./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p8.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/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_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p8.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/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 64bit --witnessprinter.graph.data.programhash f3404e2fbc7a20869c435d02f711b49b9954190b9e76f3a225c068832cc39dae --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:05:18,635 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:05:18,699 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 04:05:18,704 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:05:18,705 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:05:18,729 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:05:18,729 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:05:18,730 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:05:18,731 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:05:18,731 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:05:18,732 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:05:18,732 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:05:18,733 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:05:18,733 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:05:18,734 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:05:18,735 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:05:18,735 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:05:18,736 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:05:18,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:05:18,736 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:05:18,737 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:05:18,738 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:05:18,738 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:05:18,739 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:05:18,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:05:18,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:05:18,740 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:05:18,741 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:05:18,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:05:18,742 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:05:18,742 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:05:18,742 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:05:18,743 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:05:18,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:05:18,743 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:05:18,743 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:05:18,743 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:05:18,744 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:05:18,744 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:05:18,744 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_014feb39-7730-4bba-8628-bdf5f48284f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3404e2fbc7a20869c435d02f711b49b9954190b9e76f3a225c068832cc39dae [2023-11-29 04:05:18,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:05:18,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:05:18,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:05:18,985 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:05:18,986 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:05:18,987 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p8.c [2023-11-29 04:05:21,738 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:05:22,035 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:05:22,035 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p8.c [2023-11-29 04:05:22,054 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/data/2e97762a2/9c732330753c454a8be4ec1662bb8eed/FLAG27008ab28 [2023-11-29 04:05:22,069 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/data/2e97762a2/9c732330753c454a8be4ec1662bb8eed [2023-11-29 04:05:22,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:05:22,073 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:05:22,075 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:05:22,075 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:05:22,079 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:05:22,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:05:22" (1/1) ... [2023-11-29 04:05:22,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@372a6609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:05:22, skipping insertion in model container [2023-11-29 04:05:22,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:05:22" (1/1) ... [2023-11-29 04:05:22,149 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:05:22,341 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_014feb39-7730-4bba-8628-bdf5f48284f6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p8.c[1260,1273] [2023-11-29 04:05:22,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:05:22,701 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:05:22,713 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_014feb39-7730-4bba-8628-bdf5f48284f6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p8.c[1260,1273] [2023-11-29 04:05:22,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:05:22,880 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:05:22,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:05:22 WrapperNode [2023-11-29 04:05:22,881 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:05:22,881 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:05:22,881 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:05:22,882 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:05:22,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:05:22" (1/1) ... [2023-11-29 04:05:22,942 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:05:22" (1/1) ... [2023-11-29 04:05:23,393 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 5210 [2023-11-29 04:05:23,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:05:23,394 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:05:23,394 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:05:23,394 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:05:23,404 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:05:22" (1/1) ... [2023-11-29 04:05:23,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:05:22" (1/1) ... [2023-11-29 04:05:23,488 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:05:22" (1/1) ... [2023-11-29 04:05:23,679 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 04:05:23,680 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:05:22" (1/1) ... [2023-11-29 04:05:23,680 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:05:22" (1/1) ... [2023-11-29 04:05:23,827 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:05:22" (1/1) ... [2023-11-29 04:05:23,887 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:05:22" (1/1) ... [2023-11-29 04:05:23,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:05:22" (1/1) ... [2023-11-29 04:05:23,994 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:05:22" (1/1) ... [2023-11-29 04:05:24,134 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:05:24,136 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:05:24,136 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:05:24,136 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:05:24,137 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:05:22" (1/1) ... [2023-11-29 04:05:24,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:05:24,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:05:24,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:05:24,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:05:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:05:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:05:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:05:24,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:05:24,626 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:05:24,628 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:05:28,142 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:05:28,245 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:05:28,245 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 04:05:28,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:05:28 BoogieIcfgContainer [2023-11-29 04:05:28,246 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:05:28,248 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:05:28,248 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:05:28,251 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:05:28,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:05:22" (1/3) ... [2023-11-29 04:05:28,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5525f220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:05:28, skipping insertion in model container [2023-11-29 04:05:28,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:05:22" (2/3) ... [2023-11-29 04:05:28,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5525f220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:05:28, skipping insertion in model container [2023-11-29 04:05:28,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:05:28" (3/3) ... [2023-11-29 04:05:28,254 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p8.c [2023-11-29 04:05:28,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:05:28,270 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:05:28,332 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:05:28,337 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;@4080854c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:05:28,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:05:28,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 1020 states, 1018 states have (on average 1.6669941060903732) internal successors, (1697), 1019 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states 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 04:05:28,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 04:05:28,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:05:28,355 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] [2023-11-29 04:05:28,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:05:28,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:05:28,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1119984543, now seen corresponding path program 1 times [2023-11-29 04:05:28,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:05:28,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010603193] [2023-11-29 04:05:28,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:05:28,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:05:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:05:29,264 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 04:05:29,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:05:29,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010603193] [2023-11-29 04:05:29,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010603193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:05:29,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:05:29,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:05:29,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704215474] [2023-11-29 04:05:29,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:05:29,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:05:29,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:05:29,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:05:29,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:05:29,312 INFO L87 Difference]: Start difference. First operand has 1020 states, 1018 states have (on average 1.6669941060903732) internal successors, (1697), 1019 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 04:05:29,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:05:29,457 INFO L93 Difference]: Finished difference Result 2017 states and 3360 transitions. [2023-11-29 04:05:29,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:05:29,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2023-11-29 04:05:29,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:05:29,483 INFO L225 Difference]: With dead ends: 2017 [2023-11-29 04:05:29,483 INFO L226 Difference]: Without dead ends: 1037 [2023-11-29 04:05:29,490 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 04:05:29,493 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 1625 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:05:29,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1625 Valid, 1814 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:05:29,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2023-11-29 04:05:29,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1018. [2023-11-29 04:05:29,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 1017 states have (on average 1.663716814159292) internal successors, (1692), 1017 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states 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 04:05:29,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1692 transitions. [2023-11-29 04:05:29,582 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1692 transitions. Word has length 50 [2023-11-29 04:05:29,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:05:29,583 INFO L495 AbstractCegarLoop]: Abstraction has 1018 states and 1692 transitions. [2023-11-29 04:05:29,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 04:05:29,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1692 transitions. [2023-11-29 04:05:29,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-29 04:05:29,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:05:29,585 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] [2023-11-29 04:05:29,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:05:29,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:05:29,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:05:29,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1545658587, now seen corresponding path program 1 times [2023-11-29 04:05:29,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:05:29,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109549687] [2023-11-29 04:05:29,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:05:29,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:05:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:05:29,918 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 04:05:29,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:05:29,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109549687] [2023-11-29 04:05:29,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109549687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:05:29,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:05:29,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:05:29,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935427929] [2023-11-29 04:05:29,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:05:29,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:05:29,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:05:29,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:05:29,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:05:29,923 INFO L87 Difference]: Start difference. First operand 1018 states and 1692 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 04:05:30,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:05:30,001 INFO L93 Difference]: Finished difference Result 1022 states and 1696 transitions. [2023-11-29 04:05:30,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:05:30,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-11-29 04:05:30,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:05:30,009 INFO L225 Difference]: With dead ends: 1022 [2023-11-29 04:05:30,009 INFO L226 Difference]: Without dead ends: 1020 [2023-11-29 04:05:30,010 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 04:05:30,011 INFO L413 NwaCegarLoop]: 1689 mSDtfsCounter, 1 mSDsluCounter, 3373 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5062 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:05:30,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5062 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:05:30,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2023-11-29 04:05:30,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 1020. [2023-11-29 04:05:30,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 1019 states have (on average 1.662414131501472) internal successors, (1694), 1019 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states 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 04:05:30,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1694 transitions. [2023-11-29 04:05:30,042 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1694 transitions. Word has length 51 [2023-11-29 04:05:30,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:05:30,042 INFO L495 AbstractCegarLoop]: Abstraction has 1020 states and 1694 transitions. [2023-11-29 04:05:30,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 04:05:30,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1694 transitions. [2023-11-29 04:05:30,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 04:05:30,044 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:05:30,045 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] [2023-11-29 04:05:30,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:05:30,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:05:30,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:05:30,046 INFO L85 PathProgramCache]: Analyzing trace with hash 672501165, now seen corresponding path program 1 times [2023-11-29 04:05:30,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:05:30,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715430837] [2023-11-29 04:05:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:05:30,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:05:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:05:30,311 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 04:05:30,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:05:30,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715430837] [2023-11-29 04:05:30,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715430837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:05:30,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:05:30,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:05:30,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187316874] [2023-11-29 04:05:30,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:05:30,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:05:30,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:05:30,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:05:30,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:05:30,315 INFO L87 Difference]: Start difference. First operand 1020 states and 1694 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 04:05:30,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:05:30,400 INFO L93 Difference]: Finished difference Result 2003 states and 3326 transitions. [2023-11-29 04:05:30,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:05:30,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-11-29 04:05:30,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:05:30,407 INFO L225 Difference]: With dead ends: 2003 [2023-11-29 04:05:30,407 INFO L226 Difference]: Without dead ends: 1023 [2023-11-29 04:05:30,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 04:05:30,410 INFO L413 NwaCegarLoop]: 1689 mSDtfsCounter, 1 mSDsluCounter, 3371 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5060 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:05:30,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5060 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:05:30,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2023-11-29 04:05:30,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1022. [2023-11-29 04:05:30,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 1021 states have (on average 1.6611165523996083) internal successors, (1696), 1021 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states 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 04:05:30,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1696 transitions. [2023-11-29 04:05:30,445 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1696 transitions. Word has length 52 [2023-11-29 04:05:30,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:05:30,446 INFO L495 AbstractCegarLoop]: Abstraction has 1022 states and 1696 transitions. [2023-11-29 04:05:30,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 04:05:30,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1696 transitions. [2023-11-29 04:05:30,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 04:05:30,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:05:30,448 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 04:05:30,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:05:30,448 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:05:30,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:05:30,449 INFO L85 PathProgramCache]: Analyzing trace with hash 937274807, now seen corresponding path program 1 times [2023-11-29 04:05:30,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:05:30,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331903164] [2023-11-29 04:05:30,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:05:30,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:05:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:05:31,107 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 04:05:31,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:05:31,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331903164] [2023-11-29 04:05:31,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331903164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:05:31,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:05:31,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:05:31,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041783] [2023-11-29 04:05:31,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:05:31,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:05:31,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:05:31,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:05:31,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:05:31,110 INFO L87 Difference]: Start difference. First operand 1022 states and 1696 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 04:05:31,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:05:31,536 INFO L93 Difference]: Finished difference Result 3977 states and 6597 transitions. [2023-11-29 04:05:31,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:05:31,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 04:05:31,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:05:31,553 INFO L225 Difference]: With dead ends: 3977 [2023-11-29 04:05:31,554 INFO L226 Difference]: Without dead ends: 2995 [2023-11-29 04:05:31,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:05:31,557 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 8104 mSDsluCounter, 8522 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8104 SdHoareTripleChecker+Valid, 10238 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:05:31,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8104 Valid, 10238 Invalid, 85 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:05:31,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2023-11-29 04:05:31,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1030. [2023-11-29 04:05:31,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 1029 states have (on average 1.6588921282798834) internal successors, (1707), 1029 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states 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 04:05:31,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1707 transitions. [2023-11-29 04:05:31,601 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1707 transitions. Word has length 53 [2023-11-29 04:05:31,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:05:31,602 INFO L495 AbstractCegarLoop]: Abstraction has 1030 states and 1707 transitions. [2023-11-29 04:05:31,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 04:05:31,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1707 transitions. [2023-11-29 04:05:31,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 04:05:31,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:05:31,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:05:31,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:05:31,604 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:05:31,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:05:31,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1512985325, now seen corresponding path program 1 times [2023-11-29 04:05:31,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:05:31,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624142820] [2023-11-29 04:05:31,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:05:31,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:05:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:05:32,076 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 04:05:32,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:05:32,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624142820] [2023-11-29 04:05:32,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624142820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:05:32,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:05:32,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:05:32,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414155177] [2023-11-29 04:05:32,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:05:32,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:05:32,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:05:32,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:05:32,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:05:32,079 INFO L87 Difference]: Start difference. First operand 1030 states and 1707 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 04:05:32,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:05:32,326 INFO L93 Difference]: Finished difference Result 3030 states and 5021 transitions. [2023-11-29 04:05:32,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:05:32,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-11-29 04:05:32,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:05:32,337 INFO L225 Difference]: With dead ends: 3030 [2023-11-29 04:05:32,338 INFO L226 Difference]: Without dead ends: 2040 [2023-11-29 04:05:32,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:05:32,341 INFO L413 NwaCegarLoop]: 1709 mSDtfsCounter, 6544 mSDsluCounter, 3362 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6544 SdHoareTripleChecker+Valid, 5071 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:05:32,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6544 Valid, 5071 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:05:32,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2023-11-29 04:05:32,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1054. [2023-11-29 04:05:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 1053 states have (on average 1.6552706552706553) internal successors, (1743), 1053 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states 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 04:05:32,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1743 transitions. [2023-11-29 04:05:32,403 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1743 transitions. Word has length 54 [2023-11-29 04:05:32,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:05:32,403 INFO L495 AbstractCegarLoop]: Abstraction has 1054 states and 1743 transitions. [2023-11-29 04:05:32,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 04:05:32,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1743 transitions. [2023-11-29 04:05:32,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 04:05:32,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:05:32,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:05:32,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:05:32,405 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:05:32,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:05:32,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2099791339, now seen corresponding path program 1 times [2023-11-29 04:05:32,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:05:32,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385266078] [2023-11-29 04:05:32,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:05:32,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:05:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:05:33,213 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 04:05:33,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:05:33,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385266078] [2023-11-29 04:05:33,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385266078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:05:33,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:05:33,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:05:33,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875734851] [2023-11-29 04:05:33,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:05:33,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:05:33,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:05:33,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:05:33,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:05:33,217 INFO L87 Difference]: Start difference. First operand 1054 states and 1743 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 04:05:34,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:05:34,127 INFO L93 Difference]: Finished difference Result 6898 states and 11439 transitions. [2023-11-29 04:05:34,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:05:34,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-11-29 04:05:34,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:05:34,154 INFO L225 Difference]: With dead ends: 6898 [2023-11-29 04:05:34,154 INFO L226 Difference]: Without dead ends: 5908 [2023-11-29 04:05:34,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2023-11-29 04:05:34,158 INFO L413 NwaCegarLoop]: 3315 mSDtfsCounter, 16156 mSDsluCounter, 16542 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16156 SdHoareTripleChecker+Valid, 19857 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:05:34,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16156 Valid, 19857 Invalid, 238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:05:34,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5908 states. [2023-11-29 04:05:34,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5908 to 1057. [2023-11-29 04:05:34,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 1.6543560606060606) internal successors, (1747), 1056 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states 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 04:05:34,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1747 transitions. [2023-11-29 04:05:34,205 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1747 transitions. Word has length 54 [2023-11-29 04:05:34,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:05:34,205 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1747 transitions. [2023-11-29 04:05:34,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 04:05:34,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1747 transitions. [2023-11-29 04:05:34,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 04:05:34,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:05:34,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:05:34,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:05:34,208 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:05:34,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:05:34,208 INFO L85 PathProgramCache]: Analyzing trace with hash 650959827, now seen corresponding path program 1 times [2023-11-29 04:05:34,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:05:34,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120912597] [2023-11-29 04:05:34,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:05:34,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:05:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:05:34,370 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 04:05:34,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:05:34,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120912597] [2023-11-29 04:05:34,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120912597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:05:34,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:05:34,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:05:34,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903260609] [2023-11-29 04:05:34,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:05:34,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:05:34,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:05:34,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:05:34,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:05:34,373 INFO L87 Difference]: Start difference. First operand 1057 states and 1747 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 04:05:34,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:05:34,480 INFO L93 Difference]: Finished difference Result 3062 states and 5065 transitions. [2023-11-29 04:05:34,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:05:34,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-11-29 04:05:34,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:05:34,489 INFO L225 Difference]: With dead ends: 3062 [2023-11-29 04:05:34,489 INFO L226 Difference]: Without dead ends: 2068 [2023-11-29 04:05:34,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:05:34,492 INFO L413 NwaCegarLoop]: 1721 mSDtfsCounter, 3251 mSDsluCounter, 6718 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3251 SdHoareTripleChecker+Valid, 8439 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:05:34,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3251 Valid, 8439 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:05:34,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2023-11-29 04:05:34,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 1073. [2023-11-29 04:05:34,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1072 states have (on average 1.6520522388059702) internal successors, (1771), 1072 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states 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 04:05:34,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1771 transitions. [2023-11-29 04:05:34,519 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1771 transitions. Word has length 54 [2023-11-29 04:05:34,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:05:34,519 INFO L495 AbstractCegarLoop]: Abstraction has 1073 states and 1771 transitions. [2023-11-29 04:05:34,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 04:05:34,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1771 transitions. [2023-11-29 04:05:34,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 04:05:34,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:05:34,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:05:34,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:05:34,521 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:05:34,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:05:34,521 INFO L85 PathProgramCache]: Analyzing trace with hash 457408167, now seen corresponding path program 1 times [2023-11-29 04:05:34,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:05:34,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661343687] [2023-11-29 04:05:34,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:05:34,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:05:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:05:35,074 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 04:05:35,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:05:35,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661343687] [2023-11-29 04:05:35,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661343687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:05:35,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:05:35,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:05:35,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712024534] [2023-11-29 04:05:35,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:05:35,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:05:35,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:05:35,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:05:35,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:05:35,077 INFO L87 Difference]: Start difference. First operand 1073 states and 1771 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 04:05:35,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:05:35,759 INFO L93 Difference]: Finished difference Result 5066 states and 8374 transitions. [2023-11-29 04:05:35,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 04:05:35,759 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-11-29 04:05:35,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:05:35,780 INFO L225 Difference]: With dead ends: 5066 [2023-11-29 04:05:35,781 INFO L226 Difference]: Without dead ends: 4049 [2023-11-29 04:05:35,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-11-29 04:05:35,784 INFO L413 NwaCegarLoop]: 1713 mSDtfsCounter, 16173 mSDsluCounter, 10226 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16173 SdHoareTripleChecker+Valid, 11939 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:05:35,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16173 Valid, 11939 Invalid, 115 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:05:35,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4049 states. [2023-11-29 04:05:35,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4049 to 1077. [2023-11-29 04:05:35,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1076 states have (on average 1.649628252788104) internal successors, (1775), 1076 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states 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 04:05:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1775 transitions. [2023-11-29 04:05:35,831 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1775 transitions. Word has length 55 [2023-11-29 04:05:35,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:05:35,832 INFO L495 AbstractCegarLoop]: Abstraction has 1077 states and 1775 transitions. [2023-11-29 04:05:35,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 04:05:35,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1775 transitions. [2023-11-29 04:05:35,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 04:05:35,833 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:05:35,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:05:35,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:05:35,833 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:05:35,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:05:35,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1234362349, now seen corresponding path program 1 times [2023-11-29 04:05:35,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:05:35,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002017397] [2023-11-29 04:05:35,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:05:35,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:05:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:05:36,272 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 04:05:36,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:05:36,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002017397] [2023-11-29 04:05:36,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002017397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:05:36,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:05:36,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 04:05:36,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426754803] [2023-11-29 04:05:36,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:05:36,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:05:36,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:05:36,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:05:36,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:05:36,275 INFO L87 Difference]: Start difference. First operand 1077 states and 1775 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 04:05:37,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:05:37,201 INFO L93 Difference]: Finished difference Result 5101 states and 8419 transitions. [2023-11-29 04:05:37,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 04:05:37,202 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2023-11-29 04:05:37,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:05:37,225 INFO L225 Difference]: With dead ends: 5101 [2023-11-29 04:05:37,225 INFO L226 Difference]: Without dead ends: 4082 [2023-11-29 04:05:37,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2023-11-29 04:05:37,229 INFO L413 NwaCegarLoop]: 1712 mSDtfsCounter, 17827 mSDsluCounter, 11935 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17827 SdHoareTripleChecker+Valid, 13647 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:05:37,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17827 Valid, 13647 Invalid, 134 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:05:37,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2023-11-29 04:05:37,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 1083. [2023-11-29 04:05:37,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 1.6497227356746764) internal successors, (1785), 1082 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states 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 04:05:37,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1785 transitions. [2023-11-29 04:05:37,282 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1785 transitions. Word has length 56 [2023-11-29 04:05:37,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:05:37,282 INFO L495 AbstractCegarLoop]: Abstraction has 1083 states and 1785 transitions. [2023-11-29 04:05:37,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 04:05:37,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1785 transitions. [2023-11-29 04:05:37,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 04:05:37,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:05:37,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:05:37,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 04:05:37,284 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:05:37,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:05:37,284 INFO L85 PathProgramCache]: Analyzing trace with hash 777612875, now seen corresponding path program 1 times [2023-11-29 04:05:37,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:05:37,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656407484] [2023-11-29 04:05:37,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:05:37,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:05:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:05:37,556 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 04:05:37,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:05:37,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656407484] [2023-11-29 04:05:37,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656407484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:05:37,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:05:37,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:05:37,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163435299] [2023-11-29 04:05:37,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:05:37,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:05:37,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:05:37,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:05:37,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:05:37,559 INFO L87 Difference]: Start difference. First operand 1083 states and 1785 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 04:05:37,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:05:37,779 INFO L93 Difference]: Finished difference Result 3052 states and 5045 transitions. [2023-11-29 04:05:37,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:05:37,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-11-29 04:05:37,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:05:37,788 INFO L225 Difference]: With dead ends: 3052 [2023-11-29 04:05:37,789 INFO L226 Difference]: Without dead ends: 2014 [2023-11-29 04:05:37,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:05:37,791 INFO L413 NwaCegarLoop]: 1672 mSDtfsCounter, 4880 mSDsluCounter, 3336 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4880 SdHoareTripleChecker+Valid, 5008 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:05:37,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4880 Valid, 5008 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:05:37,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2023-11-29 04:05:37,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 1064. [2023-11-29 04:05:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 1063 states have (on average 1.650047036688617) internal successors, (1754), 1063 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states 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 04:05:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1754 transitions. [2023-11-29 04:05:37,817 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1754 transitions. Word has length 57 [2023-11-29 04:05:37,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:05:37,817 INFO L495 AbstractCegarLoop]: Abstraction has 1064 states and 1754 transitions. [2023-11-29 04:05:37,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 04:05:37,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1754 transitions. [2023-11-29 04:05:37,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2023-11-29 04:05:37,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:05:37,830 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:05:37,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:05:37,830 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:05:37,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:05:37,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1125200530, now seen corresponding path program 1 times [2023-11-29 04:05:37,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:05:37,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814778034] [2023-11-29 04:05:37,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:05:37,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:05:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:05:53,389 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:05:53,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:05:53,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814778034] [2023-11-29 04:05:53,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814778034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:05:53,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:05:53,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:05:53,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817819293] [2023-11-29 04:05:53,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:05:53,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:05:53,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:05:53,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:05:53,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:05:53,393 INFO L87 Difference]: Start difference. First operand 1064 states and 1754 transitions. Second operand has 5 states, 5 states have (on average 141.2) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states 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 04:05:53,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:05:53,763 INFO L93 Difference]: Finished difference Result 3018 states and 4994 transitions. [2023-11-29 04:05:53,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:05:53,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 141.2) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 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 706 [2023-11-29 04:05:53,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:05:53,768 INFO L225 Difference]: With dead ends: 3018 [2023-11-29 04:05:53,768 INFO L226 Difference]: Without dead ends: 2015 [2023-11-29 04:05:53,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:05:53,771 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 4859 mSDsluCounter, 3282 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4859 SdHoareTripleChecker+Valid, 4924 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:05:53,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4859 Valid, 4924 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:05:53,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2023-11-29 04:05:53,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1072. [2023-11-29 04:05:53,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.6451914098972922) internal successors, (1762), 1071 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states 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 04:05:53,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1762 transitions. [2023-11-29 04:05:53,795 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1762 transitions. Word has length 706 [2023-11-29 04:05:53,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:05:53,795 INFO L495 AbstractCegarLoop]: Abstraction has 1072 states and 1762 transitions. [2023-11-29 04:05:53,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.2) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states 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 04:05:53,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1762 transitions. [2023-11-29 04:05:53,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2023-11-29 04:05:53,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:05:53,810 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:05:53,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 04:05:53,810 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:05:53,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:05:53,811 INFO L85 PathProgramCache]: Analyzing trace with hash -437477768, now seen corresponding path program 1 times [2023-11-29 04:05:53,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:05:53,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538206125] [2023-11-29 04:05:53,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:05:53,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:03,781 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:06:03,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:06:03,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538206125] [2023-11-29 04:06:03,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538206125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:06:03,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:06:03,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:06:03,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849379502] [2023-11-29 04:06:03,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:06:03,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:06:03,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:06:03,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:06:03,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:06:03,786 INFO L87 Difference]: Start difference. First operand 1072 states and 1762 transitions. Second operand has 5 states, 5 states have (on average 141.4) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 04:06:04,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:06:04,148 INFO L93 Difference]: Finished difference Result 3018 states and 4993 transitions. [2023-11-29 04:06:04,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:06:04,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 141.4) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 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 707 [2023-11-29 04:06:04,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:06:04,153 INFO L225 Difference]: With dead ends: 3018 [2023-11-29 04:06:04,153 INFO L226 Difference]: Without dead ends: 2015 [2023-11-29 04:06:04,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:06:04,156 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 4830 mSDsluCounter, 3286 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4830 SdHoareTripleChecker+Valid, 4930 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:06:04,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4830 Valid, 4930 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:06:04,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2023-11-29 04:06:04,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1073. [2023-11-29 04:06:04,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1072 states have (on average 1.6445895522388059) internal successors, (1763), 1072 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states 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 04:06:04,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1763 transitions. [2023-11-29 04:06:04,189 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1763 transitions. Word has length 707 [2023-11-29 04:06:04,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:06:04,190 INFO L495 AbstractCegarLoop]: Abstraction has 1073 states and 1763 transitions. [2023-11-29 04:06:04,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.4) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 04:06:04,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1763 transitions. [2023-11-29 04:06:04,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2023-11-29 04:06:04,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:06:04,198 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:04,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 04:06:04,199 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:06:04,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:04,199 INFO L85 PathProgramCache]: Analyzing trace with hash 707842810, now seen corresponding path program 1 times [2023-11-29 04:06:04,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:04,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265638951] [2023-11-29 04:06:04,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:04,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:06:16,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:06:16,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265638951] [2023-11-29 04:06:16,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265638951] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:06:16,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142361727] [2023-11-29 04:06:16,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:16,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:16,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:06:16,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:06:16,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:06:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:17,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 4625 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-29 04:06:18,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:06:18,825 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:06:18,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:06:18,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142361727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:06:18,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:06:18,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 18 [2023-11-29 04:06:18,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595932158] [2023-11-29 04:06:18,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:06:18,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:06:18,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:06:18,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:06:18,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:06:18,831 INFO L87 Difference]: Start difference. First operand 1073 states and 1763 transitions. Second operand has 12 states, 12 states have (on average 58.916666666666664) internal successors, (707), 11 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 04:06:21,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:06:21,426 INFO L93 Difference]: Finished difference Result 4110 states and 6775 transitions. [2023-11-29 04:06:21,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 04:06:21,426 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 58.916666666666664) internal successors, (707), 11 states have internal predecessors, (707), 0 states have call successors, (0), 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 707 [2023-11-29 04:06:21,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:06:21,431 INFO L225 Difference]: With dead ends: 4110 [2023-11-29 04:06:21,431 INFO L226 Difference]: Without dead ends: 3107 [2023-11-29 04:06:21,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 697 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=206, Invalid=850, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 04:06:21,433 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 9746 mSDsluCounter, 12197 mSDsCounter, 0 mSdLazyCounter, 3389 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9746 SdHoareTripleChecker+Valid, 13585 SdHoareTripleChecker+Invalid, 3398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:06:21,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9746 Valid, 13585 Invalid, 3398 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 3389 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 04:06:21,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2023-11-29 04:06:21,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 1112. [2023-11-29 04:06:21,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 1.6363636363636365) internal successors, (1818), 1111 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states 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 04:06:21,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1818 transitions. [2023-11-29 04:06:21,473 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1818 transitions. Word has length 707 [2023-11-29 04:06:21,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:06:21,474 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 1818 transitions. [2023-11-29 04:06:21,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 58.916666666666664) internal successors, (707), 11 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 04:06:21,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1818 transitions. [2023-11-29 04:06:21,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2023-11-29 04:06:21,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:06:21,482 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:21,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:06:21,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 04:06:21,683 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:06:21,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:21,683 INFO L85 PathProgramCache]: Analyzing trace with hash -4864072, now seen corresponding path program 1 times [2023-11-29 04:06:21,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:21,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689238734] [2023-11-29 04:06:21,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:21,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:06:31,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:06:31,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689238734] [2023-11-29 04:06:31,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689238734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:06:31,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:06:31,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:06:31,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206117653] [2023-11-29 04:06:31,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:06:31,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:06:31,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:06:31,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:06:31,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:06:31,651 INFO L87 Difference]: Start difference. First operand 1112 states and 1818 transitions. Second operand has 9 states, 9 states have (on average 78.66666666666667) internal successors, (708), 8 states have internal predecessors, (708), 0 states have call successors, (0), 0 states 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 04:06:33,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:06:33,373 INFO L93 Difference]: Finished difference Result 3198 states and 5244 transitions. [2023-11-29 04:06:33,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:06:33,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 78.66666666666667) internal successors, (708), 8 states have internal predecessors, (708), 0 states have call successors, (0), 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 708 [2023-11-29 04:06:33,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:06:33,377 INFO L225 Difference]: With dead ends: 3198 [2023-11-29 04:06:33,377 INFO L226 Difference]: Without dead ends: 2153 [2023-11-29 04:06:33,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:06:33,380 INFO L413 NwaCegarLoop]: 1398 mSDtfsCounter, 6609 mSDsluCounter, 8601 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6609 SdHoareTripleChecker+Valid, 9999 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:06:33,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6609 Valid, 9999 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2040 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 04:06:33,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2023-11-29 04:06:33,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 1115. [2023-11-29 04:06:33,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.6346499102333931) internal successors, (1821), 1114 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states 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 04:06:33,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1821 transitions. [2023-11-29 04:06:33,410 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1821 transitions. Word has length 708 [2023-11-29 04:06:33,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:06:33,410 INFO L495 AbstractCegarLoop]: Abstraction has 1115 states and 1821 transitions. [2023-11-29 04:06:33,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 78.66666666666667) internal successors, (708), 8 states have internal predecessors, (708), 0 states have call successors, (0), 0 states 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 04:06:33,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1821 transitions. [2023-11-29 04:06:33,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2023-11-29 04:06:33,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:06:33,417 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:33,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 04:06:33,418 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:06:33,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:33,418 INFO L85 PathProgramCache]: Analyzing trace with hash -936454828, now seen corresponding path program 1 times [2023-11-29 04:06:33,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:33,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970554577] [2023-11-29 04:06:33,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:33,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:42,365 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:06:42,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:06:42,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970554577] [2023-11-29 04:06:42,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970554577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:06:42,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:06:42,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:06:42,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163417657] [2023-11-29 04:06:42,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:06:42,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:06:42,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:06:42,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:06:42,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:06:42,368 INFO L87 Difference]: Start difference. First operand 1115 states and 1821 transitions. Second operand has 6 states, 6 states have (on average 118.0) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states 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 04:06:42,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:06:42,589 INFO L93 Difference]: Finished difference Result 3193 states and 5236 transitions. [2023-11-29 04:06:42,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:06:42,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 118.0) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 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 708 [2023-11-29 04:06:42,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:06:42,594 INFO L225 Difference]: With dead ends: 3193 [2023-11-29 04:06:42,594 INFO L226 Difference]: Without dead ends: 2148 [2023-11-29 04:06:42,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:06:42,596 INFO L413 NwaCegarLoop]: 1712 mSDtfsCounter, 4986 mSDsluCounter, 5064 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4986 SdHoareTripleChecker+Valid, 6776 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:06:42,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4986 Valid, 6776 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:06:42,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2023-11-29 04:06:42,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 1112. [2023-11-29 04:06:42,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 1.6345634563456346) internal successors, (1816), 1111 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states 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 04:06:42,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1816 transitions. [2023-11-29 04:06:42,617 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1816 transitions. Word has length 708 [2023-11-29 04:06:42,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:06:42,617 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 1816 transitions. [2023-11-29 04:06:42,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.0) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states 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 04:06:42,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1816 transitions. [2023-11-29 04:06:42,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2023-11-29 04:06:42,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:06:42,622 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:42,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 04:06:42,623 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:06:42,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:42,623 INFO L85 PathProgramCache]: Analyzing trace with hash -445260448, now seen corresponding path program 1 times [2023-11-29 04:06:42,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:42,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079385201] [2023-11-29 04:06:42,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:42,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:06:55,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:06:55,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079385201] [2023-11-29 04:06:55,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079385201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:06:55,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:06:55,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:06:55,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557575915] [2023-11-29 04:06:55,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:06:55,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:06:55,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:06:55,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:06:55,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:06:55,649 INFO L87 Difference]: Start difference. First operand 1112 states and 1816 transitions. Second operand has 5 states, 5 states have (on average 141.8) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 0 states 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 04:06:55,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:06:55,971 INFO L93 Difference]: Finished difference Result 3096 states and 5094 transitions. [2023-11-29 04:06:55,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:06:55,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 141.8) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 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 709 [2023-11-29 04:06:55,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:06:55,976 INFO L225 Difference]: With dead ends: 3096 [2023-11-29 04:06:55,976 INFO L226 Difference]: Without dead ends: 2054 [2023-11-29 04:06:55,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:06:55,978 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 4746 mSDsluCounter, 3279 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4746 SdHoareTripleChecker+Valid, 4920 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:06:55,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4746 Valid, 4920 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:06:55,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2023-11-29 04:06:56,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1256. [2023-11-29 04:06:56,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 1255 states have (on average 1.6342629482071713) internal successors, (2051), 1255 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states 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 04:06:56,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 2051 transitions. [2023-11-29 04:06:56,010 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 2051 transitions. Word has length 709 [2023-11-29 04:06:56,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:06:56,011 INFO L495 AbstractCegarLoop]: Abstraction has 1256 states and 2051 transitions. [2023-11-29 04:06:56,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.8) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 0 states 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 04:06:56,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 2051 transitions. [2023-11-29 04:06:56,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2023-11-29 04:06:56,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:06:56,019 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:56,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 04:06:56,019 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:06:56,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:56,020 INFO L85 PathProgramCache]: Analyzing trace with hash -256987093, now seen corresponding path program 1 times [2023-11-29 04:06:56,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:56,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479550989] [2023-11-29 04:06:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:56,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:07:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:07:06,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:07:06,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479550989] [2023-11-29 04:07:06,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479550989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:07:06,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:07:06,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:07:06,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942844122] [2023-11-29 04:07:06,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:07:06,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:07:06,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:07:06,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:07:06,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:07:06,592 INFO L87 Difference]: Start difference. First operand 1256 states and 2051 transitions. Second operand has 5 states, 5 states have (on average 142.0) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 0 states 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 04:07:06,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:07:06,864 INFO L93 Difference]: Finished difference Result 3096 states and 5093 transitions. [2023-11-29 04:07:06,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:07:06,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 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 710 [2023-11-29 04:07:06,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:07:06,868 INFO L225 Difference]: With dead ends: 3096 [2023-11-29 04:07:06,869 INFO L226 Difference]: Without dead ends: 2054 [2023-11-29 04:07:06,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:07:06,871 INFO L413 NwaCegarLoop]: 1651 mSDtfsCounter, 4743 mSDsluCounter, 3299 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4743 SdHoareTripleChecker+Valid, 4950 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:07:06,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4743 Valid, 4950 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:07:06,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2023-11-29 04:07:06,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1257. [2023-11-29 04:07:06,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 1256 states have (on average 1.6337579617834395) internal successors, (2052), 1256 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states 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 04:07:06,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 2052 transitions. [2023-11-29 04:07:06,904 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 2052 transitions. Word has length 710 [2023-11-29 04:07:06,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:07:06,905 INFO L495 AbstractCegarLoop]: Abstraction has 1257 states and 2052 transitions. [2023-11-29 04:07:06,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 0 states 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 04:07:06,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 2052 transitions. [2023-11-29 04:07:06,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2023-11-29 04:07:06,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:07:06,912 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:07:06,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 04:07:06,913 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:07:06,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:07:06,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1065714515, now seen corresponding path program 1 times [2023-11-29 04:07:06,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:07:06,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108588247] [2023-11-29 04:07:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:06,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:07:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:07:19,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:07:19,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108588247] [2023-11-29 04:07:19,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108588247] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:07:19,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440345244] [2023-11-29 04:07:19,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:19,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:19,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:07:19,323 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:07:19,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:07:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:20,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 4635 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 04:07:20,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:07:22,085 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:07:22,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:07:23,368 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:07:23,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440345244] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:07:23,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:07:23,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2023-11-29 04:07:23,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936439610] [2023-11-29 04:07:23,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:07:23,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 04:07:23,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:07:23,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 04:07:23,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:07:23,373 INFO L87 Difference]: Start difference. First operand 1257 states and 2052 transitions. Second operand has 17 states, 17 states have (on average 86.47058823529412) internal successors, (1470), 16 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states 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 04:07:26,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:07:26,128 INFO L93 Difference]: Finished difference Result 6984 states and 11499 transitions. [2023-11-29 04:07:26,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 04:07:26,129 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 86.47058823529412) internal successors, (1470), 16 states have internal predecessors, (1470), 0 states have call successors, (0), 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 710 [2023-11-29 04:07:26,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:07:26,136 INFO L225 Difference]: With dead ends: 6984 [2023-11-29 04:07:26,136 INFO L226 Difference]: Without dead ends: 5942 [2023-11-29 04:07:26,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1441 GetRequests, 1410 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=754, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 04:07:26,139 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 32054 mSDsluCounter, 11277 mSDsCounter, 0 mSdLazyCounter, 3010 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32054 SdHoareTripleChecker+Valid, 12866 SdHoareTripleChecker+Invalid, 3013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:07:26,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32054 Valid, 12866 Invalid, 3013 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 3010 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 04:07:26,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5942 states. [2023-11-29 04:07:26,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5942 to 2145. [2023-11-29 04:07:26,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2145 states, 2144 states have (on average 1.640858208955224) internal successors, (3518), 2144 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states 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 04:07:26,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3518 transitions. [2023-11-29 04:07:26,194 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3518 transitions. Word has length 710 [2023-11-29 04:07:26,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:07:26,195 INFO L495 AbstractCegarLoop]: Abstraction has 2145 states and 3518 transitions. [2023-11-29 04:07:26,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 86.47058823529412) internal successors, (1470), 16 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states 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 04:07:26,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3518 transitions. [2023-11-29 04:07:26,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2023-11-29 04:07:26,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:07:26,202 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:07:26,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:07:26,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 04:07:26,403 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:07:26,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:07:26,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1652520529, now seen corresponding path program 1 times [2023-11-29 04:07:26,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:07:26,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441306455] [2023-11-29 04:07:26,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:26,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:07:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:07:40,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:07:40,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441306455] [2023-11-29 04:07:40,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441306455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:07:40,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:07:40,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:07:40,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775979858] [2023-11-29 04:07:40,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:07:40,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:07:40,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:07:40,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:07:40,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:07:40,459 INFO L87 Difference]: Start difference. First operand 2145 states and 3518 transitions. Second operand has 7 states, 7 states have (on average 101.42857142857143) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 0 states 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 04:07:40,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:07:40,663 INFO L93 Difference]: Finished difference Result 7888 states and 12976 transitions. [2023-11-29 04:07:40,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:07:40,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 101.42857142857143) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 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 710 [2023-11-29 04:07:40,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:07:40,668 INFO L225 Difference]: With dead ends: 7888 [2023-11-29 04:07:40,668 INFO L226 Difference]: Without dead ends: 5979 [2023-11-29 04:07:40,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:07:40,671 INFO L413 NwaCegarLoop]: 1977 mSDtfsCounter, 9063 mSDsluCounter, 7248 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9063 SdHoareTripleChecker+Valid, 9225 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:07:40,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9063 Valid, 9225 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:07:40,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5979 states. [2023-11-29 04:07:40,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5979 to 2153. [2023-11-29 04:07:40,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 1.6394052044609666) internal successors, (3528), 2152 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states 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 04:07:40,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3528 transitions. [2023-11-29 04:07:40,711 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3528 transitions. Word has length 710 [2023-11-29 04:07:40,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:07:40,712 INFO L495 AbstractCegarLoop]: Abstraction has 2153 states and 3528 transitions. [2023-11-29 04:07:40,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 101.42857142857143) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 0 states 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 04:07:40,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3528 transitions. [2023-11-29 04:07:40,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 712 [2023-11-29 04:07:40,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:07:40,718 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:07:40,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 04:07:40,718 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:07:40,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:07:40,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2110275228, now seen corresponding path program 1 times [2023-11-29 04:07:40,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:07:40,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935459368] [2023-11-29 04:07:40,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:40,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:07:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:08:01,927 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:08:01,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:08:01,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935459368] [2023-11-29 04:08:01,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935459368] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:08:01,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47071457] [2023-11-29 04:08:01,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:08:01,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:08:01,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:08:01,929 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:08:01,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014feb39-7730-4bba-8628-bdf5f48284f6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:08:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:08:05,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 4639 conjuncts, 154 conjunts are in the unsatisfiable core [2023-11-29 04:08:05,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:08:12,783 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:08:12,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:08:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:08:34,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47071457] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:08:34,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:08:34,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 30, 25] total 67 [2023-11-29 04:08:34,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012563157] [2023-11-29 04:08:34,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:08:34,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-11-29 04:08:34,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:08:34,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-11-29 04:08:34,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=4079, Unknown=3, NotChecked=0, Total=4556 [2023-11-29 04:08:34,779 INFO L87 Difference]: Start difference. First operand 2153 states and 3528 transitions. Second operand has 68 states, 68 states have (on average 31.13235294117647) internal successors, (2117), 67 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)