29 02:40:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97182 states, 97181 states have (on average 1.0952861155987281) internal successors, (106441), 97181 states have internal predecessors, (106441), 0 states have call successors, (0), 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 02:40:48,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97182 states to 97182 states and 106441 transitions. [2023-11-29 02:40:48,164 INFO L78 Accepts]: Start accepts. Automaton has 97182 states and 106441 transitions. Word has length 339 [2023-11-29 02:40:48,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:48,165 INFO L495 AbstractCegarLoop]: Abstraction has 97182 states and 106441 transitions. [2023-11-29 02:40:48,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 6 states have internal predecessors, (731), 0 states have call successors, (0), 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 02:40:48,165 INFO L276 IsEmpty]: Start isEmpty. Operand 97182 states and 106441 transitions. [2023-11-29 02:40:48,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2023-11-29 02:40:48,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:48,170 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, 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, 3, 3, 3, 3, 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] [2023-11-29 02:40:48,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:40:48,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 02:40:48,371 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:48,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:48,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1205068660, now seen corresponding path program 1 times [2023-11-29 02:40:48,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:48,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028269090] [2023-11-29 02:40:48,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:48,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 418 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-11-29 02:40:48,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:48,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028269090] [2023-11-29 02:40:48,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028269090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:40:48,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:40:48,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:40:48,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915401795] [2023-11-29 02:40:48,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:48,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:40:48,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:48,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:40:48,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:40:48,686 INFO L87 Difference]: Start difference. First operand 97182 states and 106441 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 02:40:50,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:50,941 INFO L93 Difference]: Finished difference Result 199050 states and 218122 transitions. [2023-11-29 02:40:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:40:50,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 381 [2023-11-29 02:40:50,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:51,037 INFO L225 Difference]: With dead ends: 199050 [2023-11-29 02:40:51,037 INFO L226 Difference]: Without dead ends: 102294 [2023-11-29 02:40:51,074 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 02:40:51,075 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 405 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:40:51,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 726 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 02:40:51,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102294 states. [2023-11-29 02:40:52,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102294 to 89927. [2023-11-29 02:40:52,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89927 states, 89926 states have (on average 1.0939661499455107) internal successors, (98376), 89926 states have internal predecessors, (98376), 0 states have call successors, (0), 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 02:40:52,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89927 states to 89927 states and 98376 transitions. [2023-11-29 02:40:52,392 INFO L78 Accepts]: Start accepts. Automaton has 89927 states and 98376 transitions. Word has length 381 [2023-11-29 02:40:52,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:52,392 INFO L495 AbstractCegarLoop]: Abstraction has 89927 states and 98376 transitions. [2023-11-29 02:40:52,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 02:40:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand 89927 states and 98376 transitions. [2023-11-29 02:40:52,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2023-11-29 02:40:52,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:52,403 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 02:40:52,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 02:40:52,403 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:52,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:52,403 INFO L85 PathProgramCache]: Analyzing trace with hash -366180776, now seen corresponding path program 1 times [2023-11-29 02:40:52,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:52,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393394282] [2023-11-29 02:40:52,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:52,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:52,683 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2023-11-29 02:40:52,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:52,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393394282] [2023-11-29 02:40:52,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393394282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:40:52,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:40:52,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:40:52,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462978510] [2023-11-29 02:40:52,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:52,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:40:52,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:52,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:40:52,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:40:52,686 INFO L87 Difference]: Start difference. First operand 89927 states and 98376 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 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 02:40:54,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:54,142 INFO L93 Difference]: Finished difference Result 177715 states and 194413 transitions. [2023-11-29 02:40:54,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:40:54,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 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 432 [2023-11-29 02:40:54,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:54,216 INFO L225 Difference]: With dead ends: 177715 [2023-11-29 02:40:54,216 INFO L226 Difference]: Without dead ends: 88213 [2023-11-29 02:40:54,248 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 02:40:54,248 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 616 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:40:54,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 93 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 02:40:54,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88213 states. [2023-11-29 02:40:55,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88213 to 88204. [2023-11-29 02:40:55,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88204 states, 88203 states have (on average 1.0933301588381348) internal successors, (96435), 88203 states have internal predecessors, (96435), 0 states have call successors, (0), 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 02:40:55,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88204 states to 88204 states and 96435 transitions. [2023-11-29 02:40:55,300 INFO L78 Accepts]: Start accepts. Automaton has 88204 states and 96435 transitions. Word has length 432 [2023-11-29 02:40:55,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:55,301 INFO L495 AbstractCegarLoop]: Abstraction has 88204 states and 96435 transitions. [2023-11-29 02:40:55,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 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 02:40:55,301 INFO L276 IsEmpty]: Start isEmpty. Operand 88204 states and 96435 transitions. [2023-11-29 02:40:55,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-11-29 02:40:55,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:55,308 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, 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, 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, 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 02:40:55,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 02:40:55,308 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:55,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:55,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1053438296, now seen corresponding path program 1 times [2023-11-29 02:40:55,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:55,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817363886] [2023-11-29 02:40:55,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:55,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 370 proven. 52 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-11-29 02:40:56,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:56,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817363886] [2023-11-29 02:40:56,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817363886] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:40:56,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762356812] [2023-11-29 02:40:56,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:56,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:40:56,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:40:56,162 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:40:56,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:40:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:56,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:40:56,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:40:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 433 proven. 82 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-11-29 02:40:56,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:40:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 433 proven. 82 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-11-29 02:40:57,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762356812] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:40:57,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:40:57,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2023-11-29 02:40:57,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737162233] [2023-11-29 02:40:57,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:40:57,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:40:57,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:57,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:40:57,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:40:57,760 INFO L87 Difference]: Start difference. First operand 88204 states and 96435 transitions. Second operand has 9 states, 9 states have (on average 82.88888888888889) internal successors, (746), 9 states have internal predecessors, (746), 0 states have call successors, (0), 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 02:41:13,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:13,645 INFO L93 Difference]: Finished difference Result 220725 states and 240666 transitions. [2023-11-29 02:41:13,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 02:41:13,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 82.88888888888889) internal successors, (746), 9 states have internal predecessors, (746), 0 states have call successors, (0), 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 433 [2023-11-29 02:41:13,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:13,762 INFO L225 Difference]: With dead ends: 220725 [2023-11-29 02:41:13,762 INFO L226 Difference]: Without dead ends: 131245 [2023-11-29 02:41:13,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2023-11-29 02:41:13,799 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 8942 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 14773 mSolverCounterSat, 2380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8942 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 17153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2380 IncrementalHoareTripleChecker+Valid, 14773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:13,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8942 Valid, 438 Invalid, 17153 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2380 Valid, 14773 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2023-11-29 02:41:13,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131245 states. [2023-11-29 02:41:15,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131245 to 106493. [2023-11-29 02:41:15,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106493 states, 106492 states have (on average 1.08518010742591) internal successors, (115563), 106492 states have internal predecessors, (115563), 0 states have call successors, (0), 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 02:41:15,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106493 states to 106493 states and 115563 transitions. [2023-11-29 02:41:15,224 INFO L78 Accepts]: Start accepts. Automaton has 106493 states and 115563 transitions. Word has length 433 [2023-11-29 02:41:15,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:15,225 INFO L495 AbstractCegarLoop]: Abstraction has 106493 states and 115563 transitions. [2023-11-29 02:41:15,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 82.88888888888889) internal successors, (746), 9 states have internal predecessors, (746), 0 states have call successors, (0), 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 02:41:15,225 INFO L276 IsEmpty]: Start isEmpty. Operand 106493 states and 115563 transitions. [2023-11-29 02:41:15,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-11-29 02:41:15,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:15,235 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:15,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 02:41:15,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 02:41:15,435 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:15,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:15,436 INFO L85 PathProgramCache]: Analyzing trace with hash -2108734583, now seen corresponding path program 1 times [2023-11-29 02:41:15,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:15,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722851385] [2023-11-29 02:41:15,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:15,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-29 02:41:15,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:15,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722851385] [2023-11-29 02:41:15,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722851385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:15,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:15,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:41:15,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323361840] [2023-11-29 02:41:15,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:15,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:41:15,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:15,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:41:15,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:41:15,990 INFO L87 Difference]: Start difference. First operand 106493 states and 115563 transitions. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 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 02:41:18,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:18,101 INFO L93 Difference]: Finished difference Result 208728 states and 226572 transitions. [2023-11-29 02:41:18,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:41:18,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 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 522 [2023-11-29 02:41:18,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:18,191 INFO L225 Difference]: With dead ends: 208728 [2023-11-29 02:41:18,192 INFO L226 Difference]: Without dead ends: 103086 [2023-11-29 02:41:18,227 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 02:41:18,227 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 404 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:18,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 660 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:41:18,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103086 states. [2023-11-29 02:41:19,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103086 to 102230. [2023-11-29 02:41:19,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102230 states, 102229 states have (on average 1.0784611020356258) internal successors, (110250), 102229 states have internal predecessors, (110250), 0 states have call successors, (0), 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 02:41:19,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102230 states to 102230 states and 110250 transitions. [2023-11-29 02:41:19,698 INFO L78 Accepts]: Start accepts. Automaton has 102230 states and 110250 transitions. Word has length 522 [2023-11-29 02:41:19,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:19,698 INFO L495 AbstractCegarLoop]: Abstraction has 102230 states and 110250 transitions. [2023-11-29 02:41:19,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 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 02:41:19,699 INFO L276 IsEmpty]: Start isEmpty. Operand 102230 states and 110250 transitions. [2023-11-29 02:41:19,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2023-11-29 02:41:19,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:19,708 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:19,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 02:41:19,709 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:19,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:19,709 INFO L85 PathProgramCache]: Analyzing trace with hash 486092691, now seen corresponding path program 1 times [2023-11-29 02:41:19,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:19,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902367897] [2023-11-29 02:41:19,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:19,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:20,221 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-29 02:41:20,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:20,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902367897] [2023-11-29 02:41:20,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902367897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:20,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:20,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:41:20,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194725200] [2023-11-29 02:41:20,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:20,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:41:20,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:20,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:41:20,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:41:20,225 INFO L87 Difference]: Start difference. First operand 102230 states and 110250 transitions. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 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 02:41:22,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:22,419 INFO L93 Difference]: Finished difference Result 208734 states and 225181 transitions. [2023-11-29 02:41:22,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:41:22,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 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 549 [2023-11-29 02:41:22,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:22,509 INFO L225 Difference]: With dead ends: 208734 [2023-11-29 02:41:22,509 INFO L226 Difference]: Without dead ends: 106930 [2023-11-29 02:41:22,541 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 02:41:22,542 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 398 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:22,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 220 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 02:41:22,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106930 states. [2023-11-29 02:41:23,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106930 to 97124. [2023-11-29 02:41:23,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97124 states, 97123 states have (on average 1.0780350689332083) internal successors, (104702), 97123 states have internal predecessors, (104702), 0 states have call successors, (0), 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 02:41:23,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97124 states to 97124 states and 104702 transitions. [2023-11-29 02:41:23,633 INFO L78 Accepts]: Start accepts. Automaton has 97124 states and 104702 transitions. Word has length 549 [2023-11-29 02:41:23,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:23,634 INFO L495 AbstractCegarLoop]: Abstraction has 97124 states and 104702 transitions. [2023-11-29 02:41:23,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 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 02:41:23,634 INFO L276 IsEmpty]: Start isEmpty. Operand 97124 states and 104702 transitions. [2023-11-29 02:41:23,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2023-11-29 02:41:23,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:23,647 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 02:41:23,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 02:41:23,647 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:23,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:23,648 INFO L85 PathProgramCache]: Analyzing trace with hash 649383766, now seen corresponding path program 1 times [2023-11-29 02:41:23,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:23,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852557976] [2023-11-29 02:41:23,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:23,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 827 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-29 02:41:24,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:24,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852557976] [2023-11-29 02:41:24,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852557976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:24,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:24,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:41:24,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996643868] [2023-11-29 02:41:24,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:24,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:41:24,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:24,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:41:24,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:41:24,035 INFO L87 Difference]: Start difference. First operand 97124 states and 104702 transitions. Second operand has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 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 02:41:27,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:27,709 INFO L93 Difference]: Finished difference Result 218098 states and 235251 transitions. [2023-11-29 02:41:27,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:41:27,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 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 593 [2023-11-29 02:41:27,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:27,803 INFO L225 Difference]: With dead ends: 218098 [2023-11-29 02:41:27,803 INFO L226 Difference]: Without dead ends: 121825 [2023-11-29 02:41:27,822 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 02:41:27,823 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 743 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 2284 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:27,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 164 Invalid, 2735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2284 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 02:41:27,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121825 states. [2023-11-29 02:41:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121825 to 116717. [2023-11-29 02:41:29,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116717 states, 116716 states have (on average 1.074274306864526) internal successors, (125385), 116716 states have internal predecessors, (125385), 0 states have call successors, (0), 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 02:41:29,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116717 states to 116717 states and 125385 transitions. [2023-11-29 02:41:29,471 INFO L78 Accepts]: Start accepts. Automaton has 116717 states and 125385 transitions. Word has length 593 [2023-11-29 02:41:29,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:29,472 INFO L495 AbstractCegarLoop]: Abstraction has 116717 states and 125385 transitions. [2023-11-29 02:41:29,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 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 02:41:29,472 INFO L276 IsEmpty]: Start isEmpty. Operand 116717 states and 125385 transitions. [2023-11-29 02:41:29,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-11-29 02:41:29,482 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:29,482 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:29,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 02:41:29,483 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:29,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:29,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1558855070, now seen corresponding path program 1 times [2023-11-29 02:41:29,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:29,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767302885] [2023-11-29 02:41:29,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:29,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 465 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-29 02:41:29,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:29,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767302885] [2023-11-29 02:41:29,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767302885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:29,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:29,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:41:29,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581445260] [2023-11-29 02:41:29,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:29,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:41:29,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:29,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:41:29,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:41:29,715 INFO L87 Difference]: Start difference. First operand 116717 states and 125385 transitions. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 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 02:41:32,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:32,048 INFO L93 Difference]: Finished difference Result 235977 states and 253226 transitions. [2023-11-29 02:41:32,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:41:32,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 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 605 [2023-11-29 02:41:32,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:32,159 INFO L225 Difference]: With dead ends: 235977 [2023-11-29 02:41:32,159 INFO L226 Difference]: Without dead ends: 120111 [2023-11-29 02:41:32,199 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 02:41:32,199 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 495 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:32,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 616 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 02:41:32,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120111 states. [2023-11-29 02:41:33,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120111 to 117982. [2023-11-29 02:41:33,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117982 states, 117981 states have (on average 1.0671972605758555) internal successors, (125909), 117981 states have internal predecessors, (125909), 0 states have call successors, (0), 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 02:41:33,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117982 states to 117982 states and 125909 transitions. [2023-11-29 02:41:33,714 INFO L78 Accepts]: Start accepts. Automaton has 117982 states and 125909 transitions. Word has length 605 [2023-11-29 02:41:33,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:33,715 INFO L495 AbstractCegarLoop]: Abstraction has 117982 states and 125909 transitions. [2023-11-29 02:41:33,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 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 02:41:33,715 INFO L276 IsEmpty]: Start isEmpty. Operand 117982 states and 125909 transitions. [2023-11-29 02:41:33,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-11-29 02:41:33,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:33,723 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:33,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 02:41:33,723 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:33,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:33,724 INFO L85 PathProgramCache]: Analyzing trace with hash -921692160, now seen corresponding path program 1 times [2023-11-29 02:41:33,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:33,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349998232] [2023-11-29 02:41:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:33,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:34,272 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 651 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-11-29 02:41:34,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:34,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349998232] [2023-11-29 02:41:34,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349998232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:34,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:34,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:41:34,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625383552] [2023-11-29 02:41:34,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:34,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:41:34,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:34,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:41:34,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:41:34,274 INFO L87 Difference]: Start difference. First operand 117982 states and 125909 transitions. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 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 02:41:36,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:36,446 INFO L93 Difference]: Finished difference Result 241925 states and 258220 transitions. [2023-11-29 02:41:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:41:36,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 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 605 [2023-11-29 02:41:36,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:36,555 INFO L225 Difference]: With dead ends: 241925 [2023-11-29 02:41:36,555 INFO L226 Difference]: Without dead ends: 124369 [2023-11-29 02:41:36,597 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 02:41:36,597 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 292 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:36,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 270 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:41:36,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124369 states. [2023-11-29 02:41:37,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124369 to 110323. [2023-11-29 02:41:38,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110323 states, 110322 states have (on average 1.0659977157774514) internal successors, (117603), 110322 states have internal predecessors, (117603), 0 states have call successors, (0), 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 02:41:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110323 states to 110323 states and 117603 transitions. [2023-11-29 02:41:38,167 INFO L78 Accepts]: Start accepts. Automaton has 110323 states and 117603 transitions. Word has length 605 [2023-11-29 02:41:38,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:38,167 INFO L495 AbstractCegarLoop]: Abstraction has 110323 states and 117603 transitions. [2023-11-29 02:41:38,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 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 02:41:38,167 INFO L276 IsEmpty]: Start isEmpty. Operand 110323 states and 117603 transitions. [2023-11-29 02:41:38,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2023-11-29 02:41:38,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:38,175 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 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] [2023-11-29 02:41:38,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 02:41:38,175 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:38,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:38,175 INFO L85 PathProgramCache]: Analyzing trace with hash 936881062, now seen corresponding path program 1 times [2023-11-29 02:41:38,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:38,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402284263] [2023-11-29 02:41:38,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:38,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 613 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2023-11-29 02:41:39,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:39,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402284263] [2023-11-29 02:41:39,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402284263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:39,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:39,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:41:39,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084670388] [2023-11-29 02:41:39,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:39,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:41:39,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:39,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:41:39,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:41:39,280 INFO L87 Difference]: Start difference. First operand 110323 states and 117603 transitions. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 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 02:41:43,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:43,148 INFO L93 Difference]: Finished difference Result 239822 states and 255054 transitions. [2023-11-29 02:41:43,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:41:43,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 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 620 [2023-11-29 02:41:43,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:43,264 INFO L225 Difference]: With dead ends: 239822 [2023-11-29 02:41:43,264 INFO L226 Difference]: Without dead ends: 129075 [2023-11-29 02:41:43,302 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 02:41:43,302 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 776 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 2443 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 2443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:43,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 176 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 2443 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 02:41:43,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129075 states. [2023-11-29 02:41:44,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129075 to 114154. [2023-11-29 02:41:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114154 states, 114153 states have (on average 1.064921640254746) internal successors, (121564), 114153 states have internal predecessors, (121564), 0 states have call successors, (0), 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 02:41:44,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114154 states to 114154 states and 121564 transitions. [2023-11-29 02:41:44,913 INFO L78 Accepts]: Start accepts. Automaton has 114154 states and 121564 transitions. Word has length 620 [2023-11-29 02:41:44,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:44,914 INFO L495 AbstractCegarLoop]: Abstraction has 114154 states and 121564 transitions. [2023-11-29 02:41:44,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 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 02:41:44,914 INFO L276 IsEmpty]: Start isEmpty. Operand 114154 states and 121564 transitions. [2023-11-29 02:41:44,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2023-11-29 02:41:44,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:44,924 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:44,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 02:41:44,924 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:44,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:44,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1612774919, now seen corresponding path program 1 times [2023-11-29 02:41:44,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:44,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674075990] [2023-11-29 02:41:44,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:44,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:45,470 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2023-11-29 02:41:45,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:45,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674075990] [2023-11-29 02:41:45,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674075990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:45,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:45,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:41:45,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254725294] [2023-11-29 02:41:45,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:45,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:41:45,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:45,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:41:45,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:41:45,473 INFO L87 Difference]: Start difference. First operand 114154 states and 121564 transitions. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 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 02:41:47,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:47,504 INFO L93 Difference]: Finished difference Result 224476 states and 239016 transitions. [2023-11-29 02:41:47,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:41:47,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 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 651 [2023-11-29 02:41:47,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:47,609 INFO L225 Difference]: With dead ends: 224476 [2023-11-29 02:41:47,609 INFO L226 Difference]: Without dead ends: 110748 [2023-11-29 02:41:47,836 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 02:41:47,836 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 411 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:47,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 672 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:41:47,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110748 states. [2023-11-29 02:41:48,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110748 to 103086. [2023-11-29 02:41:49,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103086 states, 103085 states have (on average 1.060697482659941) internal successors, (109342), 103085 states have internal predecessors, (109342), 0 states have call successors, (0), 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 02:41:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103086 states to 103086 states and 109342 transitions. [2023-11-29 02:41:49,201 INFO L78 Accepts]: Start accepts. Automaton has 103086 states and 109342 transitions. Word has length 651 [2023-11-29 02:41:49,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:49,202 INFO L495 AbstractCegarLoop]: Abstraction has 103086 states and 109342 transitions. [2023-11-29 02:41:49,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 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 02:41:49,202 INFO L276 IsEmpty]: Start isEmpty. Operand 103086 states and 109342 transitions. [2023-11-29 02:41:49,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-29 02:41:49,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:49,230 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 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, 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 02:41:49,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 02:41:49,230 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:49,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:49,231 INFO L85 PathProgramCache]: Analyzing trace with hash -984408284, now seen corresponding path program 1 times [2023-11-29 02:41:49,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:49,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346446006] [2023-11-29 02:41:49,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:49,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:50,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1222 backedges. 917 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-11-29 02:41:50,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:50,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346446006] [2023-11-29 02:41:50,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346446006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:50,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:50,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:41:50,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678476022] [2023-11-29 02:41:50,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:50,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:41:50,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:50,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:41:50,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:41:50,069 INFO L87 Difference]: Start difference. First operand 103086 states and 109342 transitions. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 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 02:41:54,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:54,052 INFO L93 Difference]: Finished difference Result 226182 states and 240165 transitions. [2023-11-29 02:41:54,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:41:54,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 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 685 [2023-11-29 02:41:54,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:54,161 INFO L225 Difference]: With dead ends: 226182 [2023-11-29 02:41:54,161 INFO L226 Difference]: Without dead ends: 123522 [2023-11-29 02:41:54,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:41:54,201 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 1580 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 2609 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 3256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 2609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:54,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 141 Invalid, 3256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2609 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 02:41:54,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123522 states. [2023-11-29 02:41:55,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123522 to 100946. [2023-11-29 02:41:55,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100946 states, 100945 states have (on average 1.0526326217247015) internal successors, (106258), 100945 states have internal predecessors, (106258), 0 states have call successors, (0), 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 02:41:55,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100946 states to 100946 states and 106258 transitions. [2023-11-29 02:41:55,592 INFO L78 Accepts]: Start accepts. Automaton has 100946 states and 106258 transitions. Word has length 685 [2023-11-29 02:41:55,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:55,592 INFO L495 AbstractCegarLoop]: Abstraction has 100946 states and 106258 transitions. [2023-11-29 02:41:55,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 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 02:41:55,593 INFO L276 IsEmpty]: Start isEmpty. Operand 100946 states and 106258 transitions. [2023-11-29 02:41:55,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-11-29 02:41:55,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:55,612 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:55,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 02:41:55,612 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:55,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:55,613 INFO L85 PathProgramCache]: Analyzing trace with hash 274370320, now seen corresponding path program 1 times [2023-11-29 02:41:55,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:55,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182629198] [2023-11-29 02:41:55,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:55,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 832 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2023-11-29 02:41:56,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:56,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182629198] [2023-11-29 02:41:56,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182629198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:56,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:56,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:41:56,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807600013] [2023-11-29 02:41:56,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:56,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:41:56,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:56,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:41:56,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:41:56,231 INFO L87 Difference]: Start difference. First operand 100946 states and 106258 transitions. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 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 02:41:58,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:58,720 INFO L93 Difference]: Finished difference Result 210844 states and 221860 transitions. [2023-11-29 02:41:58,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:41:58,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 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 705 [2023-11-29 02:41:58,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:58,824 INFO L225 Difference]: With dead ends: 210844 [2023-11-29 02:41:58,824 INFO L226 Difference]: Without dead ends: 109897 [2023-11-29 02:41:58,867 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 02:41:58,868 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 170 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:58,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 669 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 02:41:58,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109897 states. [2023-11-29 02:42:00,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109897 to 109027. [2023-11-29 02:42:00,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109027 states, 109026 states have (on average 1.0487039788674262) internal successors, (114336), 109026 states have internal predecessors, (114336), 0 states have call successors, (0), 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 02:42:00,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109027 states to 109027 states and 114336 transitions. [2023-11-29 02:42:00,259 INFO L78 Accepts]: Start accepts. Automaton has 109027 states and 114336 transitions. Word has length 705 [2023-11-29 02:42:00,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:00,260 INFO L495 AbstractCegarLoop]: Abstraction has 109027 states and 114336 transitions. [2023-11-29 02:42:00,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 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 02:42:00,260 INFO L276 IsEmpty]: Start isEmpty. Operand 109027 states and 114336 transitions. [2023-11-29 02:42:00,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2023-11-29 02:42:00,270 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:00,270 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 02:42:00,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 02:42:00,270 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:00,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:00,271 INFO L85 PathProgramCache]: Analyzing trace with hash -551652975, now seen corresponding path program 1 times [2023-11-29 02:42:00,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:00,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657043491] [2023-11-29 02:42:00,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:00,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 698 proven. 0 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2023-11-29 02:42:01,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:01,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657043491] [2023-11-29 02:42:01,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657043491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:42:01,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:42:01,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:42:01,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594947958] [2023-11-29 02:42:01,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:01,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:42:01,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:01,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:42:01,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:42:01,195 INFO L87 Difference]: Start difference. First operand 109027 states and 114336 transitions. Second operand has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 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 02:42:04,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:04,599 INFO L93 Difference]: Finished difference Result 216338 states and 226256 transitions. [2023-11-29 02:42:04,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:42:04,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 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 712 [2023-11-29 02:42:04,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:04,685 INFO L225 Difference]: With dead ends: 216338 [2023-11-29 02:42:04,685 INFO L226 Difference]: Without dead ends: 107737 [2023-11-29 02:42:04,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:42:04,710 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 688 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:04,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 290 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 02:42:04,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107737 states. [2023-11-29 02:42:05,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107737 to 102195. [2023-11-29 02:42:05,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102195 states, 102194 states have (on average 1.0435250601796584) internal successors, (106642), 102194 states have internal predecessors, (106642), 0 states have call successors, (0), 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 02:42:05,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102195 states to 102195 states and 106642 transitions. [2023-11-29 02:42:05,840 INFO L78 Accepts]: Start accepts. Automaton has 102195 states and 106642 transitions. Word has length 712 [2023-11-29 02:42:05,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:05,841 INFO L495 AbstractCegarLoop]: Abstraction has 102195 states and 106642 transitions. [2023-11-29 02:42:05,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 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 02:42:05,841 INFO L276 IsEmpty]: Start isEmpty. Operand 102195 states and 106642 transitions. [2023-11-29 02:42:05,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2023-11-29 02:42:05,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:05,853 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:05,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 02:42:05,853 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:05,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:05,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1605639357, now seen corresponding path program 1 times [2023-11-29 02:42:05,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:05,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235762967] [2023-11-29 02:42:05,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:05,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 775 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2023-11-29 02:42:06,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:06,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235762967] [2023-11-29 02:42:06,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235762967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:42:06,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:42:06,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:42:06,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075361259] [2023-11-29 02:42:06,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:06,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:42:06,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:06,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:42:06,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:42:06,856 INFO L87 Difference]: Start difference. First operand 102195 states and 106642 transitions. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 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 02:42:08,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:08,963 INFO L93 Difference]: Finished difference Result 203966 states and 212858 transitions. [2023-11-29 02:42:08,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:42:08,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 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 742 [2023-11-29 02:42:08,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:09,054 INFO L225 Difference]: With dead ends: 203966 [2023-11-29 02:42:09,054 INFO L226 Difference]: Without dead ends: 102197 [2023-11-29 02:42:09,091 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 02:42:09,092 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 94 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:09,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 732 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 02:42:09,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102197 states. [2023-11-29 02:42:10,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102197 to 101770. [2023-11-29 02:42:10,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101770 states, 101769 states have (on average 1.043412040994802) internal successors, (106187), 101769 states have internal predecessors, (106187), 0 states have call successors, (0), 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 02:42:10,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101770 states to 101770 states and 106187 transitions. [2023-11-29 02:42:10,206 INFO L78 Accepts]: Start accepts. Automaton has 101770 states and 106187 transitions. Word has length 742 [2023-11-29 02:42:10,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:10,206 INFO L495 AbstractCegarLoop]: Abstraction has 101770 states and 106187 transitions. [2023-11-29 02:42:10,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 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 02:42:10,206 INFO L276 IsEmpty]: Start isEmpty. Operand 101770 states and 106187 transitions. [2023-11-29 02:42:10,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2023-11-29 02:42:10,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:10,218 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, 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, 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, 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, 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 02:42:10,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 02:42:10,219 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:10,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:10,219 INFO L85 PathProgramCache]: Analyzing trace with hash 801194215, now seen corresponding path program 1 times [2023-11-29 02:42:10,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:10,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2947590] [2023-11-29 02:42:10,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:10,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:11,004 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 581 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-29 02:42:11,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:11,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2947590] [2023-11-29 02:42:11,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2947590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:42:11,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:42:11,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:42:11,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857639945] [2023-11-29 02:42:11,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:11,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:42:11,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:11,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:42:11,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:42:11,007 INFO L87 Difference]: Start difference. First operand 101770 states and 106187 transitions. Second operand has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 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 02:42:14,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:14,439 INFO L93 Difference]: Finished difference Result 215896 states and 225009 transitions. [2023-11-29 02:42:14,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:42:14,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 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 758 [2023-11-29 02:42:14,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:14,541 INFO L225 Difference]: With dead ends: 215896 [2023-11-29 02:42:14,541 INFO L226 Difference]: Without dead ends: 114127 [2023-11-29 02:42:14,580 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 02:42:14,580 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 681 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 2652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:14,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 87 Invalid, 2652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 2270 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 02:42:14,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114127 states. [2023-11-29 02:42:15,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114127 to 98358. [2023-11-29 02:42:15,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98358 states, 98357 states have (on average 1.0436369551735005) internal successors, (102649), 98357 states have internal predecessors, (102649), 0 states have call successors, (0), 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 02:42:15,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98358 states to 98358 states and 102649 transitions. [2023-11-29 02:42:15,919 INFO L78 Accepts]: Start accepts. Automaton has 98358 states and 102649 transitions. Word has length 758 [2023-11-29 02:42:15,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:15,920 INFO L495 AbstractCegarLoop]: Abstraction has 98358 states and 102649 transitions. [2023-11-29 02:42:15,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 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 02:42:15,920 INFO L276 IsEmpty]: Start isEmpty. Operand 98358 states and 102649 transitions. [2023-11-29 02:42:15,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2023-11-29 02:42:15,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:15,933 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, 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, 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, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:42:15,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 02:42:15,933 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:15,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:15,933 INFO L85 PathProgramCache]: Analyzing trace with hash -25925634, now seen corresponding path program 1 times [2023-11-29 02:42:15,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:15,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783966186] [2023-11-29 02:42:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:15,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:16,422 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 588 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-29 02:42:16,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:16,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783966186] [2023-11-29 02:42:16,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783966186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:42:16,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:42:16,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:42:16,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340005042] [2023-11-29 02:42:16,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:16,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:42:16,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:16,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:42:16,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:42:16,424 INFO L87 Difference]: Start difference. First operand 98358 states and 102649 transitions. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 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 02:42:18,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:18,732 INFO L93 Difference]: Finished difference Result 199697 states and 208416 transitions. [2023-11-29 02:42:18,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:42:18,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 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 765 [2023-11-29 02:42:18,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:18,835 INFO L225 Difference]: With dead ends: 199697 [2023-11-29 02:42:18,835 INFO L226 Difference]: Without dead ends: 101765 [2023-11-29 02:42:18,878 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 02:42:18,878 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 221 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:18,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 730 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 02:42:18,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101765 states. [2023-11-29 02:42:19,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101765 to 100486. [2023-11-29 02:42:19,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100486 states, 100485 states have (on average 1.0429218291287257) internal successors, (104798), 100485 states have internal predecessors, (104798), 0 states have call successors, (0), 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 02:42:20,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100486 states to 100486 states and 104798 transitions. [2023-11-29 02:42:20,090 INFO L78 Accepts]: Start accepts. Automaton has 100486 states and 104798 transitions. Word has length 765 [2023-11-29 02:42:20,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:20,090 INFO L495 AbstractCegarLoop]: Abstraction has 100486 states and 104798 transitions. [2023-11-29 02:42:20,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 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 02:42:20,091 INFO L276 IsEmpty]: Start isEmpty. Operand 100486 states and 104798 transitions. [2023-11-29 02:42:20,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2023-11-29 02:42:20,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:20,105 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:20,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 02:42:20,105 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:20,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:20,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1829545250, now seen corresponding path program 1 times [2023-11-29 02:42:20,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:20,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911241612] [2023-11-29 02:42:20,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:20,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1299 backedges. 900 proven. 94 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-11-29 02:42:21,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:21,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911241612] [2023-11-29 02:42:21,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911241612] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:42:21,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065865389] [2023-11-29 02:42:21,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:21,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:42:21,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:42:21,108 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:42:21,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:42:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:21,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:42:21,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:42:21,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1299 backedges. 994 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-11-29 02:42:21,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:42:21,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065865389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:42:21,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:42:21,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-29 02:42:21,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31087031] [2023-11-29 02:42:21,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:21,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:42:21,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:21,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:42:21,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:42:21,881 INFO L87 Difference]: Start difference. First operand 100486 states and 104798 transitions. Second operand has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 0 states have call successors, (0), 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 02:42:25,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:25,532 INFO L93 Difference]: Finished difference Result 206091 states and 214835 transitions. [2023-11-29 02:42:25,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:42:25,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 0 states have call successors, (0), 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 797 [2023-11-29 02:42:25,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:25,620 INFO L225 Difference]: With dead ends: 206091 [2023-11-29 02:42:25,620 INFO L226 Difference]: Without dead ends: 106031 [2023-11-29 02:42:25,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:42:25,758 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 1058 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 3154 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 3556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 3154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:25,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 152 Invalid, 3556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 3154 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 02:42:25,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106031 states. [2023-11-29 02:42:26,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106031 to 100486. [2023-11-29 02:42:26,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100486 states, 100485 states have (on average 1.042882022192367) internal successors, (104794), 100485 states have internal predecessors, (104794), 0 states have call successors, (0), 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 02:42:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100486 states to 100486 states and 104794 transitions. [2023-11-29 02:42:26,855 INFO L78 Accepts]: Start accepts. Automaton has 100486 states and 104794 transitions. Word has length 797 [2023-11-29 02:42:26,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:26,856 INFO L495 AbstractCegarLoop]: Abstraction has 100486 states and 104794 transitions. [2023-11-29 02:42:26,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 0 states have call successors, (0), 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 02:42:26,856 INFO L276 IsEmpty]: Start isEmpty. Operand 100486 states and 104794 transitions. [2023-11-29 02:42:26,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2023-11-29 02:42:26,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:26,869 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:26,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:42:27,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 02:42:27,070 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:27,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:27,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1455665777, now seen corresponding path program 1 times [2023-11-29 02:42:27,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:27,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196329644] [2023-11-29 02:42:27,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:27,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 911 proven. 43 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 02:42:28,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:28,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196329644] [2023-11-29 02:42:28,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196329644] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:42:28,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594940815] [2023-11-29 02:42:28,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:28,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:42:28,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:42:28,728 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:42:28,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:42:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:29,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 02:42:29,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:42:31,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 622 proven. 332 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 02:42:31,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:42:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 786 proven. 168 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 02:42:33,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594940815] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:42:33,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:42:33,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-11-29 02:42:33,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178626510] [2023-11-29 02:42:33,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:42:33,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 02:42:33,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:33,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 02:42:33,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:42:33,973 INFO L87 Difference]: Start difference. First operand 100486 states and 104794 transitions. Second operand has 16 states, 16 states have (on average 114.0625) internal successors, (1825), 16 states have internal predecessors, (1825), 0 states have call successors, (0), 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 02:42:46,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:46,031 INFO L93 Difference]: Finished difference Result 219487 states and 228743 transitions. [2023-11-29 02:42:46,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 02:42:46,031 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 114.0625) internal successors, (1825), 16 states have internal predecessors, (1825), 0 states have call successors, (0), 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 806 [2023-11-29 02:42:46,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:46,128 INFO L225 Difference]: With dead ends: 219487 [2023-11-29 02:42:46,128 INFO L226 Difference]: Without dead ends: 119427 [2023-11-29 02:42:46,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1644 GetRequests, 1613 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=260, Invalid=796, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 02:42:46,164 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 9414 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 16152 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9414 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 16736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 16152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:46,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9414 Valid, 414 Invalid, 16736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 16152 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2023-11-29 02:42:46,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119427 states. [2023-11-29 02:42:47,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119427 to 88978. [2023-11-29 02:42:47,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88978 states, 88977 states have (on average 1.036447621295391) internal successors, (92220), 88977 states have internal predecessors, (92220), 0 states have call successors, (0), 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 02:42:47,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88978 states to 88978 states and 92220 transitions. [2023-11-29 02:42:47,253 INFO L78 Accepts]: Start accepts. Automaton has 88978 states and 92220 transitions. Word has length 806 [2023-11-29 02:42:47,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:47,254 INFO L495 AbstractCegarLoop]: Abstraction has 88978 states and 92220 transitions. [2023-11-29 02:42:47,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 114.0625) internal successors, (1825), 16 states have internal predecessors, (1825), 0 states have call successors, (0), 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 02:42:47,254 INFO L276 IsEmpty]: Start isEmpty. Operand 88978 states and 92220 transitions. [2023-11-29 02:42:47,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2023-11-29 02:42:47,267 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:47,267 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:47,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:42:47,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:42:47,468 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:47,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:47,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1989559821, now seen corresponding path program 1 times [2023-11-29 02:42:47,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:47,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146048741] [2023-11-29 02:42:47,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:47,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:48,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1163 backedges. 611 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-11-29 02:42:48,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:48,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146048741] [2023-11-29 02:42:48,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146048741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:42:48,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:42:48,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:42:48,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130892937] [2023-11-29 02:42:48,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:48,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:42:48,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:48,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:42:48,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:42:48,177 INFO L87 Difference]: Start difference. First operand 88978 states and 92220 transitions. Second operand has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 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 02:42:51,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:51,438 INFO L93 Difference]: Finished difference Result 188615 states and 195265 transitions. [2023-11-29 02:42:51,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:42:51,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 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 859 [2023-11-29 02:42:51,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:51,525 INFO L225 Difference]: With dead ends: 188615 [2023-11-29 02:42:51,526 INFO L226 Difference]: Without dead ends: 99638 [2023-11-29 02:42:51,558 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 02:42:51,559 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 792 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 2559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:51,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 100 Invalid, 2559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 02:42:51,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99638 states. [2023-11-29 02:42:52,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99638 to 88128. [2023-11-29 02:42:52,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88128 states, 88127 states have (on average 1.0365722196375684) internal successors, (91350), 88127 states have internal predecessors, (91350), 0 states have call successors, (0), 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 02:42:52,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88128 states to 88128 states and 91350 transitions. [2023-11-29 02:42:52,616 INFO L78 Accepts]: Start accepts. Automaton has 88128 states and 91350 transitions. Word has length 859 [2023-11-29 02:42:52,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:52,617 INFO L495 AbstractCegarLoop]: Abstraction has 88128 states and 91350 transitions. [2023-11-29 02:42:52,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 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 02:42:52,617 INFO L276 IsEmpty]: Start isEmpty. Operand 88128 states and 91350 transitions. [2023-11-29 02:42:52,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 909 [2023-11-29 02:42:52,632 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:52,633 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:52,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-29 02:42:52,633 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:52,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:52,634 INFO L85 PathProgramCache]: Analyzing trace with hash -884091254, now seen corresponding path program 1 times [2023-11-29 02:42:52,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:52,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085009541] [2023-11-29 02:42:52,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:52,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1905 backedges. 1697 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-11-29 02:42:53,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:53,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085009541] [2023-11-29 02:42:53,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085009541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:42:53,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:42:53,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:42:53,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604590954] [2023-11-29 02:42:53,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:54,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:42:54,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:54,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:42:54,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:42:54,001 INFO L87 Difference]: Start difference. First operand 88128 states and 91350 transitions. Second operand has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 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 02:42:57,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:57,122 INFO L93 Difference]: Finished difference Result 192437 states and 199521 transitions. [2023-11-29 02:42:57,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:42:57,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 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 908 [2023-11-29 02:42:57,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:57,216 INFO L225 Difference]: With dead ends: 192437 [2023-11-29 02:42:57,216 INFO L226 Difference]: Without dead ends: 104735 [2023-11-29 02:42:57,249 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 02:42:57,250 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 626 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:57,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 115 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 02:42:57,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104735 states. [2023-11-29 02:42:58,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104735 to 96221. [2023-11-29 02:42:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96221 states, 96220 states have (on average 1.0361671170234878) internal successors, (99700), 96220 states have internal predecessors, (99700), 0 states have call successors, (0), 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 02:42:58,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96221 states to 96221 states and 99700 transitions. [2023-11-29 02:42:58,521 INFO L78 Accepts]: Start accepts. Automaton has 96221 states and 99700 transitions. Word has length 908 [2023-11-29 02:42:58,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:58,522 INFO L495 AbstractCegarLoop]: Abstraction has 96221 states and 99700 transitions. [2023-11-29 02:42:58,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 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 02:42:58,522 INFO L276 IsEmpty]: Start isEmpty. Operand 96221 states and 99700 transitions. [2023-11-29 02:42:58,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1002 [2023-11-29 02:42:58,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:58,545 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:58,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-29 02:42:58,545 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:58,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:58,546 INFO L85 PathProgramCache]: Analyzing trace with hash 748108272, now seen corresponding path program 1 times [2023-11-29 02:42:58,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:58,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581182960] [2023-11-29 02:42:58,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:58,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:59,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1972 backedges. 1557 proven. 186 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-29 02:42:59,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:59,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581182960] [2023-11-29 02:42:59,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581182960] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:42:59,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249469329] [2023-11-29 02:42:59,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:59,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:42:59,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:42:59,934 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:42:59,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:43:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:43:00,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 1197 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 02:43:00,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:43:04,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1972 backedges. 504 proven. 923 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2023-11-29 02:43:04,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:43:05,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1972 backedges. 995 proven. 0 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2023-11-29 02:43:05,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249469329] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:43:05,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:43:05,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 6] total 11 [2023-11-29 02:43:05,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482141046] [2023-11-29 02:43:05,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:43:05,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:43:05,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:43:05,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:43:05,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:43:05,747 INFO L87 Difference]: Start difference. First operand 96221 states and 99700 transitions. Second operand has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 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 02:43:08,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:43:08,877 INFO L93 Difference]: Finished difference Result 100502 states and 104044 transitions. [2023-11-29 02:43:08,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:43:08,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 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 1001 [2023-11-29 02:43:08,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:43:08,961 INFO L225 Difference]: With dead ends: 100502 [2023-11-29 02:43:08,961 INFO L226 Difference]: Without dead ends: 100075 [2023-11-29 02:43:08,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2005 GetRequests, 1996 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:43:08,979 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 664 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 2527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:43:08,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 98 Invalid, 2527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 02:43:09,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100075 states. [2023-11-29 02:43:09,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100075 to 96221. [2023-11-29 02:43:09,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96221 states, 96220 states have (on average 1.0360839742257326) internal successors, (99692), 96220 states have internal predecessors, (99692), 0 states have call successors, (0), 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 02:43:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96221 states to 96221 states and 99692 transitions. [2023-11-29 02:43:09,996 INFO L78 Accepts]: Start accepts. Automaton has 96221 states and 99692 transitions. Word has length 1001 [2023-11-29 02:43:09,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:43:09,996 INFO L495 AbstractCegarLoop]: Abstraction has 96221 states and 99692 transitions. [2023-11-29 02:43:09,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 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 02:43:09,997 INFO L276 IsEmpty]: Start isEmpty. Operand 96221 states and 99692 transitions. [2023-11-29 02:43:10,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2023-11-29 02:43:10,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:43:10,024 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 02:43:10,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 02:43:10,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:43:10,225 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:43:10,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:43:10,225 INFO L85 PathProgramCache]: Analyzing trace with hash -954798713, now seen corresponding path program 1 times [2023-11-29 02:43:10,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:43:10,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793246226] [2023-11-29 02:43:10,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:43:10,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:43:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:43:11,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 539 proven. 0 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2023-11-29 02:43:11,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:43:11,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793246226] [2023-11-29 02:43:11,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793246226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:43:11,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:43:11,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:43:11,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861410415] [2023-11-29 02:43:11,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:43:11,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:43:11,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:43:11,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:43:11,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:43:11,803 INFO L87 Difference]: Start difference. First operand 96221 states and 99692 transitions. Second operand has 4 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 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 02:43:14,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:43:14,923 INFO L93 Difference]: Finished difference Result 209919 states and 217301 transitions. [2023-11-29 02:43:14,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:43:14,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 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 1095 [2023-11-29 02:43:14,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:43:15,019 INFO L225 Difference]: With dead ends: 209919 [2023-11-29 02:43:15,019 INFO L226 Difference]: Without dead ends: 113699 [2023-11-29 02:43:15,054 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 02:43:15,055 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 810 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 2466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:43:15,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 193 Invalid, 2466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 2202 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 02:43:15,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113699 states. [2023-11-29 02:43:15,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113699 to 90696. [2023-11-29 02:43:16,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90696 states, 90695 states have (on average 1.0346987154749434) internal successors, (93842), 90695 states have internal predecessors, (93842), 0 states have call successors, (0), 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 02:43:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90696 states to 90696 states and 93842 transitions. [2023-11-29 02:43:16,103 INFO L78 Accepts]: Start accepts. Automaton has 90696 states and 93842 transitions. Word has length 1095 [2023-11-29 02:43:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:43:16,104 INFO L495 AbstractCegarLoop]: Abstraction has 90696 states and 93842 transitions. [2023-11-29 02:43:16,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 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 02:43:16,104 INFO L276 IsEmpty]: Start isEmpty. Operand 90696 states and 93842 transitions. [2023-11-29 02:43:16,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1140 [2023-11-29 02:43:16,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:43:16,132 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:43:16,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-29 02:43:16,132 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:43:16,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:43:16,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1509883318, now seen corresponding path program 1 times [2023-11-29 02:43:16,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:43:16,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491208557] [2023-11-29 02:43:16,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:43:16,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:43:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:43:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2023-11-29 02:43:17,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:43:17,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491208557] [2023-11-29 02:43:17,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491208557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:43:17,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:43:17,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:43:17,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134263331] [2023-11-29 02:43:17,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:43:17,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:43:17,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:43:17,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:43:17,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:43:17,261 INFO L87 Difference]: Start difference. First operand 90696 states and 93842 transitions. Second operand has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 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 02:43:20,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:43:20,715 INFO L93 Difference]: Finished difference Result 187366 states and 193685 transitions. [2023-11-29 02:43:20,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:43:20,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 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 1139 [2023-11-29 02:43:20,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:43:20,784 INFO L225 Difference]: With dead ends: 187366 [2023-11-29 02:43:20,784 INFO L226 Difference]: Without dead ends: 95819 [2023-11-29 02:43:20,805 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 02:43:20,805 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 848 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 2784 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:43:20,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 631 Invalid, 2927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2784 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 02:43:20,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95819 states. [2023-11-29 02:43:21,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95819 to 90687. [2023-11-29 02:43:21,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90687 states, 90686 states have (on average 1.0309198773790882) internal successors, (93490), 90686 states have internal predecessors, (93490), 0 states have call successors, (0), 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 02:43:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90687 states to 90687 states and 93490 transitions. [2023-11-29 02:43:21,848 INFO L78 Accepts]: Start accepts. Automaton has 90687 states and 93490 transitions. Word has length 1139 [2023-11-29 02:43:21,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:43:21,849 INFO L495 AbstractCegarLoop]: Abstraction has 90687 states and 93490 transitions. [2023-11-29 02:43:21,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 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 02:43:21,849 INFO L276 IsEmpty]: Start isEmpty. Operand 90687 states and 93490 transitions. [2023-11-29 02:43:21,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1152 [2023-11-29 02:43:21,878 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:43:21,879 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 02:43:21,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-29 02:43:21,879 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:43:21,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:43:21,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1192124223, now seen corresponding path program 1 times [2023-11-29 02:43:21,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:43:21,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011987771] [2023-11-29 02:43:21,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:43:21,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:43:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:43:22,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2086 backedges. 1355 proven. 0 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2023-11-29 02:43:22,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:43:22,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011987771] [2023-11-29 02:43:22,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011987771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:43:22,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:43:22,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:43:22,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495163242] [2023-11-29 02:43:22,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:43:22,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:43:22,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:43:22,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:43:22,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:43:22,736 INFO L87 Difference]: Start difference. First operand 90687 states and 93490 transitions. Second operand has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 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 02:43:25,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:43:25,518 INFO L93 Difference]: Finished difference Result 189477 states and 195272 transitions. [2023-11-29 02:43:25,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:43:25,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 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 1151 [2023-11-29 02:43:25,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:43:25,600 INFO L225 Difference]: With dead ends: 189477 [2023-11-29 02:43:25,600 INFO L226 Difference]: Without dead ends: 98791 [2023-11-29 02:43:25,630 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 02:43:25,630 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 849 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 2103 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 2320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 2103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:43:25,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 163 Invalid, 2320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 2103 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 02:43:25,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98791 states. [2023-11-29 02:43:26,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98791 to 87703. [2023-11-29 02:43:26,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87703 states, 87702 states have (on average 1.0293037787051607) internal successors, (90272), 87702 states have internal predecessors, (90272), 0 states have call successors, (0), 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 02:43:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87703 states to 87703 states and 90272 transitions. [2023-11-29 02:43:26,757 INFO L78 Accepts]: Start accepts. Automaton has 87703 states and 90272 transitions. Word has length 1151 [2023-11-29 02:43:26,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:43:26,757 INFO L495 AbstractCegarLoop]: Abstraction has 87703 states and 90272 transitions. [2023-11-29 02:43:26,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 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 02:43:26,758 INFO L276 IsEmpty]: Start isEmpty. Operand 87703 states and 90272 transitions. [2023-11-29 02:43:26,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1167 [2023-11-29 02:43:26,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:43:26,785 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:43:26,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-29 02:43:26,785 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:43:26,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:43:26,786 INFO L85 PathProgramCache]: Analyzing trace with hash 846522592, now seen corresponding path program 1 times [2023-11-29 02:43:26,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:43:26,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221129804] [2023-11-29 02:43:26,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:43:26,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:43:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:43:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 854 proven. 323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:43:28,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:43:28,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221129804] [2023-11-29 02:43:28,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221129804] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:43:28,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925618995] [2023-11-29 02:43:28,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:43:28,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:43:28,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:43:28,839 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:43:28,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:43:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:43:29,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:43:29,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:43:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 801 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2023-11-29 02:43:29,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:43:29,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925618995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:43:29,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:43:29,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-29 02:43:29,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930692360] [2023-11-29 02:43:29,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:43:29,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:43:29,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:43:29,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:43:29,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:43:29,559 INFO L87 Difference]: Start difference. First operand 87703 states and 90272 transitions. Second operand has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 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 02:43:32,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:43:32,568 INFO L93 Difference]: Finished difference Result 103896 states and 106762 transitions. [2023-11-29 02:43:32,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:43:32,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 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 1166 [2023-11-29 02:43:32,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:43:32,665 INFO L225 Difference]: With dead ends: 103896 [2023-11-29 02:43:32,665 INFO L226 Difference]: Without dead ends: 103469 [2023-11-29 02:43:32,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1170 GetRequests, 1164 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:43:32,688 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 555 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 2492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:43:32,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 117 Invalid, 2492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 02:43:32,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103469 states. [2023-11-29 02:43:33,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103469 to 90680. [2023-11-29 02:43:33,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90680 states, 90679 states have (on average 1.0293452728856736) internal successors, (93340), 90679 states have internal predecessors, (93340), 0 states have call successors, (0), 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 02:43:33,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90680 states to 90680 states and 93340 transitions. [2023-11-29 02:43:33,659 INFO L78 Accepts]: Start accepts. Automaton has 90680 states and 93340 transitions. Word has length 1166 [2023-11-29 02:43:33,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:43:33,660 INFO L495 AbstractCegarLoop]: Abstraction has 90680 states and 93340 transitions. [2023-11-29 02:43:33,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 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 02:43:33,660 INFO L276 IsEmpty]: Start isEmpty. Operand 90680 states and 93340 transitions. [2023-11-29 02:43:33,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1198 [2023-11-29 02:43:33,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:43:33,691 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 02:43:33,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:43:33,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 02:43:33,892 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:43:33,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:43:33,892 INFO L85 PathProgramCache]: Analyzing trace with hash 707221646, now seen corresponding path program 1 times [2023-11-29 02:43:33,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:43:33,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284609899] [2023-11-29 02:43:33,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:43:33,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:43:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:43:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2201 backedges. 1582 proven. 0 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2023-11-29 02:43:35,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:43:35,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284609899] [2023-11-29 02:43:35,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284609899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:43:35,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:43:35,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:43:35,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125780762] [2023-11-29 02:43:35,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:43:35,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:43:35,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:43:35,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:43:35,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:43:35,007 INFO L87 Difference]: Start difference. First operand 90680 states and 93340 transitions. Second operand has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 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 02:43:36,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:43:36,967 INFO L93 Difference]: Finished difference Result 179232 states and 184491 transitions. [2023-11-29 02:43:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:43:36,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 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 1197 [2023-11-29 02:43:36,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:43:37,032 INFO L225 Difference]: With dead ends: 179232 [2023-11-29 02:43:37,032 INFO L226 Difference]: Without dead ends: 88553 [2023-11-29 02:43:37,049 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 02:43:37,049 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 129 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:43:37,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 669 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 02:43:37,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88553 states. [2023-11-29 02:43:37,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88553 to 81745. [2023-11-29 02:43:37,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81745 states, 81744 states have (on average 1.0288461538461537) internal successors, (84102), 81744 states have internal predecessors, (84102), 0 states have call successors, (0), 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 02:43:38,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81745 states to 81745 states and 84102 transitions. [2023-11-29 02:43:38,059 INFO L78 Accepts]: Start accepts. Automaton has 81745 states and 84102 transitions. Word has length 1197 [2023-11-29 02:43:38,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:43:38,060 INFO L495 AbstractCegarLoop]: Abstraction has 81745 states and 84102 transitions. [2023-11-29 02:43:38,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 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 02:43:38,060 INFO L276 IsEmpty]: Start isEmpty. Operand 81745 states and 84102 transitions. [2023-11-29 02:43:38,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1208 [2023-11-29 02:43:38,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:43:38,091 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:43:38,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-11-29 02:43:38,091 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:43:38,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:43:38,091 INFO L85 PathProgramCache]: Analyzing trace with hash -2045705117, now seen corresponding path program 1 times [2023-11-29 02:43:38,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:43:38,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179038532] [2023-11-29 02:43:38,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:43:38,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:43:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:43:39,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1748 backedges. 1104 proven. 399 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-29 02:43:39,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:43:39,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179038532] [2023-11-29 02:43:39,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179038532] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:43:39,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593195190] [2023-11-29 02:43:39,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:43:39,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:43:39,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:43:39,578 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:43:39,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:43:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:43:39,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 02:43:39,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:43:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1748 backedges. 519 proven. 978 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2023-11-29 02:43:44,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:43:50,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1748 backedges. 378 proven. 1119 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2023-11-29 02:43:50,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593195190] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:43:50,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:43:50,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 7] total 15 [2023-11-29 02:43:50,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228009751] [2023-11-29 02:43:50,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:43:50,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 02:43:50,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:43:50,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 02:43:50,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:43:50,252 INFO L87 Difference]: Start difference. First operand 81745 states and 84102 transitions. Second operand has 15 states, 15 states have (on average 175.13333333333333) internal successors, (2627), 15 states have internal predecessors, (2627), 0 states have call successors, (0), 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 02:44:12,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:44:12,700 INFO L93 Difference]: Finished difference Result 210417 states and 215830 transitions. [2023-11-29 02:44:12,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-11-29 02:44:12,701 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 175.13333333333333) internal successors, (2627), 15 states have internal predecessors, (2627), 0 states have call successors, (0), 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 1207 [2023-11-29 02:44:12,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:44:12,803 INFO L225 Difference]: With dead ends: 210417 [2023-11-29 02:44:12,803 INFO L226 Difference]: Without dead ends: 127819 [2023-11-29 02:44:12,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2530 GetRequests, 2441 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3096 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1437, Invalid=6753, Unknown=0, NotChecked=0, Total=8190 [2023-11-29 02:44:12,841 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 14819 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 22907 mSolverCounterSat, 2882 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14819 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 25789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2882 IncrementalHoareTripleChecker+Valid, 22907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:44:12,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14819 Valid, 370 Invalid, 25789 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2882 Valid, 22907 Invalid, 0 Unknown, 0 Unchecked, 19.4s Time] [2023-11-29 02:44:12,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127819 states. [2023-11-29 02:44:13,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127819 to 81320. [2023-11-29 02:44:13,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81320 states, 81319 states have (on average 1.0284189426825219) internal successors, (83630), 81319 states have internal predecessors, (83630), 0 states have call successors, (0), 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 02:44:13,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81320 states to 81320 states and 83630 transitions. [2023-11-29 02:44:13,985 INFO L78 Accepts]: Start accepts. Automaton has 81320 states and 83630 transitions. Word has length 1207 [2023-11-29 02:44:13,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:44:13,985 INFO L495 AbstractCegarLoop]: Abstraction has 81320 states and 83630 transitions. [2023-11-29 02:44:13,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 175.13333333333333) internal successors, (2627), 15 states have internal predecessors, (2627), 0 states have call successors, (0), 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 02:44:13,986 INFO L276 IsEmpty]: Start isEmpty. Operand 81320 states and 83630 transitions. [2023-11-29 02:44:14,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1246 [2023-11-29 02:44:14,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:44:14,016 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:14,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 02:44:14,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:14,217 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:44:14,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:44:14,218 INFO L85 PathProgramCache]: Analyzing trace with hash 194718663, now seen corresponding path program 1 times [2023-11-29 02:44:14,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:44:14,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451972075] [2023-11-29 02:44:14,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:14,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:44:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1775 backedges. 1060 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-11-29 02:44:16,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:44:16,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451972075] [2023-11-29 02:44:16,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451972075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:44:16,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:44:16,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:44:16,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966903263] [2023-11-29 02:44:16,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:44:16,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:44:16,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:44:16,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:44:16,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:44:16,091 INFO L87 Difference]: Start difference. First operand 81320 states and 83630 transitions. Second operand has 5 states, 5 states have (on average 154.4) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 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 02:44:18,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:44:18,206 INFO L93 Difference]: Finished difference Result 83911 states and 86241 transitions. [2023-11-29 02:44:18,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:44:18,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 154.4) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 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 1245 [2023-11-29 02:44:18,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:44:18,261 INFO L225 Difference]: With dead ends: 83911 [2023-11-29 02:44:18,261 INFO L226 Difference]: Without dead ends: 83456 [2023-11-29 02:44:18,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:44:18,273 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 523 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:44:18,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 72 Invalid, 1955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1753 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 02:44:18,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83456 states. [2023-11-29 02:44:19,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83456 to 79195. [2023-11-29 02:44:19,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79195 states, 79194 states have (on average 1.0283228527413693) internal successors, (81437), 79194 states have internal predecessors, (81437), 0 states have call successors, (0), 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 02:44:19,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79195 states to 79195 states and 81437 transitions. [2023-11-29 02:44:19,143 INFO L78 Accepts]: Start accepts. Automaton has 79195 states and 81437 transitions. Word has length 1245 [2023-11-29 02:44:19,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:44:19,144 INFO L495 AbstractCegarLoop]: Abstraction has 79195 states and 81437 transitions. [2023-11-29 02:44:19,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.4) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 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 02:44:19,145 INFO L276 IsEmpty]: Start isEmpty. Operand 79195 states and 81437 transitions. [2023-11-29 02:44:19,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1279 [2023-11-29 02:44:19,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:44:19,176 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:19,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-29 02:44:19,176 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:44:19,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:44:19,177 INFO L85 PathProgramCache]: Analyzing trace with hash 974447984, now seen corresponding path program 1 times [2023-11-29 02:44:19,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:44:19,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080747201] [2023-11-29 02:44:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:19,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:44:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1723 backedges. 1123 proven. 94 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2023-11-29 02:44:20,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:44:20,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080747201] [2023-11-29 02:44:20,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080747201] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:44:20,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492544806] [2023-11-29 02:44:20,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:20,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:20,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:44:20,423 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:44:20,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:44:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:20,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:44:20,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:44:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1723 backedges. 605 proven. 0 refuted. 0 times theorem prover too weak. 1118 trivial. 0 not checked. [2023-11-29 02:44:20,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:44:20,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492544806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:44:20,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:44:20,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-29 02:44:20,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842888420] [2023-11-29 02:44:20,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:44:20,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:44:20,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:44:20,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:44:20,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:44:20,991 INFO L87 Difference]: Start difference. First operand 79195 states and 81437 transitions. Second operand has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 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 02:44:25,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:44:25,100 INFO L93 Difference]: Finished difference Result 175433 states and 180319 transitions. [2023-11-29 02:44:25,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:44:25,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 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 1278 [2023-11-29 02:44:25,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:44:25,168 INFO L225 Difference]: With dead ends: 175433 [2023-11-29 02:44:25,168 INFO L226 Difference]: Without dead ends: 95814 [2023-11-29 02:44:25,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1282 GetRequests, 1276 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:44:25,337 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 1194 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 3372 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 3548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 3372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:44:25,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1194 Valid, 233 Invalid, 3548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 3372 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 02:44:25,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95814 states. [2023-11-29 02:44:26,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95814 to 78769. [2023-11-29 02:44:26,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78769 states, 78768 states have (on average 1.028069774527727) internal successors, (80979), 78768 states have internal predecessors, (80979), 0 states have call successors, (0), 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 02:44:26,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78769 states to 78769 states and 80979 transitions. [2023-11-29 02:44:26,143 INFO L78 Accepts]: Start accepts. Automaton has 78769 states and 80979 transitions. Word has length 1278 [2023-11-29 02:44:26,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:44:26,144 INFO L495 AbstractCegarLoop]: Abstraction has 78769 states and 80979 transitions. [2023-11-29 02:44:26,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 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 02:44:26,144 INFO L276 IsEmpty]: Start isEmpty. Operand 78769 states and 80979 transitions. [2023-11-29 02:44:26,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1349 [2023-11-29 02:44:26,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:44:26,186 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:44:26,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 02:44:26,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:26,387 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:44:26,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:44:26,387 INFO L85 PathProgramCache]: Analyzing trace with hash 186372919, now seen corresponding path program 1 times [2023-11-29 02:44:26,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:44:26,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717811968] [2023-11-29 02:44:26,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:26,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:44:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:28,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1933 backedges. 1263 proven. 164 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2023-11-29 02:44:28,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:44:28,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717811968] [2023-11-29 02:44:28,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717811968] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:44:28,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837477116] [2023-11-29 02:44:28,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:28,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:28,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:44:28,443 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:44:28,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:44:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:28,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 1532 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:44:28,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:44:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1933 backedges. 763 proven. 52 refuted. 0 times theorem prover too weak. 1118 trivial. 0 not checked. [2023-11-29 02:44:29,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:44:30,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1933 backedges. 815 proven. 0 refuted. 0 times theorem prover too weak. 1118 trivial. 0 not checked. [2023-11-29 02:44:30,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837477116] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:44:30,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:44:30,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2023-11-29 02:44:30,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570841924] [2023-11-29 02:44:30,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:44:30,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:44:30,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:44:30,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:44:30,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:44:30,015 INFO L87 Difference]: Start difference. First operand 78769 states and 80979 transitions. Second operand has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 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 02:44:33,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:44:33,437 INFO L93 Difference]: Finished difference Result 81759 states and 83994 transitions. [2023-11-29 02:44:33,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:44:33,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 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 1348 [2023-11-29 02:44:33,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:44:33,491 INFO L225 Difference]: With dead ends: 81759 [2023-11-29 02:44:33,491 INFO L226 Difference]: Without dead ends: 81332 [2023-11-29 02:44:33,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2699 GetRequests, 2691 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:44:33,506 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 1140 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 2599 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 2599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:44:33,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 78 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 2599 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 02:44:33,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81332 states. [2023-11-29 02:44:34,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81332 to 78769. [2023-11-29 02:44:34,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78769 states, 78768 states have (on average 1.0280189924842575) internal successors, (80975), 78768 states have internal predecessors, (80975), 0 states have call successors, (0), 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 02:44:34,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78769 states to 78769 states and 80975 transitions. [2023-11-29 02:44:34,327 INFO L78 Accepts]: Start accepts. Automaton has 78769 states and 80975 transitions. Word has length 1348 [2023-11-29 02:44:34,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:44:34,327 INFO L495 AbstractCegarLoop]: Abstraction has 78769 states and 80975 transitions. [2023-11-29 02:44:34,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 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 02:44:34,328 INFO L276 IsEmpty]: Start isEmpty. Operand 78769 states and 80975 transitions. [2023-11-29 02:44:34,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1360 [2023-11-29 02:44:34,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:44:34,370 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:34,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 02:44:34,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-29 02:44:34,571 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:44:34,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:44:34,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2032189318, now seen corresponding path program 1 times [2023-11-29 02:44:34,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:44:34,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776857942] [2023-11-29 02:44:34,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:34,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:44:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:36,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2190 backedges. 1405 proven. 0 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2023-11-29 02:44:36,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:44:36,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776857942] [2023-11-29 02:44:36,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776857942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:44:36,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:44:36,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:44:36,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476648351] [2023-11-29 02:44:36,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:44:36,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:44:36,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:44:36,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:44:36,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:44:36,395 INFO L87 Difference]: Start difference. First operand 78769 states and 80975 transitions. Second operand has 4 states, 4 states have (on average 205.5) internal successors, (822), 4 states have internal predecessors, (822), 0 states have call successors, (0), 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 02:44:39,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:44:39,494 INFO L93 Difference]: Finished difference Result 175428 states and 180385 transitions. [2023-11-29 02:44:39,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:44:39,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 205.5) internal successors, (822), 4 states have internal predecessors, (822), 0 states have call successors, (0), 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 1359 [2023-11-29 02:44:39,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:44:39,564 INFO L225 Difference]: With dead ends: 175428 [2023-11-29 02:44:39,564 INFO L226 Difference]: Without dead ends: 96235 [2023-11-29 02:44:39,595 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 02:44:39,595 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 617 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 2172 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 2432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 2172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:44:39,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 112 Invalid, 2432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 2172 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 02:44:39,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96235 states. [2023-11-29 02:44:40,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96235 to 79619. [2023-11-29 02:44:40,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79619 states, 79618 states have (on average 1.0283227410886986) internal successors, (81873), 79618 states have internal predecessors, (81873), 0 states have call successors, (0), 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 02:44:40,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79619 states to 79619 states and 81873 transitions. [2023-11-29 02:44:40,502 INFO L78 Accepts]: Start accepts. Automaton has 79619 states and 81873 transitions. Word has length 1359 [2023-11-29 02:44:40,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:44:40,503 INFO L495 AbstractCegarLoop]: Abstraction has 79619 states and 81873 transitions. [2023-11-29 02:44:40,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 205.5) internal successors, (822), 4 states have internal predecessors, (822), 0 states have call successors, (0), 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 02:44:40,504 INFO L276 IsEmpty]: Start isEmpty. Operand 79619 states and 81873 transitions. [2023-11-29 02:44:40,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1407 [2023-11-29 02:44:40,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:44:40,547 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:44:40,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-11-29 02:44:40,547 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:44:40,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:44:40,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2140346102, now seen corresponding path program 1 times [2023-11-29 02:44:40,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:44:40,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181948545] [2023-11-29 02:44:40,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:40,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:44:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:43,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1986 backedges. 1688 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-29 02:44:43,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:44:43,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181948545] [2023-11-29 02:44:43,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181948545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:44:43,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:44:43,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:44:43,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261507801] [2023-11-29 02:44:43,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:44:43,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:44:43,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:44:43,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:44:43,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:44:43,344 INFO L87 Difference]: Start difference. First operand 79619 states and 81873 transitions. Second operand has 3 states, 3 states have (on average 397.3333333333333) internal successors, (1192), 3 states have internal predecessors, (1192), 0 states have call successors, (0), 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 02:44:45,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:44:45,250 INFO L93 Difference]: Finished difference Result 159663 states and 164184 transitions. [2023-11-29 02:44:45,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:44:45,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 397.3333333333333) internal successors, (1192), 3 states have internal predecessors, (1192), 0 states have call successors, (0), 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 1406 [2023-11-29 02:44:45,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:44:45,314 INFO L225 Difference]: With dead ends: 159663 [2023-11-29 02:44:45,314 INFO L226 Difference]: Without dead ends: 80045 [2023-11-29 02:44:45,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:44:45,333 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 51 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:44:45,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 691 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 02:44:45,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80045 states. [2023-11-29 02:44:46,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80045 to 80044. [2023-11-29 02:44:46,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80044 states, 80043 states have (on average 1.0281348775033419) internal successors, (82295), 80043 states have internal predecessors, (82295), 0 states have call successors, (0), 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 02:44:46,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80044 states to 80044 states and 82295 transitions. [2023-11-29 02:44:46,311 INFO L78 Accepts]: Start accepts. Automaton has 80044 states and 82295 transitions. Word has length 1406 [2023-11-29 02:44:46,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:44:46,312 INFO L495 AbstractCegarLoop]: Abstraction has 80044 states and 82295 transitions. [2023-11-29 02:44:46,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 397.3333333333333) internal successors, (1192), 3 states have internal predecessors, (1192), 0 states have call successors, (0), 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 02:44:46,312 INFO L276 IsEmpty]: Start isEmpty. Operand 80044 states and 82295 transitions. [2023-11-29 02:44:46,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1447 [2023-11-29 02:44:46,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:44:46,357 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:44:46,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-11-29 02:44:46,357 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:44:46,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:44:46,357 INFO L85 PathProgramCache]: Analyzing trace with hash -298025288, now seen corresponding path program 1 times [2023-11-29 02:44:46,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:44:46,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403813216] [2023-11-29 02:44:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:46,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:44:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:48,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2227 backedges. 1459 proven. 262 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2023-11-29 02:44:48,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:44:48,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403813216] [2023-11-29 02:44:48,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403813216] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:44:48,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704002182] [2023-11-29 02:44:48,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:48,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:48,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:44:48,763 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:44:48,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 02:44:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:49,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 1630 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:44:49,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:44:50,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2227 backedges. 1057 proven. 52 refuted. 0 times theorem prover too weak. 1118 trivial. 0 not checked. [2023-11-29 02:44:50,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:44:50,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2227 backedges. 1109 proven. 0 refuted. 0 times theorem prover too weak. 1118 trivial. 0 not checked. [2023-11-29 02:44:50,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704002182] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:44:50,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:44:50,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2023-11-29 02:44:50,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785664512] [2023-11-29 02:44:50,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:44:50,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:44:50,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:44:50,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:44:50,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:44:50,764 INFO L87 Difference]: Start difference. First operand 80044 states and 82295 transitions. Second operand has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 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 02:44:54,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:44:54,669 INFO L93 Difference]: Finished difference Result 83033 states and 85309 transitions. [2023-11-29 02:44:54,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:44:54,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 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 1446 [2023-11-29 02:44:54,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:44:54,722 INFO L225 Difference]: With dead ends: 83033 [2023-11-29 02:44:54,722 INFO L226 Difference]: Without dead ends: 82606 [2023-11-29 02:44:54,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2895 GetRequests, 2886 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:44:54,732 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1269 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 2584 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 2584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:44:54,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 76 Invalid, 2941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 2584 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 02:44:54,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82606 states. [2023-11-29 02:44:55,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82606 to 80044. [2023-11-29 02:44:55,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80044 states, 80043 states have (on average 1.0280474245093263) internal successors, (82288), 80043 states have internal predecessors, (82288), 0 states have call successors, (0), 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 02:44:55,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80044 states to 80044 states and 82288 transitions. [2023-11-29 02:44:55,588 INFO L78 Accepts]: Start accepts. Automaton has 80044 states and 82288 transitions. Word has length 1446 [2023-11-29 02:44:55,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:44:55,589 INFO L495 AbstractCegarLoop]: Abstraction has 80044 states and 82288 transitions. [2023-11-29 02:44:55,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 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 02:44:55,589 INFO L276 IsEmpty]: Start isEmpty. Operand 80044 states and 82288 transitions. [2023-11-29 02:44:55,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1465 [2023-11-29 02:44:55,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:44:55,633 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, 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, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:55,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 02:44:55,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-29 02:44:55,834 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:44:55,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:44:55,835 INFO L85 PathProgramCache]: Analyzing trace with hash -646613378, now seen corresponding path program 1 times [2023-11-29 02:44:55,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:44:55,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738626517] [2023-11-29 02:44:55,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:55,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:44:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2476 backedges. 1891 proven. 79 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2023-11-29 02:44:58,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:44:58,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738626517] [2023-11-29 02:44:58,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738626517] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:44:58,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626601111] [2023-11-29 02:44:58,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:58,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:58,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:44:58,831 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:44:58,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31dec12e-7650-4ab1-9468-cbb489366b18/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 02:44:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:59,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 1674 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:44:59,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:44:59,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2476 backedges. 1279 proven. 79 refuted. 0 times theorem prover too weak. 1118 trivial. 0 not checked. [2023-11-29 02:44:59,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:45:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2476 backedges. 1358 proven. 0 refuted. 0 times theorem prover too weak. 1118 trivial. 0 not checked. [2023-11-29 02:45:14,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626601111] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:45:14,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:45:14,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 5] total 13 [2023-11-29 02:45:14,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485711856] [2023-11-29 02:45:14,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:45:14,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:45:14,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:45:14,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:45:14,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=89, Unknown=1, NotChecked=0, Total=156 [2023-11-29 02:45:14,317 INFO L87 Difference]: Start difference. First operand 80044 states and 82288 transitions. Second operand has 6 states, 6 states have (on average 125.16666666666667) internal successors, (751), 6 states have internal predecessors, (751), 0 states have call successors, (0), 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 02:45:19,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:45:23,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:45:28,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:45:32,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:45:36,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:45:40,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:45:44,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:45:48,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:45:52,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:45:57,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:01,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:05,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:09,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:13,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:17,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:21,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:25,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:29,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:33,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:37,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:41,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:46,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:50,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:54,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:46:59,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:47:03,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:47:07,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:47:11,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:47:15,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:47:19,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:47:23,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:47:27,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:47:31,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:47:35,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:47:39,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:47:43,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:47:48,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:47:52,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:47:56,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:48:00,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:48:04,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:48:08,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:48:12,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:48:16,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:48:21,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:48:25,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:48:29,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:48:31,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:48:35,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:48:39,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:48:43,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:48:47,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:48:51,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:48:55,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:48:59,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:49:03,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:49:08,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:49:12,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:49:16,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:49:20,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:49:24,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:49:28,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:49:33,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:49:37,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:49:41,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:49:45,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:49:49,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:49:53,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:49:57,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:50:01,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:50:05,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:50:09,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:50:14,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:50:18,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:50:22,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:50:26,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:50:30,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:50:34,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:50:38,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:50:42,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:50:46,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:50:50,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:50:54,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:50:58,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:51:02,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:51:06,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:51:10,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:51:14,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:51:18,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:51:22,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:51:26,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:51:30,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:51:35,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:51:39,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:51:44,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:51:46,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:51:50,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:51:54,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:51:59,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:52:03,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:52:07,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:52:11,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:52:15,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:52:19,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:52:24,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:52:28,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:52:32,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:52:36,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:52:40,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:52:44,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:52:48,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:52:52,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:52:57,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:53:01,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]