./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.at.4.prop1-back-serstep.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_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/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_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.at.4.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/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_2840b200-4cae-4ffa-a608-7354e7cf648a/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 a7e194716da6bbd8c1f9bf737a6eb7e3db7c6bfa8aa53ccb1f0dfa19bd09cabe --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:38:53,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:38:53,594 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 05:38:53,598 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:38:53,599 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:38:53,623 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:38:53,623 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:38:53,624 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:38:53,624 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:38:53,625 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:38:53,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:38:53,626 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:38:53,627 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:38:53,627 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:38:53,628 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:38:53,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:38:53,629 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:38:53,629 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:38:53,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:38:53,630 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:38:53,631 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:38:53,631 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:38:53,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:38:53,632 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:38:53,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:38:53,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:38:53,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:38:53,634 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:38:53,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:38:53,635 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:38:53,636 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:38:53,636 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:38:53,637 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:38:53,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:38:53,637 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:38:53,638 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:38:53,638 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:38:53,638 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:38:53,638 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:38:53,638 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_2840b200-4cae-4ffa-a608-7354e7cf648a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7e194716da6bbd8c1f9bf737a6eb7e3db7c6bfa8aa53ccb1f0dfa19bd09cabe [2023-11-29 05:38:53,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:38:53,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:38:53,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:38:53,908 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:38:53,908 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:38:53,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.at.4.prop1-back-serstep.c [2023-11-29 05:38:56,808 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:38:57,185 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:38:57,186 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.at.4.prop1-back-serstep.c [2023-11-29 05:38:57,214 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/data/f054f1022/c4f52f692aed4d6bb59006fcfd7dea5d/FLAGa20a85303 [2023-11-29 05:38:57,230 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/data/f054f1022/c4f52f692aed4d6bb59006fcfd7dea5d [2023-11-29 05:38:57,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:38:57,234 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:38:57,236 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:38:57,236 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:38:57,241 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:38:57,242 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:38:57" (1/1) ... [2023-11-29 05:38:57,243 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54fd263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:57, skipping insertion in model container [2023-11-29 05:38:57,243 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:38:57" (1/1) ... [2023-11-29 05:38:57,340 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:38:57,582 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_2840b200-4cae-4ffa-a608-7354e7cf648a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.at.4.prop1-back-serstep.c[1170,1183] [2023-11-29 05:38:58,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:38:58,251 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:38:58,263 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_2840b200-4cae-4ffa-a608-7354e7cf648a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.at.4.prop1-back-serstep.c[1170,1183] [2023-11-29 05:38:58,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:38:58,652 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:38:58,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:58 WrapperNode [2023-11-29 05:38:58,652 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:38:58,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:38:58,654 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:38:58,654 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:38:58,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:58" (1/1) ... [2023-11-29 05:38:58,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:58" (1/1) ... [2023-11-29 05:39:00,277 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 19162 [2023-11-29 05:39:00,278 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:39:00,279 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:39:00,279 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:39:00,279 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:39:00,290 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:58" (1/1) ... [2023-11-29 05:39:00,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:58" (1/1) ... [2023-11-29 05:39:00,677 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:58" (1/1) ... [2023-11-29 05:39:01,001 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 05:39:01,001 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:58" (1/1) ... [2023-11-29 05:39:01,001 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:58" (1/1) ... [2023-11-29 05:39:01,450 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:58" (1/1) ... [2023-11-29 05:39:01,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:58" (1/1) ... [2023-11-29 05:39:01,577 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:58" (1/1) ... [2023-11-29 05:39:01,638 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:58" (1/1) ... [2023-11-29 05:39:01,914 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:39:01,915 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:39:01,915 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:39:01,916 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:39:01,916 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:58" (1/1) ... [2023-11-29 05:39:01,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:39:01,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:39:01,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:39:01,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:39:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:39:01,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:39:01,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:39:01,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:39:02,781 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:39:02,784 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:39:13,920 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:39:14,150 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:39:14,150 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 05:39:14,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:39:14 BoogieIcfgContainer [2023-11-29 05:39:14,152 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:39:14,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:39:14,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:39:14,158 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:39:14,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:38:57" (1/3) ... [2023-11-29 05:39:14,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0ac8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:39:14, skipping insertion in model container [2023-11-29 05:39:14,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:58" (2/3) ... [2023-11-29 05:39:14,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0ac8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:39:14, skipping insertion in model container [2023-11-29 05:39:14,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:39:14" (3/3) ... [2023-11-29 05:39:14,161 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.at.4.prop1-back-serstep.c [2023-11-29 05:39:14,176 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:39:14,177 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:39:14,281 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:39:14,288 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;@4a42ec3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:39:14,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:39:14,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 4250 states, 4248 states have (on average 1.6666666666666667) internal successors, (7080), 4249 states have internal predecessors, (7080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:14,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2023-11-29 05:39:14,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:14,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:14,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:14,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:14,355 INFO L85 PathProgramCache]: Analyzing trace with hash -455754560, now seen corresponding path program 1 times [2023-11-29 05:39:14,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:14,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878779112] [2023-11-29 05:39:14,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:14,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:18,074 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 05:39:18,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:18,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878779112] [2023-11-29 05:39:18,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878779112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:18,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:18,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:18,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446506588] [2023-11-29 05:39:18,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:18,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:18,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:18,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:18,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:18,134 INFO L87 Difference]: Start difference. First operand has 4250 states, 4248 states have (on average 1.6666666666666667) internal successors, (7080), 4249 states have internal predecessors, (7080), 0 states have call successors, (0), 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 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:18,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:18,489 INFO L93 Difference]: Finished difference Result 8286 states and 13806 transitions. [2023-11-29 05:39:18,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:39:18,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 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 666 [2023-11-29 05:39:18,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:18,538 INFO L225 Difference]: With dead ends: 8286 [2023-11-29 05:39:18,538 INFO L226 Difference]: Without dead ends: 4250 [2023-11-29 05:39:18,550 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 05:39:18,554 INFO L413 NwaCegarLoop]: 7073 mSDtfsCounter, 1 mSDsluCounter, 14141 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21214 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:18,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21214 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:39:18,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4250 states. [2023-11-29 05:39:18,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4250 to 4250. [2023-11-29 05:39:18,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4250 states, 4249 states have (on average 1.6658037185220052) internal successors, (7078), 4249 states have internal predecessors, (7078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:18,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4250 states to 4250 states and 7078 transitions. [2023-11-29 05:39:18,767 INFO L78 Accepts]: Start accepts. Automaton has 4250 states and 7078 transitions. Word has length 666 [2023-11-29 05:39:18,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:18,769 INFO L495 AbstractCegarLoop]: Abstraction has 4250 states and 7078 transitions. [2023-11-29 05:39:18,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:18,770 INFO L276 IsEmpty]: Start isEmpty. Operand 4250 states and 7078 transitions. [2023-11-29 05:39:18,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-11-29 05:39:18,798 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:18,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:18,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:39:18,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:18,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:18,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1241760552, now seen corresponding path program 1 times [2023-11-29 05:39:18,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:18,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146380564] [2023-11-29 05:39:18,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:18,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:20,213 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 05:39:20,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:20,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146380564] [2023-11-29 05:39:20,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146380564] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:20,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:20,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:20,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458023151] [2023-11-29 05:39:20,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:20,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:20,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:20,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:20,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:20,220 INFO L87 Difference]: Start difference. First operand 4250 states and 7078 transitions. Second operand has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:20,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:20,437 INFO L93 Difference]: Finished difference Result 8289 states and 13804 transitions. [2023-11-29 05:39:20,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:39:20,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 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 667 [2023-11-29 05:39:20,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:20,459 INFO L225 Difference]: With dead ends: 8289 [2023-11-29 05:39:20,460 INFO L226 Difference]: Without dead ends: 4253 [2023-11-29 05:39:20,465 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 05:39:20,466 INFO L413 NwaCegarLoop]: 7073 mSDtfsCounter, 1 mSDsluCounter, 14139 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21212 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:20,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21212 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:20,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2023-11-29 05:39:20,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 4252. [2023-11-29 05:39:20,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4252 states, 4251 states have (on average 1.6654904728299225) internal successors, (7080), 4251 states have internal predecessors, (7080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:20,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4252 states to 4252 states and 7080 transitions. [2023-11-29 05:39:20,575 INFO L78 Accepts]: Start accepts. Automaton has 4252 states and 7080 transitions. Word has length 667 [2023-11-29 05:39:20,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:20,577 INFO L495 AbstractCegarLoop]: Abstraction has 4252 states and 7080 transitions. [2023-11-29 05:39:20,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:20,577 INFO L276 IsEmpty]: Start isEmpty. Operand 4252 states and 7080 transitions. [2023-11-29 05:39:20,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-11-29 05:39:20,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:20,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:20,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:39:20,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:20,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:20,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1724707420, now seen corresponding path program 1 times [2023-11-29 05:39:20,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:20,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383756516] [2023-11-29 05:39:20,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:20,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:22,153 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 05:39:22,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:22,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383756516] [2023-11-29 05:39:22,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383756516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:22,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:22,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:22,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623034096] [2023-11-29 05:39:22,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:22,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:22,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:22,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:22,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:22,159 INFO L87 Difference]: Start difference. First operand 4252 states and 7080 transitions. Second operand has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:22,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:22,544 INFO L93 Difference]: Finished difference Result 12322 states and 20519 transitions. [2023-11-29 05:39:22,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:39:22,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 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 668 [2023-11-29 05:39:22,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:22,600 INFO L225 Difference]: With dead ends: 12322 [2023-11-29 05:39:22,600 INFO L226 Difference]: Without dead ends: 8284 [2023-11-29 05:39:22,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:39:22,609 INFO L413 NwaCegarLoop]: 8363 mSDtfsCounter, 6711 mSDsluCounter, 15427 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6711 SdHoareTripleChecker+Valid, 23790 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:22,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6711 Valid, 23790 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:22,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2023-11-29 05:39:22,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 4254. [2023-11-29 05:39:22,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4254 states, 4253 states have (on average 1.6651775217493534) internal successors, (7082), 4253 states have internal predecessors, (7082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:22,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4254 states to 4254 states and 7082 transitions. [2023-11-29 05:39:22,754 INFO L78 Accepts]: Start accepts. Automaton has 4254 states and 7082 transitions. Word has length 668 [2023-11-29 05:39:22,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:22,755 INFO L495 AbstractCegarLoop]: Abstraction has 4254 states and 7082 transitions. [2023-11-29 05:39:22,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:22,756 INFO L276 IsEmpty]: Start isEmpty. Operand 4254 states and 7082 transitions. [2023-11-29 05:39:22,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-29 05:39:22,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:22,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:22,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:39:22,765 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:22,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:22,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1815619904, now seen corresponding path program 1 times [2023-11-29 05:39:22,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:22,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968435074] [2023-11-29 05:39:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:22,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:24,118 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 05:39:24,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:24,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968435074] [2023-11-29 05:39:24,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968435074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:24,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:24,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:24,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801088281] [2023-11-29 05:39:24,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:24,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:24,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:24,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:24,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:24,124 INFO L87 Difference]: Start difference. First operand 4254 states and 7082 transitions. Second operand has 4 states, 4 states have (on average 167.25) internal successors, (669), 4 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:24,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:24,418 INFO L93 Difference]: Finished difference Result 12325 states and 20520 transitions. [2023-11-29 05:39:24,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:39:24,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 167.25) internal successors, (669), 4 states have internal predecessors, (669), 0 states have call successors, (0), 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 669 [2023-11-29 05:39:24,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:24,472 INFO L225 Difference]: With dead ends: 12325 [2023-11-29 05:39:24,473 INFO L226 Difference]: Without dead ends: 8285 [2023-11-29 05:39:24,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:39:24,482 INFO L413 NwaCegarLoop]: 8358 mSDtfsCounter, 6708 mSDsluCounter, 15422 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6708 SdHoareTripleChecker+Valid, 23780 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:24,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6708 Valid, 23780 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:24,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8285 states. [2023-11-29 05:39:24,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8285 to 4256. [2023-11-29 05:39:24,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4255 states have (on average 1.664864864864865) internal successors, (7084), 4255 states have internal predecessors, (7084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:24,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 7084 transitions. [2023-11-29 05:39:24,633 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 7084 transitions. Word has length 669 [2023-11-29 05:39:24,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:24,634 INFO L495 AbstractCegarLoop]: Abstraction has 4256 states and 7084 transitions. [2023-11-29 05:39:24,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.25) internal successors, (669), 4 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:24,635 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 7084 transitions. [2023-11-29 05:39:24,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2023-11-29 05:39:24,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:24,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:24,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:39:24,643 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:24,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:24,644 INFO L85 PathProgramCache]: Analyzing trace with hash 250842998, now seen corresponding path program 1 times [2023-11-29 05:39:24,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:24,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874572332] [2023-11-29 05:39:24,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:24,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:25,986 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 05:39:25,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:25,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874572332] [2023-11-29 05:39:25,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874572332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:25,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:25,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:25,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762467862] [2023-11-29 05:39:25,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:25,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:25,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:25,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:25,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:25,991 INFO L87 Difference]: Start difference. First operand 4256 states and 7084 transitions. Second operand has 4 states, 4 states have (on average 167.5) internal successors, (670), 4 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:26,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:26,258 INFO L93 Difference]: Finished difference Result 12328 states and 20521 transitions. [2023-11-29 05:39:26,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:39:26,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 167.5) internal successors, (670), 4 states have internal predecessors, (670), 0 states have call successors, (0), 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 670 [2023-11-29 05:39:26,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:26,278 INFO L225 Difference]: With dead ends: 12328 [2023-11-29 05:39:26,278 INFO L226 Difference]: Without dead ends: 8286 [2023-11-29 05:39:26,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:39:26,287 INFO L413 NwaCegarLoop]: 8353 mSDtfsCounter, 6705 mSDsluCounter, 15417 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6705 SdHoareTripleChecker+Valid, 23770 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:26,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6705 Valid, 23770 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:39:26,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8286 states. [2023-11-29 05:39:26,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8286 to 4258. [2023-11-29 05:39:26,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4258 states, 4257 states have (on average 1.6645525017618041) internal successors, (7086), 4257 states have internal predecessors, (7086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:26,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4258 states to 4258 states and 7086 transitions. [2023-11-29 05:39:26,414 INFO L78 Accepts]: Start accepts. Automaton has 4258 states and 7086 transitions. Word has length 670 [2023-11-29 05:39:26,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:26,416 INFO L495 AbstractCegarLoop]: Abstraction has 4258 states and 7086 transitions. [2023-11-29 05:39:26,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.5) internal successors, (670), 4 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:26,416 INFO L276 IsEmpty]: Start isEmpty. Operand 4258 states and 7086 transitions. [2023-11-29 05:39:26,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2023-11-29 05:39:26,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:26,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:26,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:39:26,424 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:26,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:26,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1273810650, now seen corresponding path program 1 times [2023-11-29 05:39:26,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:26,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646010925] [2023-11-29 05:39:26,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:26,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:27,584 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 05:39:27,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:27,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646010925] [2023-11-29 05:39:27,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646010925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:27,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:27,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:27,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791489974] [2023-11-29 05:39:27,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:27,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:27,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:27,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:27,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:27,589 INFO L87 Difference]: Start difference. First operand 4258 states and 7086 transitions. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:27,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:27,761 INFO L93 Difference]: Finished difference Result 12331 states and 20522 transitions. [2023-11-29 05:39:27,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:39:27,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 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 671 [2023-11-29 05:39:27,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:27,775 INFO L225 Difference]: With dead ends: 12331 [2023-11-29 05:39:27,775 INFO L226 Difference]: Without dead ends: 8287 [2023-11-29 05:39:27,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:39:27,782 INFO L413 NwaCegarLoop]: 8348 mSDtfsCounter, 6702 mSDsluCounter, 15412 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6702 SdHoareTripleChecker+Valid, 23760 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:27,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6702 Valid, 23760 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:27,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8287 states. [2023-11-29 05:39:27,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8287 to 4260. [2023-11-29 05:39:27,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4260 states, 4259 states have (on average 1.6642404320262973) internal successors, (7088), 4259 states have internal predecessors, (7088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:27,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 7088 transitions. [2023-11-29 05:39:27,873 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 7088 transitions. Word has length 671 [2023-11-29 05:39:27,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:27,874 INFO L495 AbstractCegarLoop]: Abstraction has 4260 states and 7088 transitions. [2023-11-29 05:39:27,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:27,875 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 7088 transitions. [2023-11-29 05:39:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2023-11-29 05:39:27,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:27,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:27,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:39:27,883 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:27,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:27,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2091642386, now seen corresponding path program 1 times [2023-11-29 05:39:27,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:27,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643545747] [2023-11-29 05:39:27,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:27,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:28,750 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 05:39:28,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:28,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643545747] [2023-11-29 05:39:28,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643545747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:28,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:28,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:28,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654324786] [2023-11-29 05:39:28,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:28,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:28,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:28,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:28,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:28,753 INFO L87 Difference]: Start difference. First operand 4260 states and 7088 transitions. Second operand has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:28,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:28,919 INFO L93 Difference]: Finished difference Result 12334 states and 20523 transitions. [2023-11-29 05:39:28,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:39:28,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 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 672 [2023-11-29 05:39:28,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:28,932 INFO L225 Difference]: With dead ends: 12334 [2023-11-29 05:39:28,932 INFO L226 Difference]: Without dead ends: 8288 [2023-11-29 05:39:28,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:39:28,939 INFO L413 NwaCegarLoop]: 8343 mSDtfsCounter, 6699 mSDsluCounter, 15407 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6699 SdHoareTripleChecker+Valid, 23750 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:28,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6699 Valid, 23750 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:28,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8288 states. [2023-11-29 05:39:29,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8288 to 4262. [2023-11-29 05:39:29,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4262 states, 4261 states have (on average 1.6639286552452477) internal successors, (7090), 4261 states have internal predecessors, (7090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4262 states to 4262 states and 7090 transitions. [2023-11-29 05:39:29,025 INFO L78 Accepts]: Start accepts. Automaton has 4262 states and 7090 transitions. Word has length 672 [2023-11-29 05:39:29,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:29,026 INFO L495 AbstractCegarLoop]: Abstraction has 4262 states and 7090 transitions. [2023-11-29 05:39:29,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:29,027 INFO L276 IsEmpty]: Start isEmpty. Operand 4262 states and 7090 transitions. [2023-11-29 05:39:29,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2023-11-29 05:39:29,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:29,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:29,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:39:29,033 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:29,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:29,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1391628658, now seen corresponding path program 1 times [2023-11-29 05:39:29,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:29,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951484714] [2023-11-29 05:39:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:29,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:29,896 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 05:39:29,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:29,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951484714] [2023-11-29 05:39:29,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951484714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:29,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:29,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:29,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412658] [2023-11-29 05:39:29,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:29,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:29,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:29,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:29,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:29,900 INFO L87 Difference]: Start difference. First operand 4262 states and 7090 transitions. Second operand has 4 states, 4 states have (on average 168.25) internal successors, (673), 4 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:30,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:30,066 INFO L93 Difference]: Finished difference Result 12337 states and 20524 transitions. [2023-11-29 05:39:30,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:39:30,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 168.25) internal successors, (673), 4 states have internal predecessors, (673), 0 states have call successors, (0), 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 673 [2023-11-29 05:39:30,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:30,079 INFO L225 Difference]: With dead ends: 12337 [2023-11-29 05:39:30,079 INFO L226 Difference]: Without dead ends: 8289 [2023-11-29 05:39:30,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:39:30,086 INFO L413 NwaCegarLoop]: 8338 mSDtfsCounter, 6696 mSDsluCounter, 15402 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6696 SdHoareTripleChecker+Valid, 23740 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:30,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6696 Valid, 23740 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:30,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8289 states. [2023-11-29 05:39:30,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8289 to 4264. [2023-11-29 05:39:30,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4263 states have (on average 1.6636171710063337) internal successors, (7092), 4263 states have internal predecessors, (7092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:30,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 7092 transitions. [2023-11-29 05:39:30,163 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 7092 transitions. Word has length 673 [2023-11-29 05:39:30,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:30,164 INFO L495 AbstractCegarLoop]: Abstraction has 4264 states and 7092 transitions. [2023-11-29 05:39:30,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.25) internal successors, (673), 4 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:30,165 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 7092 transitions. [2023-11-29 05:39:30,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2023-11-29 05:39:30,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:30,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:30,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:39:30,170 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:30,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:30,171 INFO L85 PathProgramCache]: Analyzing trace with hash 483239724, now seen corresponding path program 1 times [2023-11-29 05:39:30,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:30,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311146299] [2023-11-29 05:39:30,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:30,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:31,316 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 05:39:31,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:31,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311146299] [2023-11-29 05:39:31,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311146299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:31,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:31,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:39:31,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842050273] [2023-11-29 05:39:31,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:31,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:39:31,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:31,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:39:31,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:39:31,320 INFO L87 Difference]: Start difference. First operand 4264 states and 7092 transitions. Second operand has 6 states, 6 states have (on average 112.33333333333333) internal successors, (674), 5 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:35,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:35,545 INFO L93 Difference]: Finished difference Result 19353 states and 31959 transitions. [2023-11-29 05:39:35,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:39:35,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 112.33333333333333) internal successors, (674), 5 states have internal predecessors, (674), 0 states have call successors, (0), 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 674 [2023-11-29 05:39:35,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:35,557 INFO L225 Difference]: With dead ends: 19353 [2023-11-29 05:39:35,558 INFO L226 Difference]: Without dead ends: 8314 [2023-11-29 05:39:35,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:39:35,569 INFO L413 NwaCegarLoop]: 6959 mSDtfsCounter, 46137 mSDsluCounter, 18793 mSDsCounter, 0 mSdLazyCounter, 3151 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46137 SdHoareTripleChecker+Valid, 25752 SdHoareTripleChecker+Invalid, 3841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 3151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:35,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46137 Valid, 25752 Invalid, 3841 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [690 Valid, 3151 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-29 05:39:35,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8314 states. [2023-11-29 05:39:35,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8314 to 4674. [2023-11-29 05:39:35,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4674 states, 4673 states have (on average 1.663599400813182) internal successors, (7774), 4673 states have internal predecessors, (7774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:35,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 7774 transitions. [2023-11-29 05:39:35,682 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 7774 transitions. Word has length 674 [2023-11-29 05:39:35,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:35,683 INFO L495 AbstractCegarLoop]: Abstraction has 4674 states and 7774 transitions. [2023-11-29 05:39:35,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.33333333333333) internal successors, (674), 5 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:35,683 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 7774 transitions. [2023-11-29 05:39:35,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2023-11-29 05:39:35,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:35,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:35,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:39:35,691 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:35,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:35,692 INFO L85 PathProgramCache]: Analyzing trace with hash 408436358, now seen corresponding path program 1 times [2023-11-29 05:39:35,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:35,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638063481] [2023-11-29 05:39:35,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:35,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:36,832 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 05:39:36,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:36,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638063481] [2023-11-29 05:39:36,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638063481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:36,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:36,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:36,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538079564] [2023-11-29 05:39:36,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:36,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:36,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:36,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:36,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:36,837 INFO L87 Difference]: Start difference. First operand 4674 states and 7774 transitions. Second operand has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:36,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:36,992 INFO L93 Difference]: Finished difference Result 12750 states and 21207 transitions. [2023-11-29 05:39:36,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:39:36,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 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 675 [2023-11-29 05:39:36,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:37,002 INFO L225 Difference]: With dead ends: 12750 [2023-11-29 05:39:37,002 INFO L226 Difference]: Without dead ends: 8700 [2023-11-29 05:39:37,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:39:37,009 INFO L413 NwaCegarLoop]: 8332 mSDtfsCounter, 6693 mSDsluCounter, 15396 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6693 SdHoareTripleChecker+Valid, 23728 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:37,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6693 Valid, 23728 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:37,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8700 states. [2023-11-29 05:39:37,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8700 to 4676. [2023-11-29 05:39:37,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4676 states, 4675 states have (on average 1.6633155080213904) internal successors, (7776), 4675 states have internal predecessors, (7776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 7776 transitions. [2023-11-29 05:39:37,097 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 7776 transitions. Word has length 675 [2023-11-29 05:39:37,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:37,098 INFO L495 AbstractCegarLoop]: Abstraction has 4676 states and 7776 transitions. [2023-11-29 05:39:37,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:37,098 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 7776 transitions. [2023-11-29 05:39:37,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2023-11-29 05:39:37,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:37,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:37,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:39:37,104 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:37,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:37,105 INFO L85 PathProgramCache]: Analyzing trace with hash -2107339174, now seen corresponding path program 1 times [2023-11-29 05:39:37,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:37,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887061597] [2023-11-29 05:39:37,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:37,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:38,108 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 05:39:38,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:38,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887061597] [2023-11-29 05:39:38,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887061597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:38,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:38,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:38,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999137663] [2023-11-29 05:39:38,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:38,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:38,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:38,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:38,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:38,112 INFO L87 Difference]: Start difference. First operand 4676 states and 7776 transitions. Second operand has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:38,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:38,276 INFO L93 Difference]: Finished difference Result 12753 states and 21208 transitions. [2023-11-29 05:39:38,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:39:38,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 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 676 [2023-11-29 05:39:38,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:38,284 INFO L225 Difference]: With dead ends: 12753 [2023-11-29 05:39:38,284 INFO L226 Difference]: Without dead ends: 8701 [2023-11-29 05:39:38,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:39:38,290 INFO L413 NwaCegarLoop]: 8327 mSDtfsCounter, 6690 mSDsluCounter, 15391 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6690 SdHoareTripleChecker+Valid, 23718 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:38,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6690 Valid, 23718 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:38,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8701 states. [2023-11-29 05:39:38,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8701 to 4678. [2023-11-29 05:39:38,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4678 states, 4677 states have (on average 1.663031858028651) internal successors, (7778), 4677 states have internal predecessors, (7778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4678 states to 4678 states and 7778 transitions. [2023-11-29 05:39:38,398 INFO L78 Accepts]: Start accepts. Automaton has 4678 states and 7778 transitions. Word has length 676 [2023-11-29 05:39:38,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:38,399 INFO L495 AbstractCegarLoop]: Abstraction has 4678 states and 7778 transitions. [2023-11-29 05:39:38,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:38,399 INFO L276 IsEmpty]: Start isEmpty. Operand 4678 states and 7778 transitions. [2023-11-29 05:39:38,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-11-29 05:39:38,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:38,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:38,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:39:38,407 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:38,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:38,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1854035874, now seen corresponding path program 1 times [2023-11-29 05:39:38,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:38,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631584893] [2023-11-29 05:39:38,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:38,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:39,457 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 05:39:39,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:39,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631584893] [2023-11-29 05:39:39,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631584893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:39,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:39,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:39,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472896755] [2023-11-29 05:39:39,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:39,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:39,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:39,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:39,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:39,460 INFO L87 Difference]: Start difference. First operand 4678 states and 7778 transitions. Second operand has 4 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:39,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:39,616 INFO L93 Difference]: Finished difference Result 12756 states and 21209 transitions. [2023-11-29 05:39:39,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:39:39,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 0 states have call successors, (0), 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 677 [2023-11-29 05:39:39,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:39,625 INFO L225 Difference]: With dead ends: 12756 [2023-11-29 05:39:39,625 INFO L226 Difference]: Without dead ends: 8702 [2023-11-29 05:39:39,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:39:39,630 INFO L413 NwaCegarLoop]: 8322 mSDtfsCounter, 6687 mSDsluCounter, 15386 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6687 SdHoareTripleChecker+Valid, 23708 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:39,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6687 Valid, 23708 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:39,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8702 states. [2023-11-29 05:39:39,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8702 to 4680. [2023-11-29 05:39:39,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4680 states, 4679 states have (on average 1.662748450523616) internal successors, (7780), 4679 states have internal predecessors, (7780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:39,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4680 states to 4680 states and 7780 transitions. [2023-11-29 05:39:39,707 INFO L78 Accepts]: Start accepts. Automaton has 4680 states and 7780 transitions. Word has length 677 [2023-11-29 05:39:39,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:39,708 INFO L495 AbstractCegarLoop]: Abstraction has 4680 states and 7780 transitions. [2023-11-29 05:39:39,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:39,708 INFO L276 IsEmpty]: Start isEmpty. Operand 4680 states and 7780 transitions. [2023-11-29 05:39:39,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2023-11-29 05:39:39,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:39,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:39,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:39:39,714 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:39,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:39,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1329087678, now seen corresponding path program 1 times [2023-11-29 05:39:39,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:39,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696594321] [2023-11-29 05:39:39,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:39,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:40,562 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 05:39:40,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:40,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696594321] [2023-11-29 05:39:40,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696594321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:40,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:40,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:40,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835970883] [2023-11-29 05:39:40,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:40,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:40,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:40,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:40,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:40,567 INFO L87 Difference]: Start difference. First operand 4680 states and 7780 transitions. Second operand has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:40,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:40,734 INFO L93 Difference]: Finished difference Result 12759 states and 21210 transitions. [2023-11-29 05:39:40,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:39:40,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 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 678 [2023-11-29 05:39:40,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:40,745 INFO L225 Difference]: With dead ends: 12759 [2023-11-29 05:39:40,746 INFO L226 Difference]: Without dead ends: 8703 [2023-11-29 05:39:40,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:39:40,753 INFO L413 NwaCegarLoop]: 8312 mSDtfsCounter, 6682 mSDsluCounter, 15376 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6682 SdHoareTripleChecker+Valid, 23688 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:40,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6682 Valid, 23688 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:40,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8703 states. [2023-11-29 05:39:40,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8703 to 4685. [2023-11-29 05:39:40,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4685 states, 4684 states have (on average 1.662467976088813) internal successors, (7787), 4684 states have internal predecessors, (7787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:40,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 7787 transitions. [2023-11-29 05:39:40,857 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 7787 transitions. Word has length 678 [2023-11-29 05:39:40,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:40,858 INFO L495 AbstractCegarLoop]: Abstraction has 4685 states and 7787 transitions. [2023-11-29 05:39:40,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:40,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 7787 transitions. [2023-11-29 05:39:40,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2023-11-29 05:39:40,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:40,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:40,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:39:40,866 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:40,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:40,867 INFO L85 PathProgramCache]: Analyzing trace with hash 621851222, now seen corresponding path program 1 times [2023-11-29 05:39:40,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:40,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889160681] [2023-11-29 05:39:40,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:40,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:41,824 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 05:39:41,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:41,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889160681] [2023-11-29 05:39:41,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889160681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:41,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:41,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:41,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952919542] [2023-11-29 05:39:41,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:41,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:41,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:41,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:41,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:41,828 INFO L87 Difference]: Start difference. First operand 4685 states and 7787 transitions. Second operand has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:42,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:42,045 INFO L93 Difference]: Finished difference Result 12768 states and 21221 transitions. [2023-11-29 05:39:42,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:39:42,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 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 679 [2023-11-29 05:39:42,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:42,052 INFO L225 Difference]: With dead ends: 12768 [2023-11-29 05:39:42,052 INFO L226 Difference]: Without dead ends: 8707 [2023-11-29 05:39:42,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:39:42,058 INFO L413 NwaCegarLoop]: 8302 mSDtfsCounter, 6679 mSDsluCounter, 15366 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6679 SdHoareTripleChecker+Valid, 23668 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:42,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6679 Valid, 23668 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:42,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8707 states. [2023-11-29 05:39:42,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8707 to 4690. [2023-11-29 05:39:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4690 states, 4689 states have (on average 1.6621880998080614) internal successors, (7794), 4689 states have internal predecessors, (7794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:42,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4690 states to 4690 states and 7794 transitions. [2023-11-29 05:39:42,128 INFO L78 Accepts]: Start accepts. Automaton has 4690 states and 7794 transitions. Word has length 679 [2023-11-29 05:39:42,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:42,129 INFO L495 AbstractCegarLoop]: Abstraction has 4690 states and 7794 transitions. [2023-11-29 05:39:42,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:42,129 INFO L276 IsEmpty]: Start isEmpty. Operand 4690 states and 7794 transitions. [2023-11-29 05:39:42,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2023-11-29 05:39:42,133 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:42,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:42,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:39:42,134 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:42,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:42,134 INFO L85 PathProgramCache]: Analyzing trace with hash -26425458, now seen corresponding path program 1 times [2023-11-29 05:39:42,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:42,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323811338] [2023-11-29 05:39:42,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:42,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:42,984 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 05:39:42,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:42,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323811338] [2023-11-29 05:39:42,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323811338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:42,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:42,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:42,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941332157] [2023-11-29 05:39:42,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:42,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:42,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:42,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:42,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:42,988 INFO L87 Difference]: Start difference. First operand 4690 states and 7794 transitions. Second operand has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:43,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:43,138 INFO L93 Difference]: Finished difference Result 12773 states and 21226 transitions. [2023-11-29 05:39:43,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:39:43,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 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 680 [2023-11-29 05:39:43,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:43,149 INFO L225 Difference]: With dead ends: 12773 [2023-11-29 05:39:43,149 INFO L226 Difference]: Without dead ends: 8707 [2023-11-29 05:39:43,153 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 05:39:43,154 INFO L413 NwaCegarLoop]: 8293 mSDtfsCounter, 6673 mSDsluCounter, 15355 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6673 SdHoareTripleChecker+Valid, 23648 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:43,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6673 Valid, 23648 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:43,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8707 states. [2023-11-29 05:39:43,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8707 to 4692. [2023-11-29 05:39:43,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4692 states, 4691 states have (on average 1.6619057770198251) internal successors, (7796), 4691 states have internal predecessors, (7796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:43,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 7796 transitions. [2023-11-29 05:39:43,220 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 7796 transitions. Word has length 680 [2023-11-29 05:39:43,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:43,221 INFO L495 AbstractCegarLoop]: Abstraction has 4692 states and 7796 transitions. [2023-11-29 05:39:43,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:43,222 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 7796 transitions. [2023-11-29 05:39:43,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2023-11-29 05:39:43,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:43,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:43,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 05:39:43,227 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:43,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:43,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1237742448, now seen corresponding path program 1 times [2023-11-29 05:39:43,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:43,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056671874] [2023-11-29 05:39:43,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:43,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:44,064 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 05:39:44,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:44,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056671874] [2023-11-29 05:39:44,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056671874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:44,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:44,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:44,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197197976] [2023-11-29 05:39:44,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:44,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:44,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:44,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:44,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:44,068 INFO L87 Difference]: Start difference. First operand 4692 states and 7796 transitions. Second operand has 4 states, 4 states have (on average 170.25) internal successors, (681), 4 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:44,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:44,233 INFO L93 Difference]: Finished difference Result 12783 states and 21238 transitions. [2023-11-29 05:39:44,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:39:44,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 170.25) internal successors, (681), 4 states have internal predecessors, (681), 0 states have call successors, (0), 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 681 [2023-11-29 05:39:44,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:44,241 INFO L225 Difference]: With dead ends: 12783 [2023-11-29 05:39:44,241 INFO L226 Difference]: Without dead ends: 8715 [2023-11-29 05:39:44,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:39:44,245 INFO L413 NwaCegarLoop]: 8292 mSDtfsCounter, 6675 mSDsluCounter, 15356 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6675 SdHoareTripleChecker+Valid, 23648 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:44,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6675 Valid, 23648 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:44,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8715 states. [2023-11-29 05:39:44,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8715 to 4695. [2023-11-29 05:39:44,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4695 states, 4694 states have (on average 1.661908819769919) internal successors, (7801), 4694 states have internal predecessors, (7801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:44,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4695 states to 4695 states and 7801 transitions. [2023-11-29 05:39:44,319 INFO L78 Accepts]: Start accepts. Automaton has 4695 states and 7801 transitions. Word has length 681 [2023-11-29 05:39:44,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:44,320 INFO L495 AbstractCegarLoop]: Abstraction has 4695 states and 7801 transitions. [2023-11-29 05:39:44,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.25) internal successors, (681), 4 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:44,320 INFO L276 IsEmpty]: Start isEmpty. Operand 4695 states and 7801 transitions. [2023-11-29 05:39:44,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2023-11-29 05:39:44,327 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:44,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:44,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 05:39:44,328 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:44,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:44,329 INFO L85 PathProgramCache]: Analyzing trace with hash 191675252, now seen corresponding path program 1 times [2023-11-29 05:39:44,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:44,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276309166] [2023-11-29 05:39:44,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:44,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:45,182 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 05:39:45,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:45,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276309166] [2023-11-29 05:39:45,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276309166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:45,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:45,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:45,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909773589] [2023-11-29 05:39:45,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:45,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:45,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:45,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:45,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:45,186 INFO L87 Difference]: Start difference. First operand 4695 states and 7801 transitions. Second operand has 4 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:45,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:45,337 INFO L93 Difference]: Finished difference Result 12786 states and 21243 transitions. [2023-11-29 05:39:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:39:45,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 682 [2023-11-29 05:39:45,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:45,347 INFO L225 Difference]: With dead ends: 12786 [2023-11-29 05:39:45,347 INFO L226 Difference]: Without dead ends: 8715 [2023-11-29 05:39:45,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:39:45,352 INFO L413 NwaCegarLoop]: 8282 mSDtfsCounter, 6673 mSDsluCounter, 15346 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6673 SdHoareTripleChecker+Valid, 23628 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:45,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6673 Valid, 23628 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:45,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8715 states. [2023-11-29 05:39:45,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8715 to 4700. [2023-11-29 05:39:45,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4700 states, 4699 states have (on average 1.6616301340710788) internal successors, (7808), 4699 states have internal predecessors, (7808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:45,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7808 transitions. [2023-11-29 05:39:45,428 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7808 transitions. Word has length 682 [2023-11-29 05:39:45,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:45,429 INFO L495 AbstractCegarLoop]: Abstraction has 4700 states and 7808 transitions. [2023-11-29 05:39:45,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:45,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7808 transitions. [2023-11-29 05:39:45,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2023-11-29 05:39:45,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:45,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:45,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 05:39:45,434 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:45,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:45,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1599435428, now seen corresponding path program 1 times [2023-11-29 05:39:45,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:45,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142966945] [2023-11-29 05:39:45,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:45,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:46,289 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 05:39:46,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:46,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142966945] [2023-11-29 05:39:46,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142966945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:46,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:46,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:46,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533414238] [2023-11-29 05:39:46,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:46,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:46,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:46,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:46,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:46,293 INFO L87 Difference]: Start difference. First operand 4700 states and 7808 transitions. Second operand has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:46,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:46,454 INFO L93 Difference]: Finished difference Result 12791 states and 21248 transitions. [2023-11-29 05:39:46,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:39:46,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 0 states have call successors, (0), 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 683 [2023-11-29 05:39:46,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:46,465 INFO L225 Difference]: With dead ends: 12791 [2023-11-29 05:39:46,465 INFO L226 Difference]: Without dead ends: 8715 [2023-11-29 05:39:46,469 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 05:39:46,469 INFO L413 NwaCegarLoop]: 8273 mSDtfsCounter, 6667 mSDsluCounter, 15335 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6667 SdHoareTripleChecker+Valid, 23608 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:46,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6667 Valid, 23608 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:46,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8715 states. [2023-11-29 05:39:46,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8715 to 4702. [2023-11-29 05:39:46,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4702 states, 4701 states have (on average 1.6613486492235694) internal successors, (7810), 4701 states have internal predecessors, (7810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:46,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4702 states to 4702 states and 7810 transitions. [2023-11-29 05:39:46,541 INFO L78 Accepts]: Start accepts. Automaton has 4702 states and 7810 transitions. Word has length 683 [2023-11-29 05:39:46,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:46,542 INFO L495 AbstractCegarLoop]: Abstraction has 4702 states and 7810 transitions. [2023-11-29 05:39:46,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:46,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4702 states and 7810 transitions. [2023-11-29 05:39:46,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2023-11-29 05:39:46,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:46,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:46,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 05:39:46,548 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:46,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:46,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1270410470, now seen corresponding path program 1 times [2023-11-29 05:39:46,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:46,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56245493] [2023-11-29 05:39:46,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:46,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:47,404 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 05:39:47,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:47,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56245493] [2023-11-29 05:39:47,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56245493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:47,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:47,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:47,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430043926] [2023-11-29 05:39:47,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:47,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:47,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:47,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:47,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:47,408 INFO L87 Difference]: Start difference. First operand 4702 states and 7810 transitions. Second operand has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:47,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:47,566 INFO L93 Difference]: Finished difference Result 12801 states and 21260 transitions. [2023-11-29 05:39:47,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:39:47,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 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 684 [2023-11-29 05:39:47,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:47,583 INFO L225 Difference]: With dead ends: 12801 [2023-11-29 05:39:47,583 INFO L226 Difference]: Without dead ends: 8723 [2023-11-29 05:39:47,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:39:47,587 INFO L413 NwaCegarLoop]: 8272 mSDtfsCounter, 6669 mSDsluCounter, 15336 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6669 SdHoareTripleChecker+Valid, 23608 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:47,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6669 Valid, 23608 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:47,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8723 states. [2023-11-29 05:39:47,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8723 to 4705. [2023-11-29 05:39:47,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4705 states, 4704 states have (on average 1.6613520408163265) internal successors, (7815), 4704 states have internal predecessors, (7815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:47,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4705 states to 4705 states and 7815 transitions. [2023-11-29 05:39:47,652 INFO L78 Accepts]: Start accepts. Automaton has 4705 states and 7815 transitions. Word has length 684 [2023-11-29 05:39:47,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:47,653 INFO L495 AbstractCegarLoop]: Abstraction has 4705 states and 7815 transitions. [2023-11-29 05:39:47,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:47,653 INFO L276 IsEmpty]: Start isEmpty. Operand 4705 states and 7815 transitions. [2023-11-29 05:39:47,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-29 05:39:47,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:47,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:47,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 05:39:47,658 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:47,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:47,659 INFO L85 PathProgramCache]: Analyzing trace with hash -896539138, now seen corresponding path program 1 times [2023-11-29 05:39:47,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:47,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656826048] [2023-11-29 05:39:47,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:47,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:48,469 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 05:39:48,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:48,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656826048] [2023-11-29 05:39:48,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656826048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:48,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:48,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:48,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95072398] [2023-11-29 05:39:48,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:48,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:48,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:48,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:48,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:48,473 INFO L87 Difference]: Start difference. First operand 4705 states and 7815 transitions. Second operand has 4 states, 4 states have (on average 171.25) internal successors, (685), 4 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:48,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:48,629 INFO L93 Difference]: Finished difference Result 12800 states and 21259 transitions. [2023-11-29 05:39:48,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:39:48,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 171.25) internal successors, (685), 4 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 685 [2023-11-29 05:39:48,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:48,639 INFO L225 Difference]: With dead ends: 12800 [2023-11-29 05:39:48,639 INFO L226 Difference]: Without dead ends: 8719 [2023-11-29 05:39:48,643 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 05:39:48,644 INFO L413 NwaCegarLoop]: 8263 mSDtfsCounter, 6664 mSDsluCounter, 15325 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6664 SdHoareTripleChecker+Valid, 23588 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:48,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6664 Valid, 23588 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:48,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8719 states. [2023-11-29 05:39:48,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8719 to 4707. [2023-11-29 05:39:48,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4707 states, 4706 states have (on average 1.6610709732256694) internal successors, (7817), 4706 states have internal predecessors, (7817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:48,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 7817 transitions. [2023-11-29 05:39:48,710 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 7817 transitions. Word has length 685 [2023-11-29 05:39:48,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:48,711 INFO L495 AbstractCegarLoop]: Abstraction has 4707 states and 7817 transitions. [2023-11-29 05:39:48,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.25) internal successors, (685), 4 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:48,711 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 7817 transitions. [2023-11-29 05:39:48,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2023-11-29 05:39:48,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:48,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:48,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 05:39:48,716 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:48,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:48,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1964545150, now seen corresponding path program 1 times [2023-11-29 05:39:48,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:48,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420508326] [2023-11-29 05:39:48,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:48,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:39:49,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:49,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420508326] [2023-11-29 05:39:49,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420508326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:49,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:49,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:39:49,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718951369] [2023-11-29 05:39:49,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:49,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:39:49,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:49,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:39:49,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:39:49,708 INFO L87 Difference]: Start difference. First operand 4707 states and 7817 transitions. Second operand has 5 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:49,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:49,943 INFO L93 Difference]: Finished difference Result 12810 states and 21271 transitions. [2023-11-29 05:39:49,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:39:49,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 0 states have call successors, (0), 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 686 [2023-11-29 05:39:49,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:49,954 INFO L225 Difference]: With dead ends: 12810 [2023-11-29 05:39:49,954 INFO L226 Difference]: Without dead ends: 8727 [2023-11-29 05:39:49,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:39:49,959 INFO L413 NwaCegarLoop]: 8261 mSDtfsCounter, 6667 mSDsluCounter, 23579 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6667 SdHoareTripleChecker+Valid, 31840 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:49,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6667 Valid, 31840 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:39:49,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8727 states. [2023-11-29 05:39:50,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8727 to 4710. [2023-11-29 05:39:50,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4710 states, 4709 states have (on average 1.6610745381184966) internal successors, (7822), 4709 states have internal predecessors, (7822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:50,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4710 states to 4710 states and 7822 transitions. [2023-11-29 05:39:50,025 INFO L78 Accepts]: Start accepts. Automaton has 4710 states and 7822 transitions. Word has length 686 [2023-11-29 05:39:50,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:50,026 INFO L495 AbstractCegarLoop]: Abstraction has 4710 states and 7822 transitions. [2023-11-29 05:39:50,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:50,026 INFO L276 IsEmpty]: Start isEmpty. Operand 4710 states and 7822 transitions. [2023-11-29 05:39:50,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2023-11-29 05:39:50,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:50,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:50,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 05:39:50,031 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:50,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:50,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1303261418, now seen corresponding path program 1 times [2023-11-29 05:39:50,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:50,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504229358] [2023-11-29 05:39:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:50,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:50,841 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 05:39:50,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:50,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504229358] [2023-11-29 05:39:50,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504229358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:50,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:50,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:50,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017212660] [2023-11-29 05:39:50,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:50,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:50,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:50,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:50,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:50,845 INFO L87 Difference]: Start difference. First operand 4710 states and 7822 transitions. Second operand has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:51,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:51,001 INFO L93 Difference]: Finished difference Result 12809 states and 21270 transitions. [2023-11-29 05:39:51,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:39:51,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 687 [2023-11-29 05:39:51,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:51,010 INFO L225 Difference]: With dead ends: 12809 [2023-11-29 05:39:51,010 INFO L226 Difference]: Without dead ends: 8723 [2023-11-29 05:39:51,014 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 05:39:51,014 INFO L413 NwaCegarLoop]: 8253 mSDtfsCounter, 6661 mSDsluCounter, 15315 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6661 SdHoareTripleChecker+Valid, 23568 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:51,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6661 Valid, 23568 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:51,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8723 states. [2023-11-29 05:39:51,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8723 to 4712. [2023-11-29 05:39:51,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4712 states, 4711 states have (on average 1.66079388664827) internal successors, (7824), 4711 states have internal predecessors, (7824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:51,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4712 states to 4712 states and 7824 transitions. [2023-11-29 05:39:51,079 INFO L78 Accepts]: Start accepts. Automaton has 4712 states and 7824 transitions. Word has length 687 [2023-11-29 05:39:51,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:51,080 INFO L495 AbstractCegarLoop]: Abstraction has 4712 states and 7824 transitions. [2023-11-29 05:39:51,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:51,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4712 states and 7824 transitions. [2023-11-29 05:39:51,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2023-11-29 05:39:51,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:51,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:51,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 05:39:51,085 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:51,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:51,086 INFO L85 PathProgramCache]: Analyzing trace with hash 978849828, now seen corresponding path program 1 times [2023-11-29 05:39:51,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:51,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510492790] [2023-11-29 05:39:51,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:51,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:52,006 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 05:39:52,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:52,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510492790] [2023-11-29 05:39:52,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510492790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:52,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:52,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:39:52,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797314606] [2023-11-29 05:39:52,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:52,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:39:52,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:52,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:39:52,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:39:52,009 INFO L87 Difference]: Start difference. First operand 4712 states and 7824 transitions. Second operand has 5 states, 5 states have (on average 137.6) internal successors, (688), 5 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:52,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:52,229 INFO L93 Difference]: Finished difference Result 12819 states and 21282 transitions. [2023-11-29 05:39:52,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:39:52,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 137.6) internal successors, (688), 5 states have internal predecessors, (688), 0 states have call successors, (0), 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 688 [2023-11-29 05:39:52,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:52,239 INFO L225 Difference]: With dead ends: 12819 [2023-11-29 05:39:52,239 INFO L226 Difference]: Without dead ends: 8731 [2023-11-29 05:39:52,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:39:52,243 INFO L413 NwaCegarLoop]: 8251 mSDtfsCounter, 6664 mSDsluCounter, 23559 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6664 SdHoareTripleChecker+Valid, 31810 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:52,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6664 Valid, 31810 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:39:52,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8731 states. [2023-11-29 05:39:52,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8731 to 4715. [2023-11-29 05:39:52,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4715 states, 4714 states have (on average 1.6607976240984301) internal successors, (7829), 4714 states have internal predecessors, (7829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:52,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4715 states to 4715 states and 7829 transitions. [2023-11-29 05:39:52,308 INFO L78 Accepts]: Start accepts. Automaton has 4715 states and 7829 transitions. Word has length 688 [2023-11-29 05:39:52,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:52,309 INFO L495 AbstractCegarLoop]: Abstraction has 4715 states and 7829 transitions. [2023-11-29 05:39:52,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.6) internal successors, (688), 5 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:52,310 INFO L276 IsEmpty]: Start isEmpty. Operand 4715 states and 7829 transitions. [2023-11-29 05:39:52,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2023-11-29 05:39:52,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:52,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:52,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 05:39:52,314 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:52,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:52,315 INFO L85 PathProgramCache]: Analyzing trace with hash -797163920, now seen corresponding path program 1 times [2023-11-29 05:39:52,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:52,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572772319] [2023-11-29 05:39:52,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:52,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:53,122 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 05:39:53,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:53,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572772319] [2023-11-29 05:39:53,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572772319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:53,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:53,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:53,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107825575] [2023-11-29 05:39:53,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:53,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:53,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:53,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:53,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:53,125 INFO L87 Difference]: Start difference. First operand 4715 states and 7829 transitions. Second operand has 4 states, 4 states have (on average 172.25) internal successors, (689), 4 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:53,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:53,357 INFO L93 Difference]: Finished difference Result 12818 states and 21281 transitions. [2023-11-29 05:39:53,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:39:53,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 172.25) internal successors, (689), 4 states have internal predecessors, (689), 0 states have call successors, (0), 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 689 [2023-11-29 05:39:53,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:53,363 INFO L225 Difference]: With dead ends: 12818 [2023-11-29 05:39:53,363 INFO L226 Difference]: Without dead ends: 8727 [2023-11-29 05:39:53,366 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 05:39:53,366 INFO L413 NwaCegarLoop]: 8243 mSDtfsCounter, 6658 mSDsluCounter, 15305 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6658 SdHoareTripleChecker+Valid, 23548 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:53,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6658 Valid, 23548 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:53,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8727 states. [2023-11-29 05:39:53,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8727 to 4717. [2023-11-29 05:39:53,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4717 states, 4716 states have (on average 1.6605173876166242) internal successors, (7831), 4716 states have internal predecessors, (7831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:53,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4717 states to 4717 states and 7831 transitions. [2023-11-29 05:39:53,427 INFO L78 Accepts]: Start accepts. Automaton has 4717 states and 7831 transitions. Word has length 689 [2023-11-29 05:39:53,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:53,427 INFO L495 AbstractCegarLoop]: Abstraction has 4717 states and 7831 transitions. [2023-11-29 05:39:53,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.25) internal successors, (689), 4 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:53,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4717 states and 7831 transitions. [2023-11-29 05:39:53,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2023-11-29 05:39:53,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:53,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:53,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 05:39:53,433 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:53,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:53,433 INFO L85 PathProgramCache]: Analyzing trace with hash -172963704, now seen corresponding path program 1 times [2023-11-29 05:39:53,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:53,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366617787] [2023-11-29 05:39:53,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:53,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:54,364 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 05:39:54,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:54,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366617787] [2023-11-29 05:39:54,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366617787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:54,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:54,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:39:54,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969758505] [2023-11-29 05:39:54,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:54,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:39:54,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:54,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:39:54,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:39:54,368 INFO L87 Difference]: Start difference. First operand 4717 states and 7831 transitions. Second operand has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:54,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:54,555 INFO L93 Difference]: Finished difference Result 12828 states and 21293 transitions. [2023-11-29 05:39:54,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:39:54,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 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 690 [2023-11-29 05:39:54,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:54,564 INFO L225 Difference]: With dead ends: 12828 [2023-11-29 05:39:54,564 INFO L226 Difference]: Without dead ends: 8735 [2023-11-29 05:39:54,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:39:54,568 INFO L413 NwaCegarLoop]: 8241 mSDtfsCounter, 6662 mSDsluCounter, 21962 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6662 SdHoareTripleChecker+Valid, 30203 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:54,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6662 Valid, 30203 Invalid, 31 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:54,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8735 states. [2023-11-29 05:39:54,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8735 to 4720. [2023-11-29 05:39:54,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 4719 states have (on average 1.6605212968849332) internal successors, (7836), 4719 states have internal predecessors, (7836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:54,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 7836 transitions. [2023-11-29 05:39:54,658 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 7836 transitions. Word has length 690 [2023-11-29 05:39:54,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:54,659 INFO L495 AbstractCegarLoop]: Abstraction has 4720 states and 7836 transitions. [2023-11-29 05:39:54,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:54,659 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 7836 transitions. [2023-11-29 05:39:54,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2023-11-29 05:39:54,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:54,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:54,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 05:39:54,668 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:54,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:54,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1817921912, now seen corresponding path program 1 times [2023-11-29 05:39:54,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:54,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458075337] [2023-11-29 05:39:54,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:54,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:55,508 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 05:39:55,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:55,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458075337] [2023-11-29 05:39:55,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458075337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:55,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:55,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:55,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553705239] [2023-11-29 05:39:55,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:55,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:55,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:55,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:55,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:55,511 INFO L87 Difference]: Start difference. First operand 4720 states and 7836 transitions. Second operand has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:55,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:55,661 INFO L93 Difference]: Finished difference Result 12827 states and 21292 transitions. [2023-11-29 05:39:55,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:39:55,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 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 691 [2023-11-29 05:39:55,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:55,669 INFO L225 Difference]: With dead ends: 12827 [2023-11-29 05:39:55,669 INFO L226 Difference]: Without dead ends: 8731 [2023-11-29 05:39:55,674 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 05:39:55,675 INFO L413 NwaCegarLoop]: 8233 mSDtfsCounter, 6655 mSDsluCounter, 15295 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6655 SdHoareTripleChecker+Valid, 23528 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:55,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6655 Valid, 23528 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:55,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8731 states. [2023-11-29 05:39:55,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8731 to 4722. [2023-11-29 05:39:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4722 states, 4721 states have (on average 1.660241474263927) internal successors, (7838), 4721 states have internal predecessors, (7838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:55,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4722 states to 4722 states and 7838 transitions. [2023-11-29 05:39:55,768 INFO L78 Accepts]: Start accepts. Automaton has 4722 states and 7838 transitions. Word has length 691 [2023-11-29 05:39:55,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:55,769 INFO L495 AbstractCegarLoop]: Abstraction has 4722 states and 7838 transitions. [2023-11-29 05:39:55,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:55,769 INFO L276 IsEmpty]: Start isEmpty. Operand 4722 states and 7838 transitions. [2023-11-29 05:39:55,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2023-11-29 05:39:55,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:55,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:55,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 05:39:55,777 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:55,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:55,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1874794450, now seen corresponding path program 1 times [2023-11-29 05:39:55,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:55,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989417359] [2023-11-29 05:39:55,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:55,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:56,719 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 05:39:56,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:56,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989417359] [2023-11-29 05:39:56,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989417359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:56,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:56,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:39:56,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501070371] [2023-11-29 05:39:56,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:56,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:39:56,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:56,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:39:56,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:39:56,722 INFO L87 Difference]: Start difference. First operand 4722 states and 7838 transitions. Second operand has 5 states, 5 states have (on average 138.4) internal successors, (692), 5 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:56,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:56,930 INFO L93 Difference]: Finished difference Result 12837 states and 21304 transitions. [2023-11-29 05:39:56,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:39:56,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 138.4) internal successors, (692), 5 states have internal predecessors, (692), 0 states have call successors, (0), 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 692 [2023-11-29 05:39:56,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:56,938 INFO L225 Difference]: With dead ends: 12837 [2023-11-29 05:39:56,939 INFO L226 Difference]: Without dead ends: 8739 [2023-11-29 05:39:56,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:39:56,943 INFO L413 NwaCegarLoop]: 8231 mSDtfsCounter, 6658 mSDsluCounter, 23519 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6658 SdHoareTripleChecker+Valid, 31750 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:56,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6658 Valid, 31750 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:39:56,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8739 states. [2023-11-29 05:39:56,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8739 to 4725. [2023-11-29 05:39:57,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4725 states, 4724 states have (on average 1.6602455546147332) internal successors, (7843), 4724 states have internal predecessors, (7843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:57,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 7843 transitions. [2023-11-29 05:39:57,009 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 7843 transitions. Word has length 692 [2023-11-29 05:39:57,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:57,010 INFO L495 AbstractCegarLoop]: Abstraction has 4725 states and 7843 transitions. [2023-11-29 05:39:57,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.4) internal successors, (692), 5 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:57,010 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 7843 transitions. [2023-11-29 05:39:57,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2023-11-29 05:39:57,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:57,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:57,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 05:39:57,016 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:57,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:57,016 INFO L85 PathProgramCache]: Analyzing trace with hash 626237922, now seen corresponding path program 1 times [2023-11-29 05:39:57,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:57,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239631235] [2023-11-29 05:39:57,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:57,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:57,884 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 05:39:57,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:57,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239631235] [2023-11-29 05:39:57,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239631235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:57,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:57,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:39:57,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258920917] [2023-11-29 05:39:57,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:57,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:57,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:57,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:57,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:57,887 INFO L87 Difference]: Start difference. First operand 4725 states and 7843 transitions. Second operand has 4 states, 4 states have (on average 173.25) internal successors, (693), 4 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:58,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:58,041 INFO L93 Difference]: Finished difference Result 12836 states and 21303 transitions. [2023-11-29 05:39:58,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:39:58,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 173.25) internal successors, (693), 4 states have internal predecessors, (693), 0 states have call successors, (0), 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 693 [2023-11-29 05:39:58,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:58,052 INFO L225 Difference]: With dead ends: 12836 [2023-11-29 05:39:58,052 INFO L226 Difference]: Without dead ends: 8735 [2023-11-29 05:39:58,055 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 05:39:58,056 INFO L413 NwaCegarLoop]: 8223 mSDtfsCounter, 6652 mSDsluCounter, 15285 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6652 SdHoareTripleChecker+Valid, 23508 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:58,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6652 Valid, 23508 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:58,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8735 states. [2023-11-29 05:39:58,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8735 to 4727. [2023-11-29 05:39:58,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4727 states, 4726 states have (on average 1.659966144731274) internal successors, (7845), 4726 states have internal predecessors, (7845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:58,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4727 states to 4727 states and 7845 transitions. [2023-11-29 05:39:58,121 INFO L78 Accepts]: Start accepts. Automaton has 4727 states and 7845 transitions. Word has length 693 [2023-11-29 05:39:58,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:58,121 INFO L495 AbstractCegarLoop]: Abstraction has 4727 states and 7845 transitions. [2023-11-29 05:39:58,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.25) internal successors, (693), 4 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:58,122 INFO L276 IsEmpty]: Start isEmpty. Operand 4727 states and 7845 transitions. [2023-11-29 05:39:58,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2023-11-29 05:39:58,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:58,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:58,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 05:39:58,127 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:58,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:58,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1155016814, now seen corresponding path program 1 times [2023-11-29 05:39:58,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:58,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333372604] [2023-11-29 05:39:58,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:58,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:59,071 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 05:39:59,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:59,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333372604] [2023-11-29 05:39:59,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333372604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:59,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:59,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:39:59,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052435449] [2023-11-29 05:39:59,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:59,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:39:59,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:59,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:39:59,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:39:59,075 INFO L87 Difference]: Start difference. First operand 4727 states and 7845 transitions. Second operand has 5 states, 5 states have (on average 138.8) internal successors, (694), 5 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:59,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:59,273 INFO L93 Difference]: Finished difference Result 12846 states and 21315 transitions. [2023-11-29 05:39:59,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:39:59,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 138.8) internal successors, (694), 5 states have internal predecessors, (694), 0 states have call successors, (0), 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 694 [2023-11-29 05:39:59,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:59,284 INFO L225 Difference]: With dead ends: 12846 [2023-11-29 05:39:59,284 INFO L226 Difference]: Without dead ends: 8743 [2023-11-29 05:39:59,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:39:59,289 INFO L413 NwaCegarLoop]: 8221 mSDtfsCounter, 6656 mSDsluCounter, 21936 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6656 SdHoareTripleChecker+Valid, 30157 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:59,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6656 Valid, 30157 Invalid, 31 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:39:59,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8743 states. [2023-11-29 05:39:59,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8743 to 4730. [2023-11-29 05:39:59,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4730 states, 4729 states have (on average 1.659970395432438) internal successors, (7850), 4729 states have internal predecessors, (7850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:59,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4730 states to 4730 states and 7850 transitions. [2023-11-29 05:39:59,358 INFO L78 Accepts]: Start accepts. Automaton has 4730 states and 7850 transitions. Word has length 694 [2023-11-29 05:39:59,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:59,359 INFO L495 AbstractCegarLoop]: Abstraction has 4730 states and 7850 transitions. [2023-11-29 05:39:59,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.8) internal successors, (694), 5 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:59,359 INFO L276 IsEmpty]: Start isEmpty. Operand 4730 states and 7850 transitions. [2023-11-29 05:39:59,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-11-29 05:39:59,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:59,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:59,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 05:39:59,364 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:59,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:59,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1318234362, now seen corresponding path program 1 times [2023-11-29 05:39:59,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:59,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796134610] [2023-11-29 05:39:59,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:59,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:00,240 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 05:40:00,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:00,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796134610] [2023-11-29 05:40:00,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796134610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:00,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:40:00,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:40:00,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075240698] [2023-11-29 05:40:00,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:00,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:00,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:00,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:00,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:40:00,244 INFO L87 Difference]: Start difference. First operand 4730 states and 7850 transitions. Second operand has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:00,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:00,404 INFO L93 Difference]: Finished difference Result 12849 states and 21320 transitions. [2023-11-29 05:40:00,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:00,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 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 695 [2023-11-29 05:40:00,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:00,413 INFO L225 Difference]: With dead ends: 12849 [2023-11-29 05:40:00,413 INFO L226 Difference]: Without dead ends: 8743 [2023-11-29 05:40:00,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:40:00,417 INFO L413 NwaCegarLoop]: 8212 mSDtfsCounter, 6652 mSDsluCounter, 15276 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6652 SdHoareTripleChecker+Valid, 23488 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:00,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6652 Valid, 23488 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:00,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8743 states. [2023-11-29 05:40:00,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8743 to 4735. [2023-11-29 05:40:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4735 states, 4734 states have (on average 1.6596958174904943) internal successors, (7857), 4734 states have internal predecessors, (7857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:00,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4735 states to 4735 states and 7857 transitions. [2023-11-29 05:40:00,483 INFO L78 Accepts]: Start accepts. Automaton has 4735 states and 7857 transitions. Word has length 695 [2023-11-29 05:40:00,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:00,483 INFO L495 AbstractCegarLoop]: Abstraction has 4735 states and 7857 transitions. [2023-11-29 05:40:00,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:00,484 INFO L276 IsEmpty]: Start isEmpty. Operand 4735 states and 7857 transitions. [2023-11-29 05:40:00,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2023-11-29 05:40:00,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:00,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:00,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 05:40:00,489 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:00,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:00,489 INFO L85 PathProgramCache]: Analyzing trace with hash -952426402, now seen corresponding path program 1 times [2023-11-29 05:40:00,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:00,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887182229] [2023-11-29 05:40:00,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:00,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:01,422 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 05:40:01,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:01,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887182229] [2023-11-29 05:40:01,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887182229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:01,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:40:01,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:40:01,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097869345] [2023-11-29 05:40:01,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:01,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:01,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:01,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:01,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:40:01,425 INFO L87 Difference]: Start difference. First operand 4735 states and 7857 transitions. Second operand has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:01,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:01,585 INFO L93 Difference]: Finished difference Result 12858 states and 21331 transitions. [2023-11-29 05:40:01,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:01,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 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 696 [2023-11-29 05:40:01,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:01,595 INFO L225 Difference]: With dead ends: 12858 [2023-11-29 05:40:01,595 INFO L226 Difference]: Without dead ends: 8747 [2023-11-29 05:40:01,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:40:01,599 INFO L413 NwaCegarLoop]: 8207 mSDtfsCounter, 6651 mSDsluCounter, 15271 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6651 SdHoareTripleChecker+Valid, 23478 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:01,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6651 Valid, 23478 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:01,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8747 states. [2023-11-29 05:40:01,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8747 to 4737. [2023-11-29 05:40:01,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4737 states, 4736 states have (on average 1.6594172297297298) internal successors, (7859), 4736 states have internal predecessors, (7859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:01,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4737 states to 4737 states and 7859 transitions. [2023-11-29 05:40:01,665 INFO L78 Accepts]: Start accepts. Automaton has 4737 states and 7859 transitions. Word has length 696 [2023-11-29 05:40:01,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:01,665 INFO L495 AbstractCegarLoop]: Abstraction has 4737 states and 7859 transitions. [2023-11-29 05:40:01,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:01,666 INFO L276 IsEmpty]: Start isEmpty. Operand 4737 states and 7859 transitions. [2023-11-29 05:40:01,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2023-11-29 05:40:01,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:01,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:01,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 05:40:01,671 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:01,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:01,671 INFO L85 PathProgramCache]: Analyzing trace with hash -993647082, now seen corresponding path program 1 times [2023-11-29 05:40:01,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:01,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523983755] [2023-11-29 05:40:01,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:01,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:02,562 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 05:40:02,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:02,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523983755] [2023-11-29 05:40:02,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523983755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:02,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:40:02,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:40:02,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217009062] [2023-11-29 05:40:02,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:02,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:02,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:02,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:02,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:40:02,566 INFO L87 Difference]: Start difference. First operand 4737 states and 7859 transitions. Second operand has 4 states, 4 states have (on average 174.25) internal successors, (697), 4 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:02,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:02,716 INFO L93 Difference]: Finished difference Result 12861 states and 21332 transitions. [2023-11-29 05:40:02,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:02,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 174.25) internal successors, (697), 4 states have internal predecessors, (697), 0 states have call successors, (0), 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 697 [2023-11-29 05:40:02,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:02,724 INFO L225 Difference]: With dead ends: 12861 [2023-11-29 05:40:02,724 INFO L226 Difference]: Without dead ends: 8748 [2023-11-29 05:40:02,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:40:02,728 INFO L413 NwaCegarLoop]: 8197 mSDtfsCounter, 6646 mSDsluCounter, 15261 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6646 SdHoareTripleChecker+Valid, 23458 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:02,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6646 Valid, 23458 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:02,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8748 states. [2023-11-29 05:40:02,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8748 to 4742. [2023-11-29 05:40:02,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4742 states, 4741 states have (on average 1.6591436405821556) internal successors, (7866), 4741 states have internal predecessors, (7866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4742 states to 4742 states and 7866 transitions. [2023-11-29 05:40:02,793 INFO L78 Accepts]: Start accepts. Automaton has 4742 states and 7866 transitions. Word has length 697 [2023-11-29 05:40:02,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:02,794 INFO L495 AbstractCegarLoop]: Abstraction has 4742 states and 7866 transitions. [2023-11-29 05:40:02,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.25) internal successors, (697), 4 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:02,794 INFO L276 IsEmpty]: Start isEmpty. Operand 4742 states and 7866 transitions. [2023-11-29 05:40:02,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-11-29 05:40:02,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:02,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:02,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 05:40:02,800 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:02,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:02,800 INFO L85 PathProgramCache]: Analyzing trace with hash 997779052, now seen corresponding path program 1 times [2023-11-29 05:40:02,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:02,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006670089] [2023-11-29 05:40:02,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:02,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:03,694 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 05:40:03,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:03,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006670089] [2023-11-29 05:40:03,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006670089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:03,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:40:03,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:40:03,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214425696] [2023-11-29 05:40:03,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:03,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:03,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:03,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:03,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:40:03,697 INFO L87 Difference]: Start difference. First operand 4742 states and 7866 transitions. Second operand has 4 states, 4 states have (on average 174.5) internal successors, (698), 4 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:03,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:03,852 INFO L93 Difference]: Finished difference Result 12870 states and 21343 transitions. [2023-11-29 05:40:03,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:03,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 174.5) internal successors, (698), 4 states have internal predecessors, (698), 0 states have call successors, (0), 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 698 [2023-11-29 05:40:03,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:03,861 INFO L225 Difference]: With dead ends: 12870 [2023-11-29 05:40:03,861 INFO L226 Difference]: Without dead ends: 8752 [2023-11-29 05:40:03,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:40:03,865 INFO L413 NwaCegarLoop]: 8187 mSDtfsCounter, 6643 mSDsluCounter, 15251 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6643 SdHoareTripleChecker+Valid, 23438 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:03,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6643 Valid, 23438 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:03,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8752 states. [2023-11-29 05:40:03,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8752 to 4747. [2023-11-29 05:40:03,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4747 states, 4746 states have (on average 1.6588706278971765) internal successors, (7873), 4746 states have internal predecessors, (7873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:03,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4747 states to 4747 states and 7873 transitions. [2023-11-29 05:40:03,930 INFO L78 Accepts]: Start accepts. Automaton has 4747 states and 7873 transitions. Word has length 698 [2023-11-29 05:40:03,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:03,931 INFO L495 AbstractCegarLoop]: Abstraction has 4747 states and 7873 transitions. [2023-11-29 05:40:03,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.5) internal successors, (698), 4 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:03,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4747 states and 7873 transitions. [2023-11-29 05:40:03,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2023-11-29 05:40:03,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:03,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:03,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-29 05:40:03,936 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:03,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:03,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1809967732, now seen corresponding path program 1 times [2023-11-29 05:40:03,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:03,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745002961] [2023-11-29 05:40:03,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:03,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:04,905 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 05:40:04,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:04,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745002961] [2023-11-29 05:40:04,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745002961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:04,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:40:04,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:40:04,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895532467] [2023-11-29 05:40:04,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:04,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:04,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:04,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:04,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:40:04,909 INFO L87 Difference]: Start difference. First operand 4747 states and 7873 transitions. Second operand has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:05,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:05,062 INFO L93 Difference]: Finished difference Result 12879 states and 21354 transitions. [2023-11-29 05:40:05,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:05,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 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 699 [2023-11-29 05:40:05,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:05,072 INFO L225 Difference]: With dead ends: 12879 [2023-11-29 05:40:05,072 INFO L226 Difference]: Without dead ends: 8756 [2023-11-29 05:40:05,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:40:05,076 INFO L413 NwaCegarLoop]: 8177 mSDtfsCounter, 6640 mSDsluCounter, 15241 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6640 SdHoareTripleChecker+Valid, 23418 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:05,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6640 Valid, 23418 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:05,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8756 states. [2023-11-29 05:40:05,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8756 to 4752. [2023-11-29 05:40:05,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4752 states, 4751 states have (on average 1.6585981898547675) internal successors, (7880), 4751 states have internal predecessors, (7880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:05,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 7880 transitions. [2023-11-29 05:40:05,141 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 7880 transitions. Word has length 699 [2023-11-29 05:40:05,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:05,141 INFO L495 AbstractCegarLoop]: Abstraction has 4752 states and 7880 transitions. [2023-11-29 05:40:05,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:05,142 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 7880 transitions. [2023-11-29 05:40:05,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2023-11-29 05:40:05,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:05,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:05,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-29 05:40:05,147 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:05,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:05,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1840701434, now seen corresponding path program 1 times [2023-11-29 05:40:05,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:05,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098366322] [2023-11-29 05:40:05,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:05,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:06,055 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 05:40:06,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:06,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098366322] [2023-11-29 05:40:06,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098366322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:06,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:40:06,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:40:06,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657192672] [2023-11-29 05:40:06,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:06,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:06,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:06,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:06,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:40:06,059 INFO L87 Difference]: Start difference. First operand 4752 states and 7880 transitions. Second operand has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:06,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:06,220 INFO L93 Difference]: Finished difference Result 12888 states and 21365 transitions. [2023-11-29 05:40:06,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:06,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 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 700 [2023-11-29 05:40:06,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:06,229 INFO L225 Difference]: With dead ends: 12888 [2023-11-29 05:40:06,229 INFO L226 Difference]: Without dead ends: 8760 [2023-11-29 05:40:06,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:40:06,233 INFO L413 NwaCegarLoop]: 8167 mSDtfsCounter, 6637 mSDsluCounter, 15231 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6637 SdHoareTripleChecker+Valid, 23398 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:06,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6637 Valid, 23398 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:06,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8760 states. [2023-11-29 05:40:06,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8760 to 4757. [2023-11-29 05:40:06,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4757 states, 4756 states have (on average 1.6583263246425568) internal successors, (7887), 4756 states have internal predecessors, (7887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:06,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4757 states to 4757 states and 7887 transitions. [2023-11-29 05:40:06,300 INFO L78 Accepts]: Start accepts. Automaton has 4757 states and 7887 transitions. Word has length 700 [2023-11-29 05:40:06,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:06,301 INFO L495 AbstractCegarLoop]: Abstraction has 4757 states and 7887 transitions. [2023-11-29 05:40:06,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:06,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4757 states and 7887 transitions. [2023-11-29 05:40:06,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2023-11-29 05:40:06,305 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:06,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:06,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-29 05:40:06,306 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:06,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:06,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1463901314, now seen corresponding path program 1 times [2023-11-29 05:40:06,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:06,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052915640] [2023-11-29 05:40:06,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:06,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:07,210 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 05:40:07,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:07,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052915640] [2023-11-29 05:40:07,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052915640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:07,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:40:07,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:40:07,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465404985] [2023-11-29 05:40:07,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:07,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:07,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:07,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:07,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:40:07,212 INFO L87 Difference]: Start difference. First operand 4757 states and 7887 transitions. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:07,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:07,371 INFO L93 Difference]: Finished difference Result 12897 states and 21376 transitions. [2023-11-29 05:40:07,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:07,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 701 [2023-11-29 05:40:07,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:07,380 INFO L225 Difference]: With dead ends: 12897 [2023-11-29 05:40:07,381 INFO L226 Difference]: Without dead ends: 8764 [2023-11-29 05:40:07,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:40:07,385 INFO L413 NwaCegarLoop]: 8157 mSDtfsCounter, 6634 mSDsluCounter, 15221 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6634 SdHoareTripleChecker+Valid, 23378 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:07,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6634 Valid, 23378 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:07,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8764 states. [2023-11-29 05:40:07,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8764 to 4762. [2023-11-29 05:40:07,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4762 states, 4761 states have (on average 1.6580550304557866) internal successors, (7894), 4761 states have internal predecessors, (7894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:07,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4762 states to 4762 states and 7894 transitions. [2023-11-29 05:40:07,450 INFO L78 Accepts]: Start accepts. Automaton has 4762 states and 7894 transitions. Word has length 701 [2023-11-29 05:40:07,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:07,451 INFO L495 AbstractCegarLoop]: Abstraction has 4762 states and 7894 transitions. [2023-11-29 05:40:07,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:07,451 INFO L276 IsEmpty]: Start isEmpty. Operand 4762 states and 7894 transitions. [2023-11-29 05:40:07,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2023-11-29 05:40:07,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:07,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:07,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-29 05:40:07,456 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:07,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:07,457 INFO L85 PathProgramCache]: Analyzing trace with hash -131896056, now seen corresponding path program 1 times [2023-11-29 05:40:07,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:07,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373015515] [2023-11-29 05:40:07,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:07,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:08,409 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 05:40:08,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:08,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373015515] [2023-11-29 05:40:08,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373015515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:08,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:40:08,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:40:08,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119938915] [2023-11-29 05:40:08,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:08,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:08,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:08,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:08,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:40:08,412 INFO L87 Difference]: Start difference. First operand 4762 states and 7894 transitions. Second operand has 4 states, 4 states have (on average 175.5) internal successors, (702), 4 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:08,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:08,561 INFO L93 Difference]: Finished difference Result 12902 states and 21381 transitions. [2023-11-29 05:40:08,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:40:08,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 175.5) internal successors, (702), 4 states have internal predecessors, (702), 0 states have call successors, (0), 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 702 [2023-11-29 05:40:08,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:08,570 INFO L225 Difference]: With dead ends: 12902 [2023-11-29 05:40:08,570 INFO L226 Difference]: Without dead ends: 8764 [2023-11-29 05:40:08,574 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 05:40:08,574 INFO L413 NwaCegarLoop]: 8148 mSDtfsCounter, 6628 mSDsluCounter, 15210 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6628 SdHoareTripleChecker+Valid, 23358 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:08,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6628 Valid, 23358 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:08,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8764 states. [2023-11-29 05:40:08,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8764 to 4764. [2023-11-29 05:40:08,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4764 states, 4763 states have (on average 1.6577787108964939) internal successors, (7896), 4763 states have internal predecessors, (7896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:08,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4764 states to 4764 states and 7896 transitions. [2023-11-29 05:40:08,640 INFO L78 Accepts]: Start accepts. Automaton has 4764 states and 7896 transitions. Word has length 702 [2023-11-29 05:40:08,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:08,641 INFO L495 AbstractCegarLoop]: Abstraction has 4764 states and 7896 transitions. [2023-11-29 05:40:08,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.5) internal successors, (702), 4 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:08,641 INFO L276 IsEmpty]: Start isEmpty. Operand 4764 states and 7896 transitions. [2023-11-29 05:40:08,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2023-11-29 05:40:08,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:08,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:08,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-29 05:40:08,646 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:08,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:08,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1379581092, now seen corresponding path program 1 times [2023-11-29 05:40:08,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:08,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963978122] [2023-11-29 05:40:08,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:08,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:09,624 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 05:40:09,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:09,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963978122] [2023-11-29 05:40:09,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963978122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:09,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:40:09,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:40:09,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340309272] [2023-11-29 05:40:09,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:09,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:40:09,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:09,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:40:09,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:40:09,627 INFO L87 Difference]: Start difference. First operand 4764 states and 7896 transitions. Second operand has 5 states, 5 states have (on average 140.6) internal successors, (703), 5 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:09,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:09,839 INFO L93 Difference]: Finished difference Result 12912 states and 21393 transitions. [2023-11-29 05:40:09,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:40:09,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 140.6) internal successors, (703), 5 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 703 [2023-11-29 05:40:09,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:09,847 INFO L225 Difference]: With dead ends: 12912 [2023-11-29 05:40:09,847 INFO L226 Difference]: Without dead ends: 8772 [2023-11-29 05:40:09,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:40:09,851 INFO L413 NwaCegarLoop]: 8146 mSDtfsCounter, 6631 mSDsluCounter, 23349 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6631 SdHoareTripleChecker+Valid, 31495 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:09,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6631 Valid, 31495 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:40:09,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8772 states. [2023-11-29 05:40:09,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8772 to 4767. [2023-11-29 05:40:09,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4767 states, 4766 states have (on average 1.6577843054972723) internal successors, (7901), 4766 states have internal predecessors, (7901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4767 states to 4767 states and 7901 transitions. [2023-11-29 05:40:09,917 INFO L78 Accepts]: Start accepts. Automaton has 4767 states and 7901 transitions. Word has length 703 [2023-11-29 05:40:09,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:09,918 INFO L495 AbstractCegarLoop]: Abstraction has 4767 states and 7901 transitions. [2023-11-29 05:40:09,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.6) internal successors, (703), 5 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:09,918 INFO L276 IsEmpty]: Start isEmpty. Operand 4767 states and 7901 transitions. [2023-11-29 05:40:09,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2023-11-29 05:40:09,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:09,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:09,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-29 05:40:09,923 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:09,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:09,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1208914796, now seen corresponding path program 1 times [2023-11-29 05:40:09,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:09,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577652968] [2023-11-29 05:40:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:09,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:10,828 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 05:40:10,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:10,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577652968] [2023-11-29 05:40:10,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577652968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:10,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:40:10,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:40:10,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747370512] [2023-11-29 05:40:10,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:10,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:10,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:10,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:10,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:40:10,831 INFO L87 Difference]: Start difference. First operand 4767 states and 7901 transitions. Second operand has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:10,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:10,986 INFO L93 Difference]: Finished difference Result 12915 states and 21398 transitions. [2023-11-29 05:40:10,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:10,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 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 704 [2023-11-29 05:40:10,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:10,995 INFO L225 Difference]: With dead ends: 12915 [2023-11-29 05:40:10,995 INFO L226 Difference]: Without dead ends: 8772 [2023-11-29 05:40:10,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:40:10,999 INFO L413 NwaCegarLoop]: 8137 mSDtfsCounter, 6628 mSDsluCounter, 15201 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6628 SdHoareTripleChecker+Valid, 23338 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:11,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6628 Valid, 23338 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:11,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8772 states. [2023-11-29 05:40:11,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8772 to 4772. [2023-11-29 05:40:11,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4772 states, 4771 states have (on average 1.6575141479773632) internal successors, (7908), 4771 states have internal predecessors, (7908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:11,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4772 states to 4772 states and 7908 transitions. [2023-11-29 05:40:11,066 INFO L78 Accepts]: Start accepts. Automaton has 4772 states and 7908 transitions. Word has length 704 [2023-11-29 05:40:11,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:11,067 INFO L495 AbstractCegarLoop]: Abstraction has 4772 states and 7908 transitions. [2023-11-29 05:40:11,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:11,067 INFO L276 IsEmpty]: Start isEmpty. Operand 4772 states and 7908 transitions. [2023-11-29 05:40:11,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-11-29 05:40:11,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:11,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:11,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-29 05:40:11,072 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:11,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:11,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1590940814, now seen corresponding path program 1 times [2023-11-29 05:40:11,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:11,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249548072] [2023-11-29 05:40:11,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:11,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:12,052 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 05:40:12,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:12,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249548072] [2023-11-29 05:40:12,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249548072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:12,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:40:12,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:40:12,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282719445] [2023-11-29 05:40:12,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:12,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:12,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:12,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:12,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:40:12,055 INFO L87 Difference]: Start difference. First operand 4772 states and 7908 transitions. Second operand has 4 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:12,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:12,206 INFO L93 Difference]: Finished difference Result 12924 states and 21409 transitions. [2023-11-29 05:40:12,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:12,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 705 [2023-11-29 05:40:12,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:12,215 INFO L225 Difference]: With dead ends: 12924 [2023-11-29 05:40:12,215 INFO L226 Difference]: Without dead ends: 8776 [2023-11-29 05:40:12,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:40:12,219 INFO L413 NwaCegarLoop]: 8127 mSDtfsCounter, 6625 mSDsluCounter, 15191 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6625 SdHoareTripleChecker+Valid, 23318 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:12,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6625 Valid, 23318 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:12,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8776 states. [2023-11-29 05:40:12,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8776 to 4777. [2023-11-29 05:40:12,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4777 states, 4776 states have (on average 1.6572445561139029) internal successors, (7915), 4776 states have internal predecessors, (7915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4777 states to 4777 states and 7915 transitions. [2023-11-29 05:40:12,286 INFO L78 Accepts]: Start accepts. Automaton has 4777 states and 7915 transitions. Word has length 705 [2023-11-29 05:40:12,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:12,286 INFO L495 AbstractCegarLoop]: Abstraction has 4777 states and 7915 transitions. [2023-11-29 05:40:12,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:12,287 INFO L276 IsEmpty]: Start isEmpty. Operand 4777 states and 7915 transitions. [2023-11-29 05:40:12,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2023-11-29 05:40:12,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:12,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:12,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-11-29 05:40:12,292 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:12,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:12,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1828209610, now seen corresponding path program 1 times [2023-11-29 05:40:12,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:12,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018537429] [2023-11-29 05:40:12,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:12,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:13,207 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 05:40:13,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:13,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018537429] [2023-11-29 05:40:13,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018537429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:13,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:40:13,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:40:13,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084216707] [2023-11-29 05:40:13,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:13,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:13,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:13,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:13,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:40:13,210 INFO L87 Difference]: Start difference. First operand 4777 states and 7915 transitions. Second operand has 4 states, 4 states have (on average 176.5) 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 05:40:13,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:13,372 INFO L93 Difference]: Finished difference Result 12933 states and 21420 transitions. [2023-11-29 05:40:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:13,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 176.5) 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 05:40:13,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:13,382 INFO L225 Difference]: With dead ends: 12933 [2023-11-29 05:40:13,382 INFO L226 Difference]: Without dead ends: 8780 [2023-11-29 05:40:13,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:40:13,386 INFO L413 NwaCegarLoop]: 8117 mSDtfsCounter, 6622 mSDsluCounter, 15181 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6622 SdHoareTripleChecker+Valid, 23298 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:13,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6622 Valid, 23298 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:13,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8780 states. [2023-11-29 05:40:13,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8780 to 4782. [2023-11-29 05:40:13,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4782 states, 4781 states have (on average 1.6569755281321898) internal successors, (7922), 4781 states have internal predecessors, (7922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:13,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 7922 transitions. [2023-11-29 05:40:13,454 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 7922 transitions. Word has length 706 [2023-11-29 05:40:13,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:13,454 INFO L495 AbstractCegarLoop]: Abstraction has 4782 states and 7922 transitions. [2023-11-29 05:40:13,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.5) 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 05:40:13,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 7922 transitions. [2023-11-29 05:40:13,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2023-11-29 05:40:13,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:13,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:13,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-11-29 05:40:13,460 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:13,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:13,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1799781824, now seen corresponding path program 1 times [2023-11-29 05:40:13,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:13,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160157742] [2023-11-29 05:40:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:13,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:14,510 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 05:40:14,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:14,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160157742] [2023-11-29 05:40:14,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160157742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:14,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:40:14,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:40:14,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485566405] [2023-11-29 05:40:14,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:14,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:14,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:14,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:14,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:40:14,513 INFO L87 Difference]: Start difference. First operand 4782 states and 7922 transitions. Second operand has 4 states, 4 states have (on average 176.75) 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 05:40:14,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:14,671 INFO L93 Difference]: Finished difference Result 12942 states and 21431 transitions. [2023-11-29 05:40:14,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:14,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 176.75) 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 05:40:14,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:14,680 INFO L225 Difference]: With dead ends: 12942 [2023-11-29 05:40:14,680 INFO L226 Difference]: Without dead ends: 8784 [2023-11-29 05:40:14,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:40:14,684 INFO L413 NwaCegarLoop]: 8107 mSDtfsCounter, 6619 mSDsluCounter, 15171 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6619 SdHoareTripleChecker+Valid, 23278 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:14,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6619 Valid, 23278 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:14,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8784 states. [2023-11-29 05:40:14,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8784 to 4787. [2023-11-29 05:40:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4787 states, 4786 states have (on average 1.6567070622649394) internal successors, (7929), 4786 states have internal predecessors, (7929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:14,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4787 states to 4787 states and 7929 transitions. [2023-11-29 05:40:14,750 INFO L78 Accepts]: Start accepts. Automaton has 4787 states and 7929 transitions. Word has length 707 [2023-11-29 05:40:14,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:14,751 INFO L495 AbstractCegarLoop]: Abstraction has 4787 states and 7929 transitions. [2023-11-29 05:40:14,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.75) 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 05:40:14,751 INFO L276 IsEmpty]: Start isEmpty. Operand 4787 states and 7929 transitions. [2023-11-29 05:40:14,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2023-11-29 05:40:14,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:14,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:14,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-29 05:40:14,757 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:14,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:14,757 INFO L85 PathProgramCache]: Analyzing trace with hash 543481216, now seen corresponding path program 1 times [2023-11-29 05:40:14,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:14,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679315175] [2023-11-29 05:40:14,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:14,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:15,637 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 05:40:15,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:15,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679315175] [2023-11-29 05:40:15,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679315175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:15,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:40:15,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:40:15,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320866032] [2023-11-29 05:40:15,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:15,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:15,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:15,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:15,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:40:15,641 INFO L87 Difference]: Start difference. First operand 4787 states and 7929 transitions. Second operand has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 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 05:40:15,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:15,794 INFO L93 Difference]: Finished difference Result 12947 states and 21436 transitions. [2023-11-29 05:40:15,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:40:15,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 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 05:40:15,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:15,803 INFO L225 Difference]: With dead ends: 12947 [2023-11-29 05:40:15,803 INFO L226 Difference]: Without dead ends: 8784 [2023-11-29 05:40:15,807 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 05:40:15,807 INFO L413 NwaCegarLoop]: 8098 mSDtfsCounter, 6613 mSDsluCounter, 15160 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6613 SdHoareTripleChecker+Valid, 23258 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:15,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6613 Valid, 23258 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:15,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8784 states. [2023-11-29 05:40:15,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8784 to 4789. [2023-11-29 05:40:15,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4789 states, 4788 states have (on average 1.6564327485380117) internal successors, (7931), 4788 states have internal predecessors, (7931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:15,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4789 states to 4789 states and 7931 transitions. [2023-11-29 05:40:15,944 INFO L78 Accepts]: Start accepts. Automaton has 4789 states and 7931 transitions. Word has length 708 [2023-11-29 05:40:15,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:15,945 INFO L495 AbstractCegarLoop]: Abstraction has 4789 states and 7931 transitions. [2023-11-29 05:40:15,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 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 05:40:15,945 INFO L276 IsEmpty]: Start isEmpty. Operand 4789 states and 7931 transitions. [2023-11-29 05:40:15,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2023-11-29 05:40:15,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:15,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:15,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-29 05:40:15,951 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:15,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:15,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1160372568, now seen corresponding path program 1 times [2023-11-29 05:40:15,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:15,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022889787] [2023-11-29 05:40:15,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:15,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:16,877 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 05:40:16,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:16,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022889787] [2023-11-29 05:40:16,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022889787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:16,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:40:16,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:40:16,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254867645] [2023-11-29 05:40:16,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:16,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:16,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:16,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:16,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:40:16,880 INFO L87 Difference]: Start difference. First operand 4789 states and 7931 transitions. Second operand has 4 states, 4 states have (on average 177.25) 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 05:40:17,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:17,036 INFO L93 Difference]: Finished difference Result 12957 states and 21448 transitions. [2023-11-29 05:40:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:17,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 177.25) 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 05:40:17,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:17,045 INFO L225 Difference]: With dead ends: 12957 [2023-11-29 05:40:17,045 INFO L226 Difference]: Without dead ends: 8792 [2023-11-29 05:40:17,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:40:17,049 INFO L413 NwaCegarLoop]: 8097 mSDtfsCounter, 6615 mSDsluCounter, 15161 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6615 SdHoareTripleChecker+Valid, 23258 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:17,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6615 Valid, 23258 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:17,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8792 states. [2023-11-29 05:40:17,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8792 to 4792. [2023-11-29 05:40:17,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4792 states, 4791 states have (on average 1.6564391567522438) internal successors, (7936), 4791 states have internal predecessors, (7936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:17,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4792 states to 4792 states and 7936 transitions. [2023-11-29 05:40:17,116 INFO L78 Accepts]: Start accepts. Automaton has 4792 states and 7936 transitions. Word has length 709 [2023-11-29 05:40:17,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:17,116 INFO L495 AbstractCegarLoop]: Abstraction has 4792 states and 7936 transitions. [2023-11-29 05:40:17,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.25) 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 05:40:17,117 INFO L276 IsEmpty]: Start isEmpty. Operand 4792 states and 7936 transitions. [2023-11-29 05:40:17,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2023-11-29 05:40:17,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:17,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:17,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-29 05:40:17,122 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:17,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:17,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1151029082, now seen corresponding path program 1 times [2023-11-29 05:40:17,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:17,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754616579] [2023-11-29 05:40:17,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:17,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:18,615 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 05:40:18,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:18,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754616579] [2023-11-29 05:40:18,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754616579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:18,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:40:18,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:40:18,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291535043] [2023-11-29 05:40:18,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:18,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:40:18,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:18,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:40:18,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:40:18,618 INFO L87 Difference]: Start difference. First operand 4792 states and 7936 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 05:40:18,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:18,868 INFO L93 Difference]: Finished difference Result 12548 states and 20768 transitions. [2023-11-29 05:40:18,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:18,869 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 05:40:18,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:18,876 INFO L225 Difference]: With dead ends: 12548 [2023-11-29 05:40:18,877 INFO L226 Difference]: Without dead ends: 8380 [2023-11-29 05:40:18,880 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 05:40:18,881 INFO L413 NwaCegarLoop]: 7069 mSDtfsCounter, 25348 mSDsluCounter, 14132 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25348 SdHoareTripleChecker+Valid, 21201 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:18,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25348 Valid, 21201 Invalid, 26 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:40:18,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8380 states. [2023-11-29 05:40:18,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8380 to 4996. [2023-11-29 05:40:18,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4996 states, 4995 states have (on average 1.6566566566566567) internal successors, (8275), 4995 states have internal predecessors, (8275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:18,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4996 states to 4996 states and 8275 transitions. [2023-11-29 05:40:18,951 INFO L78 Accepts]: Start accepts. Automaton has 4996 states and 8275 transitions. Word has length 710 [2023-11-29 05:40:18,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:18,951 INFO L495 AbstractCegarLoop]: Abstraction has 4996 states and 8275 transitions. [2023-11-29 05:40:18,951 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 05:40:18,951 INFO L276 IsEmpty]: Start isEmpty. Operand 4996 states and 8275 transitions. [2023-11-29 05:40:19,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3400 [2023-11-29 05:40:19,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:19,013 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:19,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-11-29 05:40:19,014 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:19,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:19,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1030171081, now seen corresponding path program 1 times [2023-11-29 05:40:19,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:19,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021869618] [2023-11-29 05:40:19,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:19,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:19,399 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:40:19,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028833859] [2023-11-29 05:40:19,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:19,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:40:19,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:40:19,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:40:19,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:40:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:22,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 14687 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:40:22,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:40:24,480 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 112 proven. 410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:40:24,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:40:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2023-11-29 05:40:24,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:24,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021869618] [2023-11-29 05:40:24,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:40:24,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028833859] [2023-11-29 05:40:24,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028833859] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:40:24,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:40:24,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:40:24,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432905525] [2023-11-29 05:40:24,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:24,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:24,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:24,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:24,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:40:24,591 INFO L87 Difference]: Start difference. First operand 4996 states and 8275 transitions. Second operand has 4 states, 4 states have (on average 748.25) internal successors, (2993), 4 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:24,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:24,766 INFO L93 Difference]: Finished difference Result 13166 states and 21794 transitions. [2023-11-29 05:40:24,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:24,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 748.25) internal successors, (2993), 4 states have internal predecessors, (2993), 0 states have call successors, (0), 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 3399 [2023-11-29 05:40:24,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:24,778 INFO L225 Difference]: With dead ends: 13166 [2023-11-29 05:40:24,778 INFO L226 Difference]: Without dead ends: 8998 [2023-11-29 05:40:24,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6797 GetRequests, 6787 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:40:24,782 INFO L413 NwaCegarLoop]: 8092 mSDtfsCounter, 6615 mSDsluCounter, 15156 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6615 SdHoareTripleChecker+Valid, 23248 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:24,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6615 Valid, 23248 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:24,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8998 states. [2023-11-29 05:40:24,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8998 to 4996. [2023-11-29 05:40:24,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4996 states, 4995 states have (on average 1.6566566566566567) internal successors, (8275), 4995 states have internal predecessors, (8275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:24,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4996 states to 4996 states and 8275 transitions. [2023-11-29 05:40:24,852 INFO L78 Accepts]: Start accepts. Automaton has 4996 states and 8275 transitions. Word has length 3399 [2023-11-29 05:40:24,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:24,854 INFO L495 AbstractCegarLoop]: Abstraction has 4996 states and 8275 transitions. [2023-11-29 05:40:24,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 748.25) internal successors, (2993), 4 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:24,855 INFO L276 IsEmpty]: Start isEmpty. Operand 4996 states and 8275 transitions. [2023-11-29 05:40:24,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3401 [2023-11-29 05:40:24,915 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:24,917 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:24,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:40:25,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:40:25,118 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:25,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:25,120 INFO L85 PathProgramCache]: Analyzing trace with hash -534551441, now seen corresponding path program 1 times [2023-11-29 05:40:25,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:25,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670203481] [2023-11-29 05:40:25,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:25,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:25,454 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:40:25,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404159510] [2023-11-29 05:40:25,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:25,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:40:25,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:40:25,456 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:40:25,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:40:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:28,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 14690 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:40:28,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:40:30,376 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 114 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:40:30,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:40:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2023-11-29 05:40:30,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:30,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670203481] [2023-11-29 05:40:30,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:40:30,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404159510] [2023-11-29 05:40:30,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404159510] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:40:30,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:40:30,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:40:30,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829246698] [2023-11-29 05:40:30,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:30,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:30,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:30,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:30,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:40:30,479 INFO L87 Difference]: Start difference. First operand 4996 states and 8275 transitions. Second operand has 4 states, 4 states have (on average 749.5) internal successors, (2998), 4 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:30,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:30,651 INFO L93 Difference]: Finished difference Result 13171 states and 21801 transitions. [2023-11-29 05:40:30,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:30,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 749.5) internal successors, (2998), 4 states have internal predecessors, (2998), 0 states have call successors, (0), 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 3400 [2023-11-29 05:40:30,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:30,663 INFO L225 Difference]: With dead ends: 13171 [2023-11-29 05:40:30,663 INFO L226 Difference]: Without dead ends: 9000 [2023-11-29 05:40:30,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6799 GetRequests, 6789 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:40:30,667 INFO L413 NwaCegarLoop]: 8082 mSDtfsCounter, 6610 mSDsluCounter, 15146 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6610 SdHoareTripleChecker+Valid, 23228 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:30,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6610 Valid, 23228 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:30,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9000 states. [2023-11-29 05:40:30,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9000 to 5001. [2023-11-29 05:40:30,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5001 states, 5000 states have (on average 1.6564) internal successors, (8282), 5000 states have internal predecessors, (8282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:30,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5001 states to 5001 states and 8282 transitions. [2023-11-29 05:40:30,736 INFO L78 Accepts]: Start accepts. Automaton has 5001 states and 8282 transitions. Word has length 3400 [2023-11-29 05:40:30,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:30,738 INFO L495 AbstractCegarLoop]: Abstraction has 5001 states and 8282 transitions. [2023-11-29 05:40:30,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 749.5) internal successors, (2998), 4 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:30,739 INFO L276 IsEmpty]: Start isEmpty. Operand 5001 states and 8282 transitions. [2023-11-29 05:40:30,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3402 [2023-11-29 05:40:30,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:30,802 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:30,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:40:31,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-29 05:40:31,003 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:31,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:31,005 INFO L85 PathProgramCache]: Analyzing trace with hash -834112427, now seen corresponding path program 1 times [2023-11-29 05:40:31,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:31,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375618182] [2023-11-29 05:40:31,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:31,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:31,393 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:40:31,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92324358] [2023-11-29 05:40:31,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:31,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:40:31,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:40:31,395 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:40:31,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:40:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:34,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 14693 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:40:34,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:40:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 118 proven. 404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:40:36,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:40:36,192 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-11-29 05:40:36,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:36,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375618182] [2023-11-29 05:40:36,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:40:36,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92324358] [2023-11-29 05:40:36,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92324358] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:40:36,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:40:36,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:40:36,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300162102] [2023-11-29 05:40:36,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:36,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:36,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:36,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:36,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:40:36,204 INFO L87 Difference]: Start difference. First operand 5001 states and 8282 transitions. Second operand has 4 states, 4 states have (on average 750.75) internal successors, (3003), 4 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:36,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:36,376 INFO L93 Difference]: Finished difference Result 13186 states and 21822 transitions. [2023-11-29 05:40:36,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:36,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 750.75) internal successors, (3003), 4 states have internal predecessors, (3003), 0 states have call successors, (0), 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 3401 [2023-11-29 05:40:36,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:36,388 INFO L225 Difference]: With dead ends: 13186 [2023-11-29 05:40:36,388 INFO L226 Difference]: Without dead ends: 9004 [2023-11-29 05:40:36,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6801 GetRequests, 6791 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:40:36,392 INFO L413 NwaCegarLoop]: 8072 mSDtfsCounter, 6607 mSDsluCounter, 15136 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6607 SdHoareTripleChecker+Valid, 23208 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:36,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6607 Valid, 23208 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:36,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9004 states. [2023-11-29 05:40:36,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9004 to 5006. [2023-11-29 05:40:36,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5006 states, 5005 states have (on average 1.6561438561438562) internal successors, (8289), 5005 states have internal predecessors, (8289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:36,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5006 states to 5006 states and 8289 transitions. [2023-11-29 05:40:36,463 INFO L78 Accepts]: Start accepts. Automaton has 5006 states and 8289 transitions. Word has length 3401 [2023-11-29 05:40:36,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:36,465 INFO L495 AbstractCegarLoop]: Abstraction has 5006 states and 8289 transitions. [2023-11-29 05:40:36,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 750.75) internal successors, (3003), 4 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:36,466 INFO L276 IsEmpty]: Start isEmpty. Operand 5006 states and 8289 transitions. [2023-11-29 05:40:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3403 [2023-11-29 05:40:36,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:36,525 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:36,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:40:36,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-29 05:40:36,727 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:36,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:36,728 INFO L85 PathProgramCache]: Analyzing trace with hash -898028829, now seen corresponding path program 1 times [2023-11-29 05:40:36,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:36,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606705934] [2023-11-29 05:40:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:36,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:37,070 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:40:37,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72152312] [2023-11-29 05:40:37,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:37,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:40:37,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:40:37,073 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:40:37,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:40:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:40,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 14696 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:40:40,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:40:41,877 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 122 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:40:41,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:40:41,947 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2023-11-29 05:40:41,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:41,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606705934] [2023-11-29 05:40:41,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:40:41,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72152312] [2023-11-29 05:40:41,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72152312] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:40:41,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:40:41,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:40:41,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260554745] [2023-11-29 05:40:41,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:41,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:41,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:41,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:41,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:40:41,957 INFO L87 Difference]: Start difference. First operand 5006 states and 8289 transitions. Second operand has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:42,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:42,177 INFO L93 Difference]: Finished difference Result 13201 states and 21843 transitions. [2023-11-29 05:40:42,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:42,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 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 3402 [2023-11-29 05:40:42,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:42,190 INFO L225 Difference]: With dead ends: 13201 [2023-11-29 05:40:42,190 INFO L226 Difference]: Without dead ends: 9008 [2023-11-29 05:40:42,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6803 GetRequests, 6793 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:40:42,196 INFO L413 NwaCegarLoop]: 8062 mSDtfsCounter, 6604 mSDsluCounter, 15126 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6604 SdHoareTripleChecker+Valid, 23188 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:42,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6604 Valid, 23188 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:42,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9008 states. [2023-11-29 05:40:42,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9008 to 5011. [2023-11-29 05:40:42,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5011 states, 5010 states have (on average 1.6558882235528942) internal successors, (8296), 5010 states have internal predecessors, (8296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:42,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5011 states to 5011 states and 8296 transitions. [2023-11-29 05:40:42,266 INFO L78 Accepts]: Start accepts. Automaton has 5011 states and 8296 transitions. Word has length 3402 [2023-11-29 05:40:42,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:42,268 INFO L495 AbstractCegarLoop]: Abstraction has 5011 states and 8296 transitions. [2023-11-29 05:40:42,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:42,269 INFO L276 IsEmpty]: Start isEmpty. Operand 5011 states and 8296 transitions. [2023-11-29 05:40:42,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3404 [2023-11-29 05:40:42,325 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:42,327 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:42,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:40:42,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-29 05:40:42,528 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:42,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:42,530 INFO L85 PathProgramCache]: Analyzing trace with hash -137794335, now seen corresponding path program 1 times [2023-11-29 05:40:42,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:42,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575414325] [2023-11-29 05:40:42,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:42,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:42,882 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:40:42,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138486579] [2023-11-29 05:40:42,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:42,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:40:42,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:40:42,884 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:40:42,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:40:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:46,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 14699 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:40:46,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:40:47,478 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 126 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:40:47,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:40:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-11-29 05:40:47,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:47,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575414325] [2023-11-29 05:40:47,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:40:47,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138486579] [2023-11-29 05:40:47,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138486579] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:40:47,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:40:47,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:40:47,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881387678] [2023-11-29 05:40:47,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:47,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:47,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:47,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:47,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:40:47,561 INFO L87 Difference]: Start difference. First operand 5011 states and 8296 transitions. Second operand has 4 states, 4 states have (on average 753.25) internal successors, (3013), 4 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:47,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:47,737 INFO L93 Difference]: Finished difference Result 13216 states and 21864 transitions. [2023-11-29 05:40:47,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:47,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 753.25) internal successors, (3013), 4 states have internal predecessors, (3013), 0 states have call successors, (0), 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 3403 [2023-11-29 05:40:47,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:47,748 INFO L225 Difference]: With dead ends: 13216 [2023-11-29 05:40:47,748 INFO L226 Difference]: Without dead ends: 9012 [2023-11-29 05:40:47,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6805 GetRequests, 6795 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:40:47,752 INFO L413 NwaCegarLoop]: 8052 mSDtfsCounter, 6601 mSDsluCounter, 15116 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6601 SdHoareTripleChecker+Valid, 23168 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:47,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6601 Valid, 23168 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:47,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9012 states. [2023-11-29 05:40:47,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9012 to 5016. [2023-11-29 05:40:47,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5016 states, 5015 states have (on average 1.6556331006979064) internal successors, (8303), 5015 states have internal predecessors, (8303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5016 states to 5016 states and 8303 transitions. [2023-11-29 05:40:47,828 INFO L78 Accepts]: Start accepts. Automaton has 5016 states and 8303 transitions. Word has length 3403 [2023-11-29 05:40:47,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:47,830 INFO L495 AbstractCegarLoop]: Abstraction has 5016 states and 8303 transitions. [2023-11-29 05:40:47,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 753.25) internal successors, (3013), 4 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:47,832 INFO L276 IsEmpty]: Start isEmpty. Operand 5016 states and 8303 transitions. [2023-11-29 05:40:47,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3405 [2023-11-29 05:40:47,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:47,911 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:47,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:40:48,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-11-29 05:40:48,112 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:48,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:48,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1751407785, now seen corresponding path program 1 times [2023-11-29 05:40:48,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:48,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234171585] [2023-11-29 05:40:48,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:48,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:48,422 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:40:48,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228182878] [2023-11-29 05:40:48,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:48,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:40:48,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:40:48,424 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:40:48,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:40:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:51,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 14702 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:40:52,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:40:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 130 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:40:53,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:40:53,384 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-11-29 05:40:53,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:53,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234171585] [2023-11-29 05:40:53,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:40:53,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228182878] [2023-11-29 05:40:53,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228182878] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:40:53,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:40:53,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:40:53,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577976407] [2023-11-29 05:40:53,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:53,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:53,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:53,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:53,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:40:53,392 INFO L87 Difference]: Start difference. First operand 5016 states and 8303 transitions. Second operand has 4 states, 4 states have (on average 754.5) internal successors, (3018), 4 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:53,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:53,560 INFO L93 Difference]: Finished difference Result 13231 states and 21885 transitions. [2023-11-29 05:40:53,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:53,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 754.5) internal successors, (3018), 4 states have internal predecessors, (3018), 0 states have call successors, (0), 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 3404 [2023-11-29 05:40:53,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:53,572 INFO L225 Difference]: With dead ends: 13231 [2023-11-29 05:40:53,572 INFO L226 Difference]: Without dead ends: 9016 [2023-11-29 05:40:53,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6807 GetRequests, 6797 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:40:53,576 INFO L413 NwaCegarLoop]: 8042 mSDtfsCounter, 6598 mSDsluCounter, 15106 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6598 SdHoareTripleChecker+Valid, 23148 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:53,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6598 Valid, 23148 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:53,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9016 states. [2023-11-29 05:40:53,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9016 to 5021. [2023-11-29 05:40:53,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5021 states, 5020 states have (on average 1.655378486055777) internal successors, (8310), 5020 states have internal predecessors, (8310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:53,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 8310 transitions. [2023-11-29 05:40:53,646 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 8310 transitions. Word has length 3404 [2023-11-29 05:40:53,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:53,647 INFO L495 AbstractCegarLoop]: Abstraction has 5021 states and 8310 transitions. [2023-11-29 05:40:53,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 754.5) internal successors, (3018), 4 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 8310 transitions. [2023-11-29 05:40:53,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3406 [2023-11-29 05:40:53,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:53,707 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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05:40:53,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:40:53,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:40:53,908 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:53,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:53,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1908495213, now seen corresponding path program 1 times [2023-11-29 05:40:53,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:53,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237217054] [2023-11-29 05:40:53,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:53,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:54,210 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:40:54,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690138536] [2023-11-29 05:40:54,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:54,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:40:54,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:40:54,212 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:40:54,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:40:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:57,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 14705 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:40:57,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:40:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 134 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:40:58,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:40:59,062 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2023-11-29 05:40:59,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:59,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237217054] [2023-11-29 05:40:59,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:40:59,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690138536] [2023-11-29 05:40:59,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690138536] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:40:59,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:40:59,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:40:59,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500370601] [2023-11-29 05:40:59,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:59,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:59,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:59,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:59,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:40:59,070 INFO L87 Difference]: Start difference. First operand 5021 states and 8310 transitions. Second operand has 4 states, 4 states have (on average 755.75) internal successors, (3023), 4 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:59,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:59,239 INFO L93 Difference]: Finished difference Result 13246 states and 21906 transitions. [2023-11-29 05:40:59,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:40:59,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 755.75) internal successors, (3023), 4 states have internal predecessors, (3023), 0 states have call successors, (0), 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 3405 [2023-11-29 05:40:59,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:59,252 INFO L225 Difference]: With dead ends: 13246 [2023-11-29 05:40:59,252 INFO L226 Difference]: Without dead ends: 9020 [2023-11-29 05:40:59,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6809 GetRequests, 6799 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:40:59,257 INFO L413 NwaCegarLoop]: 8032 mSDtfsCounter, 6595 mSDsluCounter, 15096 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6595 SdHoareTripleChecker+Valid, 23128 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:59,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6595 Valid, 23128 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:40:59,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9020 states. [2023-11-29 05:40:59,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9020 to 5026. [2023-11-29 05:40:59,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 5025 states have (on average 1.6551243781094527) internal successors, (8317), 5025 states have internal predecessors, (8317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:59,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 8317 transitions. [2023-11-29 05:40:59,328 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 8317 transitions. Word has length 3405 [2023-11-29 05:40:59,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:59,330 INFO L495 AbstractCegarLoop]: Abstraction has 5026 states and 8317 transitions. [2023-11-29 05:40:59,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 755.75) internal successors, (3023), 4 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:59,331 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 8317 transitions. [2023-11-29 05:40:59,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3407 [2023-11-29 05:40:59,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:59,390 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:59,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 05:40:59,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:40:59,591 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:59,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:59,594 INFO L85 PathProgramCache]: Analyzing trace with hash 517180875, now seen corresponding path program 1 times [2023-11-29 05:40:59,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:59,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422882285] [2023-11-29 05:40:59,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:59,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:59,891 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:40:59,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028721931] [2023-11-29 05:40:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:59,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:40:59,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:40:59,893 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:40:59,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:41:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:03,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 14708 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:41:03,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:04,344 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 138 proven. 384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:41:04,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:41:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-29 05:41:04,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:04,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422882285] [2023-11-29 05:41:04,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:41:04,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028721931] [2023-11-29 05:41:04,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028721931] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:41:04,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:41:04,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:41:04,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467181405] [2023-11-29 05:41:04,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:04,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:41:04,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:04,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:41:04,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:41:04,446 INFO L87 Difference]: Start difference. First operand 5026 states and 8317 transitions. Second operand has 5 states, 5 states have (on average 605.6) internal successors, (3028), 5 states have internal predecessors, (3028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:04,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:04,786 INFO L93 Difference]: Finished difference Result 17490 states and 28916 transitions. [2023-11-29 05:41:04,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:41:04,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 605.6) internal successors, (3028), 5 states have internal predecessors, (3028), 0 states have call successors, (0), 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 3406 [2023-11-29 05:41:04,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:04,802 INFO L225 Difference]: With dead ends: 17490 [2023-11-29 05:41:04,802 INFO L226 Difference]: Without dead ends: 13253 [2023-11-29 05:41:04,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6813 GetRequests, 6799 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:41:04,807 INFO L413 NwaCegarLoop]: 14731 mSDtfsCounter, 13304 mSDsluCounter, 36516 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13304 SdHoareTripleChecker+Valid, 51247 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:04,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13304 Valid, 51247 Invalid, 44 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:41:04,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13253 states. [2023-11-29 05:41:04,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13253 to 5031. [2023-11-29 05:41:04,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5031 states, 5030 states have (on average 1.6548707753479126) internal successors, (8324), 5030 states have internal predecessors, (8324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5031 states to 5031 states and 8324 transitions. [2023-11-29 05:41:04,892 INFO L78 Accepts]: Start accepts. Automaton has 5031 states and 8324 transitions. Word has length 3406 [2023-11-29 05:41:04,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:04,894 INFO L495 AbstractCegarLoop]: Abstraction has 5031 states and 8324 transitions. [2023-11-29 05:41:04,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 605.6) internal successors, (3028), 5 states have internal predecessors, (3028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:04,895 INFO L276 IsEmpty]: Start isEmpty. Operand 5031 states and 8324 transitions. [2023-11-29 05:41:04,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3408 [2023-11-29 05:41:04,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:04,954 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:41:04,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:41:05,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:05,155 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:05,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:05,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1664653319, now seen corresponding path program 1 times [2023-11-29 05:41:05,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:05,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489031169] [2023-11-29 05:41:05,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:05,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:05,455 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:41:05,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091236917] [2023-11-29 05:41:05,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:05,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:05,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:05,457 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:41:05,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:41:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:08,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 14711 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:41:08,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 142 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:41:10,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:41:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2023-11-29 05:41:10,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:10,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489031169] [2023-11-29 05:41:10,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:41:10,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091236917] [2023-11-29 05:41:10,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091236917] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:41:10,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:41:10,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:41:10,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795584192] [2023-11-29 05:41:10,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:10,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:41:10,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:10,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:41:10,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:41:10,208 INFO L87 Difference]: Start difference. First operand 5031 states and 8324 transitions. Second operand has 4 states, 4 states have (on average 758.25) internal successors, (3033), 4 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:10,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:10,374 INFO L93 Difference]: Finished difference Result 13276 states and 21948 transitions. [2023-11-29 05:41:10,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:41:10,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 758.25) internal successors, (3033), 4 states have internal predecessors, (3033), 0 states have call successors, (0), 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 3407 [2023-11-29 05:41:10,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:10,385 INFO L225 Difference]: With dead ends: 13276 [2023-11-29 05:41:10,385 INFO L226 Difference]: Without dead ends: 9028 [2023-11-29 05:41:10,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6813 GetRequests, 6803 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:41:10,390 INFO L413 NwaCegarLoop]: 8012 mSDtfsCounter, 6589 mSDsluCounter, 15076 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6589 SdHoareTripleChecker+Valid, 23088 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:10,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6589 Valid, 23088 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:41:10,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9028 states. [2023-11-29 05:41:10,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9028 to 5036. [2023-11-29 05:41:10,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5036 states, 5035 states have (on average 1.654617676266137) internal successors, (8331), 5035 states have internal predecessors, (8331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:10,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5036 states to 5036 states and 8331 transitions. [2023-11-29 05:41:10,459 INFO L78 Accepts]: Start accepts. Automaton has 5036 states and 8331 transitions. Word has length 3407 [2023-11-29 05:41:10,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:10,461 INFO L495 AbstractCegarLoop]: Abstraction has 5036 states and 8331 transitions. [2023-11-29 05:41:10,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 758.25) internal successors, (3033), 4 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:10,462 INFO L276 IsEmpty]: Start isEmpty. Operand 5036 states and 8331 transitions. [2023-11-29 05:41:10,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3409 [2023-11-29 05:41:10,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:10,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:41:10,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:41:10,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:10,761 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:10,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:10,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1062622657, now seen corresponding path program 1 times [2023-11-29 05:41:10,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:10,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758619115] [2023-11-29 05:41:10,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:10,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:11,062 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:41:11,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1967292325] [2023-11-29 05:41:11,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:11,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:11,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:11,064 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:41:11,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:41:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:14,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 14714 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:41:14,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 146 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:41:15,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:41:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-11-29 05:41:15,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:15,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758619115] [2023-11-29 05:41:15,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:41:15,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967292325] [2023-11-29 05:41:15,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967292325] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:41:15,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:41:15,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:41:15,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087834119] [2023-11-29 05:41:15,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:15,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:41:15,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:15,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:41:15,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:41:15,649 INFO L87 Difference]: Start difference. First operand 5036 states and 8331 transitions. Second operand has 4 states, 4 states have (on average 759.5) internal successors, (3038), 4 states have internal predecessors, (3038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:15,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:15,828 INFO L93 Difference]: Finished difference Result 13291 states and 21969 transitions. [2023-11-29 05:41:15,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:41:15,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 759.5) internal successors, (3038), 4 states have internal predecessors, (3038), 0 states have call successors, (0), 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 3408 [2023-11-29 05:41:15,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:15,839 INFO L225 Difference]: With dead ends: 13291 [2023-11-29 05:41:15,839 INFO L226 Difference]: Without dead ends: 9032 [2023-11-29 05:41:15,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6815 GetRequests, 6805 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:41:15,843 INFO L413 NwaCegarLoop]: 8002 mSDtfsCounter, 6586 mSDsluCounter, 15066 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6586 SdHoareTripleChecker+Valid, 23068 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:15,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6586 Valid, 23068 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:41:15,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9032 states. [2023-11-29 05:41:15,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9032 to 5041. [2023-11-29 05:41:15,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5041 states, 5040 states have (on average 1.6543650793650793) internal successors, (8338), 5040 states have internal predecessors, (8338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:15,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5041 states to 5041 states and 8338 transitions. [2023-11-29 05:41:15,913 INFO L78 Accepts]: Start accepts. Automaton has 5041 states and 8338 transitions. Word has length 3408 [2023-11-29 05:41:15,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:15,915 INFO L495 AbstractCegarLoop]: Abstraction has 5041 states and 8338 transitions. [2023-11-29 05:41:15,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 759.5) internal successors, (3038), 4 states have internal predecessors, (3038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:15,916 INFO L276 IsEmpty]: Start isEmpty. Operand 5041 states and 8338 transitions. [2023-11-29 05:41:15,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3410 [2023-11-29 05:41:15,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:15,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:16,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 05:41:16,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:16,191 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:16,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:16,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1640830331, now seen corresponding path program 1 times [2023-11-29 05:41:16,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:16,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490502628] [2023-11-29 05:41:16,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:16,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:16,537 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:41:16,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24456125] [2023-11-29 05:41:16,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:16,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:16,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:16,539 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:41:16,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:41:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:20,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 14717 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:41:20,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:21,544 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 150 proven. 372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:41:21,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:41:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-11-29 05:41:21,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:21,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490502628] [2023-11-29 05:41:21,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:41:21,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24456125] [2023-11-29 05:41:21,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24456125] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:41:21,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:41:21,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:41:21,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374048667] [2023-11-29 05:41:21,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:21,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:41:21,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:21,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:41:21,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:41:21,617 INFO L87 Difference]: Start difference. First operand 5041 states and 8338 transitions. Second operand has 4 states, 4 states have (on average 760.75) internal successors, (3043), 4 states have internal predecessors, (3043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:21,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:21,790 INFO L93 Difference]: Finished difference Result 13306 states and 21990 transitions. [2023-11-29 05:41:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:41:21,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 760.75) internal successors, (3043), 4 states have internal predecessors, (3043), 0 states have call successors, (0), 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 3409 [2023-11-29 05:41:21,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:21,800 INFO L225 Difference]: With dead ends: 13306 [2023-11-29 05:41:21,800 INFO L226 Difference]: Without dead ends: 9036 [2023-11-29 05:41:21,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6817 GetRequests, 6807 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:41:21,805 INFO L413 NwaCegarLoop]: 7992 mSDtfsCounter, 6583 mSDsluCounter, 15056 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6583 SdHoareTripleChecker+Valid, 23048 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:21,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6583 Valid, 23048 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:41:21,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9036 states. [2023-11-29 05:41:21,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9036 to 5046. [2023-11-29 05:41:21,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5046 states, 5045 states have (on average 1.6541129831516352) internal successors, (8345), 5045 states have internal predecessors, (8345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:21,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5046 states to 5046 states and 8345 transitions. [2023-11-29 05:41:21,875 INFO L78 Accepts]: Start accepts. Automaton has 5046 states and 8345 transitions. Word has length 3409 [2023-11-29 05:41:21,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:21,877 INFO L495 AbstractCegarLoop]: Abstraction has 5046 states and 8345 transitions. [2023-11-29 05:41:21,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 760.75) internal successors, (3043), 4 states have internal predecessors, (3043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:21,878 INFO L276 IsEmpty]: Start isEmpty. Operand 5046 states and 8345 transitions. [2023-11-29 05:41:21,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3411 [2023-11-29 05:41:21,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:21,936 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1] [2023-11-29 05:41:21,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 05:41:22,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2023-11-29 05:41:22,137 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:22,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:22,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1256634547, now seen corresponding path program 1 times [2023-11-29 05:41:22,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:22,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367608748] [2023-11-29 05:41:22,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:22,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:22,436 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:41:22,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658954545] [2023-11-29 05:41:22,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:22,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:22,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:22,437 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:41:22,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 05:41:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:25,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 14720 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:41:25,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 154 proven. 368 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:41:26,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:41:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-29 05:41:26,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:26,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367608748] [2023-11-29 05:41:26,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:41:26,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658954545] [2023-11-29 05:41:26,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658954545] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:41:26,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:41:27,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:41:27,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215806839] [2023-11-29 05:41:27,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:27,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:41:27,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:27,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:41:27,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:41:27,007 INFO L87 Difference]: Start difference. First operand 5046 states and 8345 transitions. Second operand has 4 states, 4 states have (on average 762.0) internal successors, (3048), 4 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:27,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:27,183 INFO L93 Difference]: Finished difference Result 13321 states and 22011 transitions. [2023-11-29 05:41:27,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:41:27,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 762.0) internal successors, (3048), 4 states have internal predecessors, (3048), 0 states have call successors, (0), 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 3410 [2023-11-29 05:41:27,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:27,196 INFO L225 Difference]: With dead ends: 13321 [2023-11-29 05:41:27,196 INFO L226 Difference]: Without dead ends: 9040 [2023-11-29 05:41:27,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6819 GetRequests, 6809 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:41:27,200 INFO L413 NwaCegarLoop]: 7982 mSDtfsCounter, 6580 mSDsluCounter, 15046 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6580 SdHoareTripleChecker+Valid, 23028 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:27,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6580 Valid, 23028 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:41:27,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9040 states. [2023-11-29 05:41:27,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9040 to 5051. [2023-11-29 05:41:27,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5051 states, 5050 states have (on average 1.6538613861386138) internal successors, (8352), 5050 states have internal predecessors, (8352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5051 states to 5051 states and 8352 transitions. [2023-11-29 05:41:27,270 INFO L78 Accepts]: Start accepts. Automaton has 5051 states and 8352 transitions. Word has length 3410 [2023-11-29 05:41:27,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:27,272 INFO L495 AbstractCegarLoop]: Abstraction has 5051 states and 8352 transitions. [2023-11-29 05:41:27,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 762.0) internal successors, (3048), 4 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:27,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5051 states and 8352 transitions. [2023-11-29 05:41:27,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3412 [2023-11-29 05:41:27,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:27,330 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1] [2023-11-29 05:41:27,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 05:41:27,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-11-29 05:41:27,531 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:27,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:27,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2082151185, now seen corresponding path program 1 times [2023-11-29 05:41:27,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:27,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306191963] [2023-11-29 05:41:27,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:27,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:27,826 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:41:27,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1011983804] [2023-11-29 05:41:27,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:27,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:27,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:27,828 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:41:27,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 05:41:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:31,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 14723 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:41:31,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:32,245 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 158 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:41:32,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:41:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2023-11-29 05:41:32,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:32,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306191963] [2023-11-29 05:41:32,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:41:32,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011983804] [2023-11-29 05:41:32,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011983804] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:41:32,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:41:32,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:41:32,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108459444] [2023-11-29 05:41:32,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:32,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:41:32,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:32,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:41:32,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:41:32,314 INFO L87 Difference]: Start difference. First operand 5051 states and 8352 transitions. Second operand has 4 states, 4 states have (on average 762.75) internal successors, (3051), 4 states have internal predecessors, (3051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:32,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:32,479 INFO L93 Difference]: Finished difference Result 13333 states and 22027 transitions. [2023-11-29 05:41:32,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:41:32,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 762.75) internal successors, (3051), 4 states have internal predecessors, (3051), 0 states have call successors, (0), 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 3411 [2023-11-29 05:41:32,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:32,490 INFO L225 Difference]: With dead ends: 13333 [2023-11-29 05:41:32,490 INFO L226 Difference]: Without dead ends: 9041 [2023-11-29 05:41:32,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6821 GetRequests, 6811 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:41:32,494 INFO L413 NwaCegarLoop]: 7977 mSDtfsCounter, 6579 mSDsluCounter, 15041 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6579 SdHoareTripleChecker+Valid, 23018 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:32,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6579 Valid, 23018 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:41:32,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9041 states. [2023-11-29 05:41:32,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9041 to 5053. [2023-11-29 05:41:32,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5053 states, 5052 states have (on average 1.6536025336500395) internal successors, (8354), 5052 states have internal predecessors, (8354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:32,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5053 states to 5053 states and 8354 transitions. [2023-11-29 05:41:32,564 INFO L78 Accepts]: Start accepts. Automaton has 5053 states and 8354 transitions. Word has length 3411 [2023-11-29 05:41:32,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:32,566 INFO L495 AbstractCegarLoop]: Abstraction has 5053 states and 8354 transitions. [2023-11-29 05:41:32,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 762.75) internal successors, (3051), 4 states have internal predecessors, (3051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:32,567 INFO L276 IsEmpty]: Start isEmpty. Operand 5053 states and 8354 transitions. [2023-11-29 05:41:32,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3413 [2023-11-29 05:41:32,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:32,624 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:32,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 05:41:32,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:32,825 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:32,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:32,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1827193331, now seen corresponding path program 1 times [2023-11-29 05:41:32,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:32,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832193313] [2023-11-29 05:41:32,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:32,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:33,125 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:41:33,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21237000] [2023-11-29 05:41:33,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:33,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:33,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:33,127 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:41:33,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 05:41:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:36,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 14726 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:41:36,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 160 proven. 362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:41:37,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:41:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2023-11-29 05:41:37,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:37,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832193313] [2023-11-29 05:41:37,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:41:37,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21237000] [2023-11-29 05:41:37,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21237000] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:41:37,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:41:37,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:41:37,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975276144] [2023-11-29 05:41:37,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:37,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:41:37,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:37,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:41:37,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:41:37,767 INFO L87 Difference]: Start difference. First operand 5053 states and 8354 transitions. Second operand has 4 states, 4 states have (on average 764.0) internal successors, (3056), 4 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:37,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:37,935 INFO L93 Difference]: Finished difference Result 13342 states and 22038 transitions. [2023-11-29 05:41:37,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:41:37,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 764.0) internal successors, (3056), 4 states have internal predecessors, (3056), 0 states have call successors, (0), 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 3412 [2023-11-29 05:41:37,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:37,947 INFO L225 Difference]: With dead ends: 13342 [2023-11-29 05:41:37,947 INFO L226 Difference]: Without dead ends: 9045 [2023-11-29 05:41:37,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6823 GetRequests, 6813 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:41:37,951 INFO L413 NwaCegarLoop]: 7967 mSDtfsCounter, 6574 mSDsluCounter, 15031 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6574 SdHoareTripleChecker+Valid, 22998 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:37,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6574 Valid, 22998 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:41:37,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9045 states. [2023-11-29 05:41:38,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9045 to 5058. [2023-11-29 05:41:38,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5058 states, 5057 states have (on average 1.6533517895985763) internal successors, (8361), 5057 states have internal predecessors, (8361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:38,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5058 states to 5058 states and 8361 transitions. [2023-11-29 05:41:38,021 INFO L78 Accepts]: Start accepts. Automaton has 5058 states and 8361 transitions. Word has length 3412 [2023-11-29 05:41:38,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:38,024 INFO L495 AbstractCegarLoop]: Abstraction has 5058 states and 8361 transitions. [2023-11-29 05:41:38,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 764.0) internal successors, (3056), 4 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:38,024 INFO L276 IsEmpty]: Start isEmpty. Operand 5058 states and 8361 transitions. [2023-11-29 05:41:38,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3414 [2023-11-29 05:41:38,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:38,088 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:41:38,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 05:41:38,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-11-29 05:41:38,289 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:38,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:38,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1809506459, now seen corresponding path program 1 times [2023-11-29 05:41:38,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:38,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534267717] [2023-11-29 05:41:38,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:38,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:38,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:41:38,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166810473] [2023-11-29 05:41:38,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:38,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:38,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:38,638 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:41:38,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 05:41:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 14730 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:41:42,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 164 proven. 358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:41:43,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:41:43,394 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2023-11-29 05:41:43,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:43,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534267717] [2023-11-29 05:41:43,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:41:43,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166810473] [2023-11-29 05:41:43,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166810473] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:41:43,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:41:43,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:41:43,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025581907] [2023-11-29 05:41:43,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:43,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:41:43,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:43,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:41:43,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:41:43,400 INFO L87 Difference]: Start difference. First operand 5058 states and 8361 transitions. Second operand has 4 states, 4 states have (on average 765.25) internal successors, (3061), 4 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:43,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:43,578 INFO L93 Difference]: Finished difference Result 13357 states and 22059 transitions. [2023-11-29 05:41:43,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:41:43,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 765.25) internal successors, (3061), 4 states have internal predecessors, (3061), 0 states have call successors, (0), 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 3413 [2023-11-29 05:41:43,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:43,589 INFO L225 Difference]: With dead ends: 13357 [2023-11-29 05:41:43,589 INFO L226 Difference]: Without dead ends: 9049 [2023-11-29 05:41:43,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6825 GetRequests, 6815 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:41:43,593 INFO L413 NwaCegarLoop]: 7957 mSDtfsCounter, 6571 mSDsluCounter, 15021 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6571 SdHoareTripleChecker+Valid, 22978 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:43,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6571 Valid, 22978 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:41:43,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9049 states. [2023-11-29 05:41:43,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9049 to 5063. [2023-11-29 05:41:43,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5063 states, 5062 states have (on average 1.6531015408929277) internal successors, (8368), 5062 states have internal predecessors, (8368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:43,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5063 states to 5063 states and 8368 transitions. [2023-11-29 05:41:43,666 INFO L78 Accepts]: Start accepts. Automaton has 5063 states and 8368 transitions. Word has length 3413 [2023-11-29 05:41:43,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:43,668 INFO L495 AbstractCegarLoop]: Abstraction has 5063 states and 8368 transitions. [2023-11-29 05:41:43,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 765.25) internal successors, (3061), 4 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:43,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5063 states and 8368 transitions. [2023-11-29 05:41:43,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3415 [2023-11-29 05:41:43,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:43,726 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:41:43,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 05:41:43,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-11-29 05:41:43,927 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:43,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:43,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1986809857, now seen corresponding path program 1 times [2023-11-29 05:41:43,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:43,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891922688] [2023-11-29 05:41:43,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:43,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:44,227 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:41:44,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30102815] [2023-11-29 05:41:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:44,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:44,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:44,229 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:41:44,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 05:41:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 14733 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:41:47,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 168 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:41:49,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:41:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2023-11-29 05:41:49,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:49,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891922688] [2023-11-29 05:41:49,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:41:49,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30102815] [2023-11-29 05:41:49,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30102815] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:41:49,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:41:49,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:41:49,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235722039] [2023-11-29 05:41:49,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:49,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:41:49,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:49,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:41:49,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:41:49,117 INFO L87 Difference]: Start difference. First operand 5063 states and 8368 transitions. Second operand has 4 states, 4 states have (on average 766.5) internal successors, (3066), 4 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:49,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:49,297 INFO L93 Difference]: Finished difference Result 13372 states and 22080 transitions. [2023-11-29 05:41:49,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:41:49,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 766.5) internal successors, (3066), 4 states have internal predecessors, (3066), 0 states have call successors, (0), 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 3414 [2023-11-29 05:41:49,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:49,308 INFO L225 Difference]: With dead ends: 13372 [2023-11-29 05:41:49,308 INFO L226 Difference]: Without dead ends: 9053 [2023-11-29 05:41:49,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6827 GetRequests, 6817 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:41:49,312 INFO L413 NwaCegarLoop]: 7947 mSDtfsCounter, 6568 mSDsluCounter, 15011 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6568 SdHoareTripleChecker+Valid, 22958 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:49,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6568 Valid, 22958 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:41:49,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9053 states. [2023-11-29 05:41:49,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9053 to 5068. [2023-11-29 05:41:49,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5068 states, 5067 states have (on average 1.6528517860667062) internal successors, (8375), 5067 states have internal predecessors, (8375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:49,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5068 states to 5068 states and 8375 transitions. [2023-11-29 05:41:49,439 INFO L78 Accepts]: Start accepts. Automaton has 5068 states and 8375 transitions. Word has length 3414 [2023-11-29 05:41:49,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:49,441 INFO L495 AbstractCegarLoop]: Abstraction has 5068 states and 8375 transitions. [2023-11-29 05:41:49,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 766.5) internal successors, (3066), 4 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:49,441 INFO L276 IsEmpty]: Start isEmpty. Operand 5068 states and 8375 transitions. [2023-11-29 05:41:49,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3416 [2023-11-29 05:41:49,505 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:49,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:49,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 05:41:49,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:49,707 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:49,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:49,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1436004005, now seen corresponding path program 1 times [2023-11-29 05:41:49,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:49,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744636953] [2023-11-29 05:41:49,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:49,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:50,007 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:41:50,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062659006] [2023-11-29 05:41:50,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:50,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:50,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:50,008 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:41:50,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 05:41:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:53,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 14737 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:41:53,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:54,639 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 172 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:41:54,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:41:54,703 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2023-11-29 05:41:54,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:54,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744636953] [2023-11-29 05:41:54,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:41:54,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062659006] [2023-11-29 05:41:54,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062659006] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:41:54,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:41:54,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:41:54,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283292917] [2023-11-29 05:41:54,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:54,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:41:54,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:54,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:41:54,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:41:54,709 INFO L87 Difference]: Start difference. First operand 5068 states and 8375 transitions. Second operand has 4 states, 4 states have (on average 767.75) internal successors, (3071), 4 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:54,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:54,891 INFO L93 Difference]: Finished difference Result 13387 states and 22101 transitions. [2023-11-29 05:41:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:41:54,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 767.75) internal successors, (3071), 4 states have internal predecessors, (3071), 0 states have call successors, (0), 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 3415 [2023-11-29 05:41:54,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:54,902 INFO L225 Difference]: With dead ends: 13387 [2023-11-29 05:41:54,903 INFO L226 Difference]: Without dead ends: 9057 [2023-11-29 05:41:54,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6829 GetRequests, 6819 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:41:54,907 INFO L413 NwaCegarLoop]: 7937 mSDtfsCounter, 6565 mSDsluCounter, 15001 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6565 SdHoareTripleChecker+Valid, 22938 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:54,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6565 Valid, 22938 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:41:54,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9057 states. [2023-11-29 05:41:54,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9057 to 5073. [2023-11-29 05:41:54,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5073 states, 5072 states have (on average 1.652602523659306) internal successors, (8382), 5072 states have internal predecessors, (8382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:54,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5073 states to 5073 states and 8382 transitions. [2023-11-29 05:41:54,977 INFO L78 Accepts]: Start accepts. Automaton has 5073 states and 8382 transitions. Word has length 3415 [2023-11-29 05:41:54,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:54,979 INFO L495 AbstractCegarLoop]: Abstraction has 5073 states and 8382 transitions. [2023-11-29 05:41:54,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 767.75) internal successors, (3071), 4 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:54,980 INFO L276 IsEmpty]: Start isEmpty. Operand 5073 states and 8382 transitions. [2023-11-29 05:41:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3417 [2023-11-29 05:41:55,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:55,038 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:55,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 05:41:55,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:55,239 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:55,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:55,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1457615247, now seen corresponding path program 1 times [2023-11-29 05:41:55,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:55,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447853553] [2023-11-29 05:41:55,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:55,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:55,539 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:41:55,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462357340] [2023-11-29 05:41:55,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:55,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:55,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:55,541 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:41:55,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 05:41:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:58,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 14740 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:41:59,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 176 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:42:00,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:42:00,535 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-11-29 05:42:00,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:00,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447853553] [2023-11-29 05:42:00,535 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:42:00,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462357340] [2023-11-29 05:42:00,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462357340] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:42:00,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:42:00,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:42:00,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748352675] [2023-11-29 05:42:00,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:00,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:42:00,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:00,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:42:00,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:42:00,542 INFO L87 Difference]: Start difference. First operand 5073 states and 8382 transitions. Second operand has 5 states, 5 states have (on average 615.2) internal successors, (3076), 5 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:00,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:00,872 INFO L93 Difference]: Finished difference Result 17735 states and 29271 transitions. [2023-11-29 05:42:00,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:42:00,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 615.2) internal successors, (3076), 5 states have internal predecessors, (3076), 0 states have call successors, (0), 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 3416 [2023-11-29 05:42:00,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:00,887 INFO L225 Difference]: With dead ends: 17735 [2023-11-29 05:42:00,887 INFO L226 Difference]: Without dead ends: 13394 [2023-11-29 05:42:00,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6833 GetRequests, 6819 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:42:00,892 INFO L413 NwaCegarLoop]: 14636 mSDtfsCounter, 13274 mSDsluCounter, 36326 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13274 SdHoareTripleChecker+Valid, 50962 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:00,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13274 Valid, 50962 Invalid, 44 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:42:00,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13394 states. [2023-11-29 05:42:00,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13394 to 5078. [2023-11-29 05:42:00,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5078 states, 5077 states have (on average 1.6523537522158755) internal successors, (8389), 5077 states have internal predecessors, (8389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 8389 transitions. [2023-11-29 05:42:00,979 INFO L78 Accepts]: Start accepts. Automaton has 5078 states and 8389 transitions. Word has length 3416 [2023-11-29 05:42:00,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:00,981 INFO L495 AbstractCegarLoop]: Abstraction has 5078 states and 8389 transitions. [2023-11-29 05:42:00,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 615.2) internal successors, (3076), 5 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:00,982 INFO L276 IsEmpty]: Start isEmpty. Operand 5078 states and 8389 transitions. [2023-11-29 05:42:01,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3418 [2023-11-29 05:42:01,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:01,040 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:01,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 05:42:01,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2023-11-29 05:42:01,241 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:01,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:01,242 INFO L85 PathProgramCache]: Analyzing trace with hash -621173457, now seen corresponding path program 1 times [2023-11-29 05:42:01,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:01,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114913007] [2023-11-29 05:42:01,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:01,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:01,541 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:42:01,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291516820] [2023-11-29 05:42:01,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:01,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:01,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:01,543 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:01,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 05:42:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:04,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 14744 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:42:05,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:06,122 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 180 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:42:06,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:42:06,184 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-11-29 05:42:06,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:06,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114913007] [2023-11-29 05:42:06,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:42:06,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291516820] [2023-11-29 05:42:06,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291516820] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:42:06,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:42:06,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:42:06,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443035325] [2023-11-29 05:42:06,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:06,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:42:06,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:06,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:42:06,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:42:06,193 INFO L87 Difference]: Start difference. First operand 5078 states and 8389 transitions. Second operand has 4 states, 4 states have (on average 770.25) internal successors, (3081), 4 states have internal predecessors, (3081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:06,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:06,365 INFO L93 Difference]: Finished difference Result 13417 states and 22143 transitions. [2023-11-29 05:42:06,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:42:06,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 770.25) internal successors, (3081), 4 states have internal predecessors, (3081), 0 states have call successors, (0), 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 3417 [2023-11-29 05:42:06,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:06,376 INFO L225 Difference]: With dead ends: 13417 [2023-11-29 05:42:06,376 INFO L226 Difference]: Without dead ends: 9065 [2023-11-29 05:42:06,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6833 GetRequests, 6823 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:42:06,380 INFO L413 NwaCegarLoop]: 7917 mSDtfsCounter, 6559 mSDsluCounter, 14981 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6559 SdHoareTripleChecker+Valid, 22898 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:06,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6559 Valid, 22898 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:42:06,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9065 states. [2023-11-29 05:42:06,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9065 to 5083. [2023-11-29 05:42:06,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5083 states, 5082 states have (on average 1.6521054702872884) internal successors, (8396), 5082 states have internal predecessors, (8396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:06,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5083 states to 5083 states and 8396 transitions. [2023-11-29 05:42:06,451 INFO L78 Accepts]: Start accepts. Automaton has 5083 states and 8396 transitions. Word has length 3417 [2023-11-29 05:42:06,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:06,453 INFO L495 AbstractCegarLoop]: Abstraction has 5083 states and 8396 transitions. [2023-11-29 05:42:06,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 770.25) internal successors, (3081), 4 states have internal predecessors, (3081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:06,454 INFO L276 IsEmpty]: Start isEmpty. Operand 5083 states and 8396 transitions. [2023-11-29 05:42:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3419 [2023-11-29 05:42:06,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:06,512 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:42:06,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 05:42:06,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2023-11-29 05:42:06,713 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:06,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:06,714 INFO L85 PathProgramCache]: Analyzing trace with hash 52001123, now seen corresponding path program 1 times [2023-11-29 05:42:06,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:06,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141979209] [2023-11-29 05:42:06,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:06,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:07,013 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:42:07,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802079913] [2023-11-29 05:42:07,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:07,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:07,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:07,015 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:07,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 05:42:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:10,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 14747 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:42:10,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:11,613 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 184 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:42:11,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:42:11,675 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2023-11-29 05:42:11,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:11,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141979209] [2023-11-29 05:42:11,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:42:11,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802079913] [2023-11-29 05:42:11,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802079913] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:42:11,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:42:11,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:42:11,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127352556] [2023-11-29 05:42:11,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:11,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:42:11,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:11,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:42:11,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:42:11,683 INFO L87 Difference]: Start difference. First operand 5083 states and 8396 transitions. Second operand has 4 states, 4 states have (on average 771.5) internal successors, (3086), 4 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:11,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:11,851 INFO L93 Difference]: Finished difference Result 13432 states and 22164 transitions. [2023-11-29 05:42:11,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:42:11,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 771.5) internal successors, (3086), 4 states have internal predecessors, (3086), 0 states have call successors, (0), 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 3418 [2023-11-29 05:42:11,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:11,862 INFO L225 Difference]: With dead ends: 13432 [2023-11-29 05:42:11,862 INFO L226 Difference]: Without dead ends: 9069 [2023-11-29 05:42:11,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6835 GetRequests, 6825 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:42:11,867 INFO L413 NwaCegarLoop]: 7907 mSDtfsCounter, 6556 mSDsluCounter, 14971 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6556 SdHoareTripleChecker+Valid, 22878 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:11,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6556 Valid, 22878 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:42:11,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9069 states. [2023-11-29 05:42:11,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9069 to 5088. [2023-11-29 05:42:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5088 states, 5087 states have (on average 1.651857676430116) internal successors, (8403), 5087 states have internal predecessors, (8403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:11,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5088 states to 5088 states and 8403 transitions. [2023-11-29 05:42:11,937 INFO L78 Accepts]: Start accepts. Automaton has 5088 states and 8403 transitions. Word has length 3418 [2023-11-29 05:42:11,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:11,941 INFO L495 AbstractCegarLoop]: Abstraction has 5088 states and 8403 transitions. [2023-11-29 05:42:11,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 771.5) internal successors, (3086), 4 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:11,941 INFO L276 IsEmpty]: Start isEmpty. Operand 5088 states and 8403 transitions. [2023-11-29 05:42:11,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3420 [2023-11-29 05:42:11,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:11,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:42:12,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 05:42:12,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2023-11-29 05:42:12,200 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:12,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:12,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1496259527, now seen corresponding path program 1 times [2023-11-29 05:42:12,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:12,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013043752] [2023-11-29 05:42:12,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:12,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:12,498 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:42:12,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124983538] [2023-11-29 05:42:12,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:12,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:12,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:12,500 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:12,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 05:42:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:15,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 14751 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:42:15,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 188 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:42:17,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:42:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2023-11-29 05:42:17,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:17,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013043752] [2023-11-29 05:42:17,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:42:17,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124983538] [2023-11-29 05:42:17,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124983538] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:42:17,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:42:17,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:42:17,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612645305] [2023-11-29 05:42:17,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:17,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:42:17,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:17,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:42:17,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:42:17,309 INFO L87 Difference]: Start difference. First operand 5088 states and 8403 transitions. Second operand has 4 states, 4 states have (on average 772.75) internal successors, (3091), 4 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:17,485 INFO L93 Difference]: Finished difference Result 13447 states and 22185 transitions. [2023-11-29 05:42:17,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:42:17,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 772.75) internal successors, (3091), 4 states have internal predecessors, (3091), 0 states have call successors, (0), 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 3419 [2023-11-29 05:42:17,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:17,497 INFO L225 Difference]: With dead ends: 13447 [2023-11-29 05:42:17,497 INFO L226 Difference]: Without dead ends: 9073 [2023-11-29 05:42:17,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6837 GetRequests, 6827 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:42:17,501 INFO L413 NwaCegarLoop]: 7897 mSDtfsCounter, 6553 mSDsluCounter, 14961 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6553 SdHoareTripleChecker+Valid, 22858 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:17,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6553 Valid, 22858 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:42:17,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9073 states. [2023-11-29 05:42:17,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9073 to 5093. [2023-11-29 05:42:17,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 5092 states have (on average 1.6516103692065986) internal successors, (8410), 5092 states have internal predecessors, (8410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:17,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 8410 transitions. [2023-11-29 05:42:17,572 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 8410 transitions. Word has length 3419 [2023-11-29 05:42:17,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:17,574 INFO L495 AbstractCegarLoop]: Abstraction has 5093 states and 8410 transitions. [2023-11-29 05:42:17,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 772.75) internal successors, (3091), 4 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:17,575 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 8410 transitions. [2023-11-29 05:42:17,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3421 [2023-11-29 05:42:17,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:17,672 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:17,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 05:42:17,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2023-11-29 05:42:17,888 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:17,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:17,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1217269973, now seen corresponding path program 1 times [2023-11-29 05:42:17,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:17,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59406619] [2023-11-29 05:42:17,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:17,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:18,186 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:42:18,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113826328] [2023-11-29 05:42:18,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:18,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:18,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:18,188 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:18,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 05:42:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:21,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 14754 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:42:21,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:22,721 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 192 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:42:22,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:42:22,817 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2023-11-29 05:42:22,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:22,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59406619] [2023-11-29 05:42:22,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:42:22,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113826328] [2023-11-29 05:42:22,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113826328] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:42:22,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:42:22,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:42:22,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064211494] [2023-11-29 05:42:22,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:22,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:42:22,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:22,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:42:22,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:42:22,824 INFO L87 Difference]: Start difference. First operand 5093 states and 8410 transitions. Second operand has 5 states, 5 states have (on average 619.2) internal successors, (3096), 5 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:23,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:23,161 INFO L93 Difference]: Finished difference Result 17839 states and 29423 transitions. [2023-11-29 05:42:23,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:42:23,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 619.2) internal successors, (3096), 5 states have internal predecessors, (3096), 0 states have call successors, (0), 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 3420 [2023-11-29 05:42:23,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:23,177 INFO L225 Difference]: With dead ends: 17839 [2023-11-29 05:42:23,178 INFO L226 Difference]: Without dead ends: 13454 [2023-11-29 05:42:23,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6841 GetRequests, 6827 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:42:23,183 INFO L413 NwaCegarLoop]: 14596 mSDtfsCounter, 13262 mSDsluCounter, 36246 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13262 SdHoareTripleChecker+Valid, 50842 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:23,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13262 Valid, 50842 Invalid, 44 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:42:23,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13454 states. [2023-11-29 05:42:23,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13454 to 5098. [2023-11-29 05:42:23,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5098 states, 5097 states have (on average 1.6513635471846184) internal successors, (8417), 5097 states have internal predecessors, (8417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:23,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5098 states to 5098 states and 8417 transitions. [2023-11-29 05:42:23,270 INFO L78 Accepts]: Start accepts. Automaton has 5098 states and 8417 transitions. Word has length 3420 [2023-11-29 05:42:23,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:23,272 INFO L495 AbstractCegarLoop]: Abstraction has 5098 states and 8417 transitions. [2023-11-29 05:42:23,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.2) internal successors, (3096), 5 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:23,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5098 states and 8417 transitions. [2023-11-29 05:42:23,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3422 [2023-11-29 05:42:23,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:23,331 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 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 05:42:23,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 05:42:23,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2023-11-29 05:42:23,532 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:23,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:23,533 INFO L85 PathProgramCache]: Analyzing trace with hash 655723459, now seen corresponding path program 1 times [2023-11-29 05:42:23,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:23,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295563264] [2023-11-29 05:42:23,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:23,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:23,838 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:42:23,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448559164] [2023-11-29 05:42:23,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:23,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:23,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:23,840 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:23,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 05:42:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 14758 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:42:27,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 196 proven. 326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:42:28,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:42:28,802 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2023-11-29 05:42:28,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:28,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295563264] [2023-11-29 05:42:28,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:42:28,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448559164] [2023-11-29 05:42:28,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448559164] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:42:28,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:42:28,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:42:28,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187002048] [2023-11-29 05:42:28,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:28,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:42:28,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:28,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:42:28,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:42:28,808 INFO L87 Difference]: Start difference. First operand 5098 states and 8417 transitions. Second operand has 4 states, 4 states have (on average 775.25) internal successors, (3101), 4 states have internal predecessors, (3101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:28,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:28,985 INFO L93 Difference]: Finished difference Result 13477 states and 22227 transitions. [2023-11-29 05:42:28,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:42:28,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 775.25) internal successors, (3101), 4 states have internal predecessors, (3101), 0 states have call successors, (0), 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 3421 [2023-11-29 05:42:28,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:28,999 INFO L225 Difference]: With dead ends: 13477 [2023-11-29 05:42:28,999 INFO L226 Difference]: Without dead ends: 9081 [2023-11-29 05:42:29,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6841 GetRequests, 6831 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:42:29,004 INFO L413 NwaCegarLoop]: 7877 mSDtfsCounter, 6547 mSDsluCounter, 14941 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6547 SdHoareTripleChecker+Valid, 22818 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:29,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6547 Valid, 22818 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:42:29,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9081 states. [2023-11-29 05:42:29,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9081 to 5103. [2023-11-29 05:42:29,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5103 states, 5102 states have (on average 1.6511172089376716) internal successors, (8424), 5102 states have internal predecessors, (8424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:29,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5103 states to 5103 states and 8424 transitions. [2023-11-29 05:42:29,077 INFO L78 Accepts]: Start accepts. Automaton has 5103 states and 8424 transitions. Word has length 3421 [2023-11-29 05:42:29,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:29,079 INFO L495 AbstractCegarLoop]: Abstraction has 5103 states and 8424 transitions. [2023-11-29 05:42:29,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 775.25) internal successors, (3101), 4 states have internal predecessors, (3101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:29,080 INFO L276 IsEmpty]: Start isEmpty. Operand 5103 states and 8424 transitions. [2023-11-29 05:42:29,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3423 [2023-11-29 05:42:29,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:29,137 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:29,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 05:42:29,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-11-29 05:42:29,338 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:29,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:29,339 INFO L85 PathProgramCache]: Analyzing trace with hash -869403449, now seen corresponding path program 1 times [2023-11-29 05:42:29,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:29,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035842730] [2023-11-29 05:42:29,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:29,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:29,696 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:42:29,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42374942] [2023-11-29 05:42:29,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:29,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:29,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:29,699 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:29,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 05:42:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:33,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 14761 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:42:33,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:34,232 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 200 proven. 322 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:42:34,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:42:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-29 05:42:34,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:34,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035842730] [2023-11-29 05:42:34,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:42:34,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42374942] [2023-11-29 05:42:34,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42374942] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:42:34,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:42:34,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:42:34,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133136379] [2023-11-29 05:42:34,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:34,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:42:34,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:34,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:42:34,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:42:34,313 INFO L87 Difference]: Start difference. First operand 5103 states and 8424 transitions. Second operand has 4 states, 4 states have (on average 776.5) internal successors, (3106), 4 states have internal predecessors, (3106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:34,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:34,496 INFO L93 Difference]: Finished difference Result 13492 states and 22248 transitions. [2023-11-29 05:42:34,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:42:34,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 776.5) internal successors, (3106), 4 states have internal predecessors, (3106), 0 states have call successors, (0), 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 3422 [2023-11-29 05:42:34,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:34,508 INFO L225 Difference]: With dead ends: 13492 [2023-11-29 05:42:34,509 INFO L226 Difference]: Without dead ends: 9085 [2023-11-29 05:42:34,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6843 GetRequests, 6833 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:42:34,513 INFO L413 NwaCegarLoop]: 7867 mSDtfsCounter, 6544 mSDsluCounter, 14931 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6544 SdHoareTripleChecker+Valid, 22798 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:34,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6544 Valid, 22798 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:42:34,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9085 states. [2023-11-29 05:42:34,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9085 to 5108. [2023-11-29 05:42:34,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5108 states, 5107 states have (on average 1.6508713530448405) internal successors, (8431), 5107 states have internal predecessors, (8431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:34,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5108 states to 5108 states and 8431 transitions. [2023-11-29 05:42:34,602 INFO L78 Accepts]: Start accepts. Automaton has 5108 states and 8431 transitions. Word has length 3422 [2023-11-29 05:42:34,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:34,604 INFO L495 AbstractCegarLoop]: Abstraction has 5108 states and 8431 transitions. [2023-11-29 05:42:34,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 776.5) internal successors, (3106), 4 states have internal predecessors, (3106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:34,605 INFO L276 IsEmpty]: Start isEmpty. Operand 5108 states and 8431 transitions. [2023-11-29 05:42:34,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3424 [2023-11-29 05:42:34,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:34,661 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:34,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 05:42:34,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2023-11-29 05:42:34,862 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:34,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:34,863 INFO L85 PathProgramCache]: Analyzing trace with hash -957891635, now seen corresponding path program 1 times [2023-11-29 05:42:34,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:34,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120422746] [2023-11-29 05:42:34,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:34,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:35,153 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:42:35,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687275045] [2023-11-29 05:42:35,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:35,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:35,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:35,155 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:35,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 05:42:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:38,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 14765 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:42:38,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:39,718 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 204 proven. 318 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:42:39,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:42:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-11-29 05:42:39,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:39,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120422746] [2023-11-29 05:42:39,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:42:39,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687275045] [2023-11-29 05:42:39,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687275045] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:42:39,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:42:39,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:42:39,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286759709] [2023-11-29 05:42:39,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:39,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:42:39,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:39,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:42:39,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:42:39,793 INFO L87 Difference]: Start difference. First operand 5108 states and 8431 transitions. Second operand has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:40,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:40,006 INFO L93 Difference]: Finished difference Result 13504 states and 22264 transitions. [2023-11-29 05:42:40,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:42:40,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 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 3423 [2023-11-29 05:42:40,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:40,017 INFO L225 Difference]: With dead ends: 13504 [2023-11-29 05:42:40,017 INFO L226 Difference]: Without dead ends: 9086 [2023-11-29 05:42:40,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6845 GetRequests, 6835 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:42:40,021 INFO L413 NwaCegarLoop]: 7862 mSDtfsCounter, 6543 mSDsluCounter, 14926 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6543 SdHoareTripleChecker+Valid, 22788 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:40,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6543 Valid, 22788 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:42:40,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9086 states. [2023-11-29 05:42:40,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9086 to 5110. [2023-11-29 05:42:40,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5110 states, 5109 states have (on average 1.6506165590135056) internal successors, (8433), 5109 states have internal predecessors, (8433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:40,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5110 states to 5110 states and 8433 transitions. [2023-11-29 05:42:40,098 INFO L78 Accepts]: Start accepts. Automaton has 5110 states and 8433 transitions. Word has length 3423 [2023-11-29 05:42:40,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:40,100 INFO L495 AbstractCegarLoop]: Abstraction has 5110 states and 8433 transitions. [2023-11-29 05:42:40,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 777.25) internal successors, (3109), 4 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:40,101 INFO L276 IsEmpty]: Start isEmpty. Operand 5110 states and 8433 transitions. [2023-11-29 05:42:40,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3425 [2023-11-29 05:42:40,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:40,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 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 05:42:40,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-29 05:42:40,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-11-29 05:42:40,358 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:40,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:40,359 INFO L85 PathProgramCache]: Analyzing trace with hash 892305055, now seen corresponding path program 1 times [2023-11-29 05:42:40,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:40,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215779981] [2023-11-29 05:42:40,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:40,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:40,653 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:42:40,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087807983] [2023-11-29 05:42:40,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:40,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:40,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:40,655 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:40,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 05:42:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:43,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 14768 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:42:44,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 206 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:42:45,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:42:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-29 05:42:45,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:45,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215779981] [2023-11-29 05:42:45,291 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:42:45,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087807983] [2023-11-29 05:42:45,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087807983] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:42:45,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:42:45,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:42:45,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195662836] [2023-11-29 05:42:45,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:45,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:42:45,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:45,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:42:45,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:42:45,297 INFO L87 Difference]: Start difference. First operand 5110 states and 8433 transitions. Second operand has 4 states, 4 states have (on average 778.5) internal successors, (3114), 4 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:45,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:45,467 INFO L93 Difference]: Finished difference Result 13513 states and 22275 transitions. [2023-11-29 05:42:45,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:42:45,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 778.5) internal successors, (3114), 4 states have internal predecessors, (3114), 0 states have call successors, (0), 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 3424 [2023-11-29 05:42:45,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:45,479 INFO L225 Difference]: With dead ends: 13513 [2023-11-29 05:42:45,479 INFO L226 Difference]: Without dead ends: 9090 [2023-11-29 05:42:45,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6847 GetRequests, 6837 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:42:45,483 INFO L413 NwaCegarLoop]: 7852 mSDtfsCounter, 6538 mSDsluCounter, 14916 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6538 SdHoareTripleChecker+Valid, 22768 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:45,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6538 Valid, 22768 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:42:45,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9090 states. [2023-11-29 05:42:45,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9090 to 5115. [2023-11-29 05:42:45,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 1.650371529135706) internal successors, (8440), 5114 states have internal predecessors, (8440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 8440 transitions. [2023-11-29 05:42:45,555 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 8440 transitions. Word has length 3424 [2023-11-29 05:42:45,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:45,557 INFO L495 AbstractCegarLoop]: Abstraction has 5115 states and 8440 transitions. [2023-11-29 05:42:45,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 778.5) internal successors, (3114), 4 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:45,558 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 8440 transitions. [2023-11-29 05:42:45,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3426 [2023-11-29 05:42:45,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:45,615 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:45,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-29 05:42:45,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2023-11-29 05:42:45,816 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:45,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:45,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2134547929, now seen corresponding path program 1 times [2023-11-29 05:42:45,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:45,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802965916] [2023-11-29 05:42:45,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:45,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:46,138 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:42:46,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [498484757] [2023-11-29 05:42:46,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:46,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:46,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:46,140 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:46,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 05:42:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:49,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 14771 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:42:49,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 210 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:42:50,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:42:50,577 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2023-11-29 05:42:50,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:50,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802965916] [2023-11-29 05:42:50,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:42:50,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498484757] [2023-11-29 05:42:50,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498484757] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:42:50,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:42:50,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:42:50,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811384542] [2023-11-29 05:42:50,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:50,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:42:50,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:50,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:42:50,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:42:50,584 INFO L87 Difference]: Start difference. First operand 5115 states and 8440 transitions. Second operand has 5 states, 5 states have (on average 623.8) internal successors, (3119), 5 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:50,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:50,907 INFO L93 Difference]: Finished difference Result 17954 states and 29588 transitions. [2023-11-29 05:42:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:42:50,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 623.8) internal successors, (3119), 5 states have internal predecessors, (3119), 0 states have call successors, (0), 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 3425 [2023-11-29 05:42:50,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:50,922 INFO L225 Difference]: With dead ends: 17954 [2023-11-29 05:42:50,922 INFO L226 Difference]: Without dead ends: 13520 [2023-11-29 05:42:50,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6851 GetRequests, 6837 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:42:50,927 INFO L413 NwaCegarLoop]: 14551 mSDtfsCounter, 13247 mSDsluCounter, 36156 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13247 SdHoareTripleChecker+Valid, 50707 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:50,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13247 Valid, 50707 Invalid, 44 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:42:50,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13520 states. [2023-11-29 05:42:51,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13520 to 5120. [2023-11-29 05:42:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5120 states, 5119 states have (on average 1.650126977925376) internal successors, (8447), 5119 states have internal predecessors, (8447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:51,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5120 states to 5120 states and 8447 transitions. [2023-11-29 05:42:51,017 INFO L78 Accepts]: Start accepts. Automaton has 5120 states and 8447 transitions. Word has length 3425 [2023-11-29 05:42:51,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:51,019 INFO L495 AbstractCegarLoop]: Abstraction has 5120 states and 8447 transitions. [2023-11-29 05:42:51,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 623.8) internal successors, (3119), 5 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:51,020 INFO L276 IsEmpty]: Start isEmpty. Operand 5120 states and 8447 transitions. [2023-11-29 05:42:51,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3427 [2023-11-29 05:42:51,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:51,076 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:51,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 05:42:51,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2023-11-29 05:42:51,276 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:51,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:51,277 INFO L85 PathProgramCache]: Analyzing trace with hash -908993133, now seen corresponding path program 1 times [2023-11-29 05:42:51,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:51,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668756302] [2023-11-29 05:42:51,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:51,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:51,574 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:42:51,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157607430] [2023-11-29 05:42:51,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:51,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:51,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:51,576 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:51,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 05:42:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:54,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 14774 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:42:54,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:56,120 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 214 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:42:56,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:42:56,270 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-11-29 05:42:56,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:56,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668756302] [2023-11-29 05:42:56,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:42:56,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157607430] [2023-11-29 05:42:56,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157607430] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:42:56,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:42:56,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:42:56,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408624022] [2023-11-29 05:42:56,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:56,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:42:56,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:56,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:42:56,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:42:56,280 INFO L87 Difference]: Start difference. First operand 5120 states and 8447 transitions. Second operand has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:56,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:56,463 INFO L93 Difference]: Finished difference Result 13543 states and 22317 transitions. [2023-11-29 05:42:56,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:42:56,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 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 3426 [2023-11-29 05:42:56,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:56,475 INFO L225 Difference]: With dead ends: 13543 [2023-11-29 05:42:56,475 INFO L226 Difference]: Without dead ends: 9098 [2023-11-29 05:42:56,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6851 GetRequests, 6841 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:42:56,479 INFO L413 NwaCegarLoop]: 7832 mSDtfsCounter, 6532 mSDsluCounter, 14896 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6532 SdHoareTripleChecker+Valid, 22728 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:56,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6532 Valid, 22728 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:42:56,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9098 states. [2023-11-29 05:42:56,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9098 to 5125. [2023-11-29 05:42:56,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5124 states have (on average 1.6498829039812646) internal successors, (8454), 5124 states have internal predecessors, (8454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:56,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 8454 transitions. [2023-11-29 05:42:56,561 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 8454 transitions. Word has length 3426 [2023-11-29 05:42:56,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:56,563 INFO L495 AbstractCegarLoop]: Abstraction has 5125 states and 8454 transitions. [2023-11-29 05:42:56,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:56,564 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 8454 transitions. [2023-11-29 05:42:56,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3428 [2023-11-29 05:42:56,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:56,622 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:56,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 05:42:56,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:56,823 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:56,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:56,823 INFO L85 PathProgramCache]: Analyzing trace with hash 427740645, now seen corresponding path program 1 times [2023-11-29 05:42:56,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:56,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699897122] [2023-11-29 05:42:56,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:56,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:57,120 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:42:57,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480839004] [2023-11-29 05:42:57,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:57,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:57,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:57,122 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:57,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 05:43:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:00,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 14777 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:43:00,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:43:01,438 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 218 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:43:01,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:43:01,499 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-11-29 05:43:01,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:01,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699897122] [2023-11-29 05:43:01,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:43:01,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480839004] [2023-11-29 05:43:01,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480839004] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:43:01,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:43:01,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:43:01,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982336790] [2023-11-29 05:43:01,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:01,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:43:01,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:01,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:43:01,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:43:01,506 INFO L87 Difference]: Start difference. First operand 5125 states and 8454 transitions. Second operand has 4 states, 4 states have (on average 782.25) internal successors, (3129), 4 states have internal predecessors, (3129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:01,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:43:01,681 INFO L93 Difference]: Finished difference Result 13558 states and 22338 transitions. [2023-11-29 05:43:01,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:43:01,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 782.25) internal successors, (3129), 4 states have internal predecessors, (3129), 0 states have call successors, (0), 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 3427 [2023-11-29 05:43:01,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:43:01,692 INFO L225 Difference]: With dead ends: 13558 [2023-11-29 05:43:01,692 INFO L226 Difference]: Without dead ends: 9102 [2023-11-29 05:43:01,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6853 GetRequests, 6843 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:43:01,696 INFO L413 NwaCegarLoop]: 7822 mSDtfsCounter, 6529 mSDsluCounter, 14886 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6529 SdHoareTripleChecker+Valid, 22708 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:43:01,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6529 Valid, 22708 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:43:01,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9102 states. [2023-11-29 05:43:01,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9102 to 5130. [2023-11-29 05:43:01,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5130 states, 5129 states have (on average 1.6496393059075842) internal successors, (8461), 5129 states have internal predecessors, (8461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5130 states to 5130 states and 8461 transitions. [2023-11-29 05:43:01,768 INFO L78 Accepts]: Start accepts. Automaton has 5130 states and 8461 transitions. Word has length 3427 [2023-11-29 05:43:01,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:43:01,769 INFO L495 AbstractCegarLoop]: Abstraction has 5130 states and 8461 transitions. [2023-11-29 05:43:01,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 782.25) internal successors, (3129), 4 states have internal predecessors, (3129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:01,770 INFO L276 IsEmpty]: Start isEmpty. Operand 5130 states and 8461 transitions. [2023-11-29 05:43:01,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3429 [2023-11-29 05:43:01,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:43:01,828 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] WARNING: YOUR LOGFILE WAS TOO LONG, SOME LINES IN THE MIDDLE WERE REMOVED. [2023-11-29 05:43:23,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 05:43:24,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:24,065 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:43:24,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:24,065 INFO L85 PathProgramCache]: Analyzing trace with hash 653682287, now seen corresponding path program 1 times [2023-11-29 05:43:24,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:24,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66033704] [2023-11-29 05:43:24,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:24,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:24,361 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:43:24,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480593761] [2023-11-29 05:43:24,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:24,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:24,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:43:24,362 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:43:24,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 05:43:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:27,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 14792 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:43:27,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:43:29,008 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 238 proven. 284 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:43:29,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:43:29,071 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-29 05:43:29,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:29,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66033704] [2023-11-29 05:43:29,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:43:29,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480593761] [2023-11-29 05:43:29,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480593761] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:43:29,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:43:29,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:43:29,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479324344] [2023-11-29 05:43:29,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:29,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:43:29,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:29,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:43:29,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:43:29,078 INFO L87 Difference]: Start difference. First operand 5150 states and 8489 transitions. Second operand has 4 states, 4 states have (on average 788.5) internal successors, (3154), 4 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:29,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:43:29,249 INFO L93 Difference]: Finished difference Result 13633 states and 22443 transitions. [2023-11-29 05:43:29,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:43:29,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 788.5) internal successors, (3154), 4 states have internal predecessors, (3154), 0 states have call successors, (0), 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 3432 [2023-11-29 05:43:29,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:43:29,260 INFO L225 Difference]: With dead ends: 13633 [2023-11-29 05:43:29,260 INFO L226 Difference]: Without dead ends: 9122 [2023-11-29 05:43:29,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6863 GetRequests, 6853 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:43:29,264 INFO L413 NwaCegarLoop]: 7772 mSDtfsCounter, 6514 mSDsluCounter, 14836 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6514 SdHoareTripleChecker+Valid, 22608 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:43:29,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6514 Valid, 22608 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:43:29,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9122 states. [2023-11-29 05:43:29,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9122 to 5155. [2023-11-29 05:43:29,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 1.648428405122235) internal successors, (8496), 5154 states have internal predecessors, (8496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:29,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 8496 transitions. [2023-11-29 05:43:29,337 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 8496 transitions. Word has length 3432 [2023-11-29 05:43:29,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:43:29,339 INFO L495 AbstractCegarLoop]: Abstraction has 5155 states and 8496 transitions. [2023-11-29 05:43:29,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 788.5) internal successors, (3154), 4 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:29,339 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 8496 transitions. [2023-11-29 05:43:29,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3434 [2023-11-29 05:43:29,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:43:29,397 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:29,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 05:43:29,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2023-11-29 05:43:29,598 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:43:29,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:29,599 INFO L85 PathProgramCache]: Analyzing trace with hash 2118889993, now seen corresponding path program 1 times [2023-11-29 05:43:29,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:29,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145291236] [2023-11-29 05:43:29,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:29,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:29,896 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:43:29,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759260311] [2023-11-29 05:43:29,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:29,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:29,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:43:29,898 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:43:29,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 05:43:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:33,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 14795 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:43:33,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:43:34,664 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 242 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:43:34,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:43:34,739 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-29 05:43:34,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:34,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145291236] [2023-11-29 05:43:34,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:43:34,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759260311] [2023-11-29 05:43:34,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759260311] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:43:34,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:43:34,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:43:34,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255635636] [2023-11-29 05:43:34,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:34,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:43:34,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:34,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:43:34,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:43:34,746 INFO L87 Difference]: Start difference. First operand 5155 states and 8496 transitions. Second operand has 5 states, 5 states have (on average 631.8) internal successors, (3159), 5 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:35,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:43:35,080 INFO L93 Difference]: Finished difference Result 18162 states and 29892 transitions. [2023-11-29 05:43:35,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:43:35,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 631.8) internal successors, (3159), 5 states have internal predecessors, (3159), 0 states have call successors, (0), 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 3433 [2023-11-29 05:43:35,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:43:35,095 INFO L225 Difference]: With dead ends: 18162 [2023-11-29 05:43:35,095 INFO L226 Difference]: Without dead ends: 13640 [2023-11-29 05:43:35,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6867 GetRequests, 6853 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:43:35,101 INFO L413 NwaCegarLoop]: 14471 mSDtfsCounter, 13223 mSDsluCounter, 35996 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13223 SdHoareTripleChecker+Valid, 50467 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:43:35,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13223 Valid, 50467 Invalid, 44 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:43:35,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13640 states. [2023-11-29 05:43:35,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13640 to 5160. [2023-11-29 05:43:35,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5160 states, 5159 states have (on average 1.64818763326226) internal successors, (8503), 5159 states have internal predecessors, (8503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:35,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5160 states to 5160 states and 8503 transitions. [2023-11-29 05:43:35,191 INFO L78 Accepts]: Start accepts. Automaton has 5160 states and 8503 transitions. Word has length 3433 [2023-11-29 05:43:35,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:43:35,193 INFO L495 AbstractCegarLoop]: Abstraction has 5160 states and 8503 transitions. [2023-11-29 05:43:35,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 631.8) internal successors, (3159), 5 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:35,193 INFO L276 IsEmpty]: Start isEmpty. Operand 5160 states and 8503 transitions. [2023-11-29 05:43:35,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3435 [2023-11-29 05:43:35,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:43:35,252 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:35,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-29 05:43:35,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:35,453 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:43:35,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:35,454 INFO L85 PathProgramCache]: Analyzing trace with hash 595168611, now seen corresponding path program 1 times [2023-11-29 05:43:35,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:35,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102494802] [2023-11-29 05:43:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:35,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:35,750 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:43:35,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852577698] [2023-11-29 05:43:35,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:35,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:35,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:43:35,752 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:43:35,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 05:43:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:39,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 14798 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:43:39,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:43:40,461 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 246 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:43:40,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:43:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-11-29 05:43:40,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:40,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102494802] [2023-11-29 05:43:40,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:43:40,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852577698] [2023-11-29 05:43:40,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852577698] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:43:40,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:43:40,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:43:40,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332325153] [2023-11-29 05:43:40,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:40,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:43:40,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:40,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:43:40,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:43:40,529 INFO L87 Difference]: Start difference. First operand 5160 states and 8503 transitions. Second operand has 4 states, 4 states have (on average 790.75) internal successors, (3163), 4 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:40,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:43:40,700 INFO L93 Difference]: Finished difference Result 13663 states and 22484 transitions. [2023-11-29 05:43:40,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:43:40,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 790.75) internal successors, (3163), 4 states have internal predecessors, (3163), 0 states have call successors, (0), 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 3434 [2023-11-29 05:43:40,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:43:40,711 INFO L225 Difference]: With dead ends: 13663 [2023-11-29 05:43:40,711 INFO L226 Difference]: Without dead ends: 9130 [2023-11-29 05:43:40,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6867 GetRequests, 6857 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:43:40,715 INFO L413 NwaCegarLoop]: 7753 mSDtfsCounter, 6508 mSDsluCounter, 14817 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6508 SdHoareTripleChecker+Valid, 22570 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:43:40,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6508 Valid, 22570 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:43:40,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9130 states. [2023-11-29 05:43:40,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9130 to 5167. [2023-11-29 05:43:40,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:43:40,788 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3434 [2023-11-29 05:43:40,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:43:40,790 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:43:40,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 790.75) internal successors, (3163), 4 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:40,791 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:43:40,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3436 [2023-11-29 05:43:40,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:43:40,849 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:40,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-29 05:43:41,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:41,049 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:43:41,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:41,050 INFO L85 PathProgramCache]: Analyzing trace with hash -127034859, now seen corresponding path program 1 times [2023-11-29 05:43:41,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:41,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470944423] [2023-11-29 05:43:41,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:41,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:41,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:43:41,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069245678] [2023-11-29 05:43:41,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:41,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:41,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:43:41,347 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:43:41,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 05:43:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:44,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 14801 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:43:44,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:43:45,888 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 246 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:43:45,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:43:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-11-29 05:43:45,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470944423] [2023-11-29 05:43:45,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:43:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069245678] [2023-11-29 05:43:45,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069245678] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:43:45,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:43:45,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:43:45,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731513622] [2023-11-29 05:43:45,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:45,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:43:45,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:45,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:43:45,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:43:45,969 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 632.6) internal successors, (3163), 5 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:46,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:43:46,323 INFO L93 Difference]: Finished difference Result 17993 states and 29601 transitions. [2023-11-29 05:43:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:43:46,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 632.6) internal successors, (3163), 5 states have internal predecessors, (3163), 0 states have call successors, (0), 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 3435 [2023-11-29 05:43:46,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:43:46,338 INFO L225 Difference]: With dead ends: 17993 [2023-11-29 05:43:46,338 INFO L226 Difference]: Without dead ends: 13654 [2023-11-29 05:43:46,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6868 GetRequests, 6857 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:43:46,343 INFO L413 NwaCegarLoop]: 20291 mSDtfsCounter, 13215 mSDsluCounter, 47631 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13215 SdHoareTripleChecker+Valid, 67922 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:43:46,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13215 Valid, 67922 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:43:46,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13654 states. [2023-11-29 05:43:46,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13654 to 5167. [2023-11-29 05:43:46,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:46,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:43:46,435 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3435 [2023-11-29 05:43:46,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:43:46,437 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:43:46,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 632.6) internal successors, (3163), 5 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:46,438 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:43:46,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3437 [2023-11-29 05:43:46,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:43:46,496 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:46,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-29 05:43:46,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:46,697 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:43:46,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:46,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1475052035, now seen corresponding path program 1 times [2023-11-29 05:43:46,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:46,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202983419] [2023-11-29 05:43:46,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:46,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:46,993 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:43:46,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564601552] [2023-11-29 05:43:46,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:46,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:46,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:43:46,995 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:43:46,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-29 05:43:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:50,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 14804 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:43:50,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:43:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 242 proven. 281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:43:51,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:43:51,722 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2023-11-29 05:43:51,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:51,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202983419] [2023-11-29 05:43:51,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:43:51,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564601552] [2023-11-29 05:43:51,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564601552] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:43:51,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:43:51,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:43:51,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712162502] [2023-11-29 05:43:51,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:51,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:43:51,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:51,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:43:51,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:43:51,729 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 632.0) internal successors, (3160), 5 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:52,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:43:52,075 INFO L93 Difference]: Finished difference Result 18188 states and 29926 transitions. [2023-11-29 05:43:52,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:43:52,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 632.0) internal successors, (3160), 5 states have internal predecessors, (3160), 0 states have call successors, (0), 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 3436 [2023-11-29 05:43:52,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:43:52,089 INFO L225 Difference]: With dead ends: 18188 [2023-11-29 05:43:52,089 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:43:52,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6870 GetRequests, 6859 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:43:52,093 INFO L413 NwaCegarLoop]: 14474 mSDtfsCounter, 13218 mSDsluCounter, 36000 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13218 SdHoareTripleChecker+Valid, 50474 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:43:52,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13218 Valid, 50474 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:43:52,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:43:52,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:43:52,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:52,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:43:52,179 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3436 [2023-11-29 05:43:52,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:43:52,181 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:43:52,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 632.0) internal successors, (3160), 5 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:52,182 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:43:52,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3438 [2023-11-29 05:43:52,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:43:52,240 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:52,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-29 05:43:52,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:52,441 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:43:52,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:52,441 INFO L85 PathProgramCache]: Analyzing trace with hash -145552169, now seen corresponding path program 1 times [2023-11-29 05:43:52,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:52,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864285384] [2023-11-29 05:43:52,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:52,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:52,724 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:43:52,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342090905] [2023-11-29 05:43:52,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:52,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:52,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:43:52,726 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:43:52,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-29 05:43:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:56,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 14808 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:43:56,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:43:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 238 proven. 285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:43:57,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:43:57,139 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2023-11-29 05:43:57,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:57,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864285384] [2023-11-29 05:43:57,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:43:57,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342090905] [2023-11-29 05:43:57,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342090905] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:43:57,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:43:57,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:43:57,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212034813] [2023-11-29 05:43:57,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:57,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:43:57,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:57,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:43:57,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:43:57,147 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 631.8) internal successors, (3159), 5 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:57,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:43:57,447 INFO L93 Difference]: Finished difference Result 18182 states and 29916 transitions. [2023-11-29 05:43:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:43:57,448 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 631.8) internal successors, (3159), 5 states have internal predecessors, (3159), 0 states have call successors, (0), 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 3437 [2023-11-29 05:43:57,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:43:57,462 INFO L225 Difference]: With dead ends: 18182 [2023-11-29 05:43:57,462 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:43:57,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6872 GetRequests, 6861 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:43:57,467 INFO L413 NwaCegarLoop]: 14484 mSDtfsCounter, 13221 mSDsluCounter, 36020 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13221 SdHoareTripleChecker+Valid, 50504 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:43:57,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13221 Valid, 50504 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:43:57,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:43:57,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:43:57,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:57,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:43:57,558 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3437 [2023-11-29 05:43:57,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:43:57,560 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:43:57,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 631.8) internal successors, (3159), 5 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:57,561 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:43:57,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3439 [2023-11-29 05:43:57,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:43:57,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:57,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-11-29 05:43:57,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:57,820 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:43:57,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:57,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1719698565, now seen corresponding path program 1 times [2023-11-29 05:43:57,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:57,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835553967] [2023-11-29 05:43:57,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:57,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:58,119 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:43:58,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191473695] [2023-11-29 05:43:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:58,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:58,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:43:58,121 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:43:58,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-29 05:44:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:01,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 14811 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:44:01,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:44:02,606 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 234 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:44:02,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:44:02,689 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2023-11-29 05:44:02,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:02,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835553967] [2023-11-29 05:44:02,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:44:02,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191473695] [2023-11-29 05:44:02,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191473695] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:44:02,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:44:02,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:44:02,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558055931] [2023-11-29 05:44:02,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:02,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:44:02,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:02,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:44:02,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:44:02,695 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 631.6) internal successors, (3158), 5 states have internal predecessors, (3158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:02,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:02,992 INFO L93 Difference]: Finished difference Result 18176 states and 29906 transitions. [2023-11-29 05:44:02,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:44:02,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 631.6) internal successors, (3158), 5 states have internal predecessors, (3158), 0 states have call successors, (0), 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 3438 [2023-11-29 05:44:02,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:03,009 INFO L225 Difference]: With dead ends: 18176 [2023-11-29 05:44:03,009 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:44:03,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6874 GetRequests, 6863 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:44:03,014 INFO L413 NwaCegarLoop]: 14494 mSDtfsCounter, 13224 mSDsluCounter, 36040 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13224 SdHoareTripleChecker+Valid, 50534 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:03,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13224 Valid, 50534 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:44:03,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:44:03,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:44:03,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:03,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:44:03,105 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3438 [2023-11-29 05:44:03,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:03,106 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:44:03,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 631.6) internal successors, (3158), 5 states have internal predecessors, (3158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:03,107 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:44:03,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3440 [2023-11-29 05:44:03,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:03,166 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:03,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-11-29 05:44:03,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:03,366 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:03,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:03,367 INFO L85 PathProgramCache]: Analyzing trace with hash 873185689, now seen corresponding path program 1 times [2023-11-29 05:44:03,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:03,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140161326] [2023-11-29 05:44:03,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:03,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:03,662 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:44:03,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254147897] [2023-11-29 05:44:03,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:03,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:03,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:44:03,664 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:44:03,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-29 05:44:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:07,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 14815 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:44:07,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:44:08,361 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 230 proven. 293 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:44:08,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:44:08,445 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-29 05:44:08,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:08,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140161326] [2023-11-29 05:44:08,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:44:08,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254147897] [2023-11-29 05:44:08,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254147897] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:44:08,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:44:08,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:44:08,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394494310] [2023-11-29 05:44:08,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:08,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:44:08,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:08,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:44:08,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:44:08,452 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 631.4) internal successors, (3157), 5 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:08,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:08,752 INFO L93 Difference]: Finished difference Result 18170 states and 29896 transitions. [2023-11-29 05:44:08,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:44:08,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 631.4) internal successors, (3157), 5 states have internal predecessors, (3157), 0 states have call successors, (0), 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 3439 [2023-11-29 05:44:08,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:08,767 INFO L225 Difference]: With dead ends: 18170 [2023-11-29 05:44:08,767 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:44:08,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6876 GetRequests, 6865 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:44:08,772 INFO L413 NwaCegarLoop]: 14504 mSDtfsCounter, 13227 mSDsluCounter, 36060 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13227 SdHoareTripleChecker+Valid, 50564 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:08,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13227 Valid, 50564 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:44:08,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:44:08,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:44:08,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:44:08,867 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3439 [2023-11-29 05:44:08,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:08,869 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:44:08,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 631.4) internal successors, (3157), 5 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:08,870 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:44:08,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3441 [2023-11-29 05:44:08,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:08,969 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:09,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-11-29 05:44:09,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:09,170 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:09,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:09,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1363314951, now seen corresponding path program 1 times [2023-11-29 05:44:09,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:09,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961883437] [2023-11-29 05:44:09,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:09,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:09,485 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:44:09,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149141218] [2023-11-29 05:44:09,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:09,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:09,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:44:09,487 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:44:09,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-29 05:44:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:12,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 14818 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:44:12,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:44:13,797 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 226 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:44:13,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:44:13,866 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2023-11-29 05:44:13,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:13,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961883437] [2023-11-29 05:44:13,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:44:13,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149141218] [2023-11-29 05:44:13,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149141218] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:44:13,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:44:13,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:44:13,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26693503] [2023-11-29 05:44:13,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:13,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:44:13,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:13,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:44:13,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:44:13,874 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 4 states, 4 states have (on average 789.0) internal successors, (3156), 4 states have internal predecessors, (3156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:14,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:14,046 INFO L93 Difference]: Finished difference Result 13671 states and 22493 transitions. [2023-11-29 05:44:14,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:44:14,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 789.0) internal successors, (3156), 4 states have internal predecessors, (3156), 0 states have call successors, (0), 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 3440 [2023-11-29 05:44:14,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:14,057 INFO L225 Difference]: With dead ends: 13671 [2023-11-29 05:44:14,057 INFO L226 Difference]: Without dead ends: 9163 [2023-11-29 05:44:14,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6878 GetRequests, 6869 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:44:14,061 INFO L413 NwaCegarLoop]: 7803 mSDtfsCounter, 6520 mSDsluCounter, 14865 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6520 SdHoareTripleChecker+Valid, 22668 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:14,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6520 Valid, 22668 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:44:14,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9163 states. [2023-11-29 05:44:14,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9163 to 5167. [2023-11-29 05:44:14,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:14,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:44:14,136 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3440 [2023-11-29 05:44:14,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:14,138 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:44:14,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 789.0) internal successors, (3156), 4 states have internal predecessors, (3156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:14,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:44:14,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3442 [2023-11-29 05:44:14,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:14,197 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:14,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-11-29 05:44:14,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:14,398 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:14,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:14,398 INFO L85 PathProgramCache]: Analyzing trace with hash -109422501, now seen corresponding path program 1 times [2023-11-29 05:44:14,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:14,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922768972] [2023-11-29 05:44:14,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:14,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:14,694 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:44:14,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049374994] [2023-11-29 05:44:14,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:14,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:14,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:44:14,696 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:44:14,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-29 05:44:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:18,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 14822 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:44:18,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:44:19,515 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 222 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:44:19,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:44:19,606 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2023-11-29 05:44:19,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:19,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922768972] [2023-11-29 05:44:19,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:44:19,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049374994] [2023-11-29 05:44:19,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049374994] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:44:19,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:44:19,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:44:19,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243978197] [2023-11-29 05:44:19,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:19,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:44:19,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:19,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:44:19,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:44:19,613 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 631.0) internal successors, (3155), 5 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:19,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:19,922 INFO L93 Difference]: Finished difference Result 18158 states and 29876 transitions. [2023-11-29 05:44:19,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:44:19,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 631.0) internal successors, (3155), 5 states have internal predecessors, (3155), 0 states have call successors, (0), 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 3441 [2023-11-29 05:44:19,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:19,937 INFO L225 Difference]: With dead ends: 18158 [2023-11-29 05:44:19,937 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:44:19,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6880 GetRequests, 6869 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:44:19,944 INFO L413 NwaCegarLoop]: 14524 mSDtfsCounter, 13233 mSDsluCounter, 36100 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13233 SdHoareTripleChecker+Valid, 50624 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:19,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13233 Valid, 50624 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:44:19,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:44:20,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:44:20,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:44:20,036 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3441 [2023-11-29 05:44:20,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:20,038 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:44:20,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 631.0) internal successors, (3155), 5 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:20,039 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:44:20,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3443 [2023-11-29 05:44:20,097 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:20,097 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:20,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-11-29 05:44:20,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2023-11-29 05:44:20,298 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:20,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:20,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1321193591, now seen corresponding path program 1 times [2023-11-29 05:44:20,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:20,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403152656] [2023-11-29 05:44:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:20,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:20,594 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:44:20,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293352121] [2023-11-29 05:44:20,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:20,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:20,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:44:20,596 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:44:20,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-29 05:44:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:23,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 14825 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:44:23,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:44:24,991 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 218 proven. 305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:44:24,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:44:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2023-11-29 05:44:25,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:25,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403152656] [2023-11-29 05:44:25,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:44:25,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293352121] [2023-11-29 05:44:25,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293352121] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:44:25,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:44:25,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:44:25,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832435959] [2023-11-29 05:44:25,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:25,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:44:25,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:25,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:44:25,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:44:25,070 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 630.8) internal successors, (3154), 5 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:25,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:25,387 INFO L93 Difference]: Finished difference Result 18152 states and 29866 transitions. [2023-11-29 05:44:25,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:44:25,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 630.8) internal successors, (3154), 5 states have internal predecessors, (3154), 0 states have call successors, (0), 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 3442 [2023-11-29 05:44:25,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:25,402 INFO L225 Difference]: With dead ends: 18152 [2023-11-29 05:44:25,402 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:44:25,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6882 GetRequests, 6871 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:44:25,407 INFO L413 NwaCegarLoop]: 14534 mSDtfsCounter, 13236 mSDsluCounter, 36120 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13236 SdHoareTripleChecker+Valid, 50654 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:25,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13236 Valid, 50654 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:44:25,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:44:25,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:44:25,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:25,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:44:25,499 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3442 [2023-11-29 05:44:25,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:25,501 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:44:25,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 630.8) internal successors, (3154), 5 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:25,501 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:44:25,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3444 [2023-11-29 05:44:25,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:25,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:25,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-11-29 05:44:25,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2023-11-29 05:44:25,761 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:25,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:25,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1983811299, now seen corresponding path program 1 times [2023-11-29 05:44:25,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:25,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626014228] [2023-11-29 05:44:25,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:25,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:26,056 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:44:26,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839548074] [2023-11-29 05:44:26,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:26,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:26,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:44:26,057 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:44:26,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-29 05:44:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:29,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 14829 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:44:29,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:44:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 214 proven. 309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:44:30,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:44:30,732 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-11-29 05:44:30,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:30,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626014228] [2023-11-29 05:44:30,732 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:44:30,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839548074] [2023-11-29 05:44:30,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839548074] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:44:30,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:44:30,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:44:30,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916897865] [2023-11-29 05:44:30,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:30,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:44:30,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:30,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:44:30,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:44:30,738 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 630.6) internal successors, (3153), 5 states have internal predecessors, (3153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:31,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:31,054 INFO L93 Difference]: Finished difference Result 18146 states and 29856 transitions. [2023-11-29 05:44:31,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:44:31,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 630.6) internal successors, (3153), 5 states have internal predecessors, (3153), 0 states have call successors, (0), 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 3443 [2023-11-29 05:44:31,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:31,070 INFO L225 Difference]: With dead ends: 18146 [2023-11-29 05:44:31,070 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:44:31,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6884 GetRequests, 6873 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:44:31,075 INFO L413 NwaCegarLoop]: 14544 mSDtfsCounter, 13239 mSDsluCounter, 36140 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13239 SdHoareTripleChecker+Valid, 50684 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:31,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13239 Valid, 50684 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:44:31,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:44:31,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:44:31,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:31,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:44:31,168 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3443 [2023-11-29 05:44:31,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:31,170 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:44:31,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 630.6) internal successors, (3153), 5 states have internal predecessors, (3153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:31,171 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:44:31,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3445 [2023-11-29 05:44:31,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:31,229 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:31,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-11-29 05:44:31,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2023-11-29 05:44:31,430 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:31,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:31,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1321736203, now seen corresponding path program 1 times [2023-11-29 05:44:31,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:31,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93762132] [2023-11-29 05:44:31,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:31,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:31,727 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:44:31,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [486824394] [2023-11-29 05:44:31,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:31,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:31,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:44:31,729 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:44:31,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-29 05:44:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:35,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 14832 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:44:35,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:44:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 210 proven. 313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:44:36,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:44:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2023-11-29 05:44:36,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:36,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93762132] [2023-11-29 05:44:36,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:44:36,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486824394] [2023-11-29 05:44:36,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486824394] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:44:36,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:44:36,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:44:36,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422759298] [2023-11-29 05:44:36,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:36,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:44:36,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:36,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:44:36,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:44:36,540 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 630.4) internal successors, (3152), 5 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:36,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:36,918 INFO L93 Difference]: Finished difference Result 18140 states and 29846 transitions. [2023-11-29 05:44:36,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:44:36,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 630.4) internal successors, (3152), 5 states have internal predecessors, (3152), 0 states have call successors, (0), 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 3444 [2023-11-29 05:44:36,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:36,930 INFO L225 Difference]: With dead ends: 18140 [2023-11-29 05:44:36,930 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:44:36,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6886 GetRequests, 6875 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:44:36,933 INFO L413 NwaCegarLoop]: 14554 mSDtfsCounter, 13242 mSDsluCounter, 36160 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13242 SdHoareTripleChecker+Valid, 50714 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:36,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13242 Valid, 50714 Invalid, 35 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:44:36,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:44:37,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:44:37,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:37,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:44:37,018 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3444 [2023-11-29 05:44:37,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:37,020 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:44:37,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 630.4) internal successors, (3152), 5 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:37,021 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:44:37,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3446 [2023-11-29 05:44:37,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:37,078 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:37,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-11-29 05:44:37,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:37,279 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:37,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:37,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1883483103, now seen corresponding path program 1 times [2023-11-29 05:44:37,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:37,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472950755] [2023-11-29 05:44:37,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:37,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:37,574 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:44:37,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978228995] [2023-11-29 05:44:37,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:37,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:37,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:44:37,576 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:44:37,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-11-29 05:44:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:40,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 14836 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:44:40,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:44:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 206 proven. 317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:44:41,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:44:42,041 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-11-29 05:44:42,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:42,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472950755] [2023-11-29 05:44:42,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:44:42,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978228995] [2023-11-29 05:44:42,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978228995] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:44:42,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:44:42,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:44:42,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010718476] [2023-11-29 05:44:42,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:42,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:44:42,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:42,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:44:42,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:44:42,048 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 630.2) internal successors, (3151), 5 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:42,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:42,354 INFO L93 Difference]: Finished difference Result 18137 states and 29841 transitions. [2023-11-29 05:44:42,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:44:42,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 630.2) internal successors, (3151), 5 states have internal predecessors, (3151), 0 states have call successors, (0), 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 3445 [2023-11-29 05:44:42,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:42,369 INFO L225 Difference]: With dead ends: 18137 [2023-11-29 05:44:42,369 INFO L226 Difference]: Without dead ends: 13659 [2023-11-29 05:44:42,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6888 GetRequests, 6877 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:44:42,374 INFO L413 NwaCegarLoop]: 14564 mSDtfsCounter, 13245 mSDsluCounter, 36180 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13245 SdHoareTripleChecker+Valid, 50744 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:42,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13245 Valid, 50744 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:44:42,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13659 states. [2023-11-29 05:44:42,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13659 to 5167. [2023-11-29 05:44:42,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:42,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:44:42,467 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3445 [2023-11-29 05:44:42,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:42,469 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:44:42,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 630.2) internal successors, (3151), 5 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:42,470 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:44:42,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3447 [2023-11-29 05:44:42,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:42,528 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:42,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-11-29 05:44:42,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:42,729 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:42,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:42,730 INFO L85 PathProgramCache]: Analyzing trace with hash -862511757, now seen corresponding path program 1 times [2023-11-29 05:44:42,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:42,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941786194] [2023-11-29 05:44:42,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:42,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:43,025 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:44:43,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19590362] [2023-11-29 05:44:43,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:43,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:43,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:44:43,027 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:44:43,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-29 05:44:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:46,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 14839 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:44:46,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:44:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 200 proven. 323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:44:47,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:44:47,751 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-11-29 05:44:47,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:47,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941786194] [2023-11-29 05:44:47,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:44:47,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19590362] [2023-11-29 05:44:47,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19590362] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:44:47,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:44:47,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:44:47,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022231395] [2023-11-29 05:44:47,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:47,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:44:47,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:47,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:44:47,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:44:47,758 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 629.8) internal successors, (3149), 5 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:48,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:48,077 INFO L93 Difference]: Finished difference Result 18125 states and 29821 transitions. [2023-11-29 05:44:48,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:44:48,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 629.8) internal successors, (3149), 5 states have internal predecessors, (3149), 0 states have call successors, (0), 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 3446 [2023-11-29 05:44:48,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:48,092 INFO L225 Difference]: With dead ends: 18125 [2023-11-29 05:44:48,092 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:44:48,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6890 GetRequests, 6879 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:44:48,098 INFO L413 NwaCegarLoop]: 14579 mSDtfsCounter, 13251 mSDsluCounter, 36210 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13251 SdHoareTripleChecker+Valid, 50789 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:48,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13251 Valid, 50789 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:44:48,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:44:48,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:44:48,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:48,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:44:48,191 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3446 [2023-11-29 05:44:48,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:48,192 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:44:48,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 629.8) internal successors, (3149), 5 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:48,193 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:44:48,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3448 [2023-11-29 05:44:48,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:48,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:48,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-11-29 05:44:48,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:48,452 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:48,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:48,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1198926781, now seen corresponding path program 1 times [2023-11-29 05:44:48,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:48,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504800909] [2023-11-29 05:44:48,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:48,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:48,749 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:44:48,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33198254] [2023-11-29 05:44:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:48,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:48,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:44:48,751 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:44:48,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-29 05:44:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:52,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 14842 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:44:52,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:44:53,625 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 196 proven. 327 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:44:53,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:44:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-29 05:44:53,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:53,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504800909] [2023-11-29 05:44:53,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:44:53,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33198254] [2023-11-29 05:44:53,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33198254] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:44:53,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:44:53,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:44:53,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950085601] [2023-11-29 05:44:53,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:53,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:44:53,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:53,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:44:53,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:44:53,690 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 4 states, 4 states have (on average 787.0) internal successors, (3148), 4 states have internal predecessors, (3148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:53,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:53,860 INFO L93 Difference]: Finished difference Result 13671 states and 22493 transitions. [2023-11-29 05:44:53,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:44:53,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 787.0) internal successors, (3148), 4 states have internal predecessors, (3148), 0 states have call successors, (0), 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 3447 [2023-11-29 05:44:53,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:53,871 INFO L225 Difference]: With dead ends: 13671 [2023-11-29 05:44:53,871 INFO L226 Difference]: Without dead ends: 9208 [2023-11-29 05:44:53,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6892 GetRequests, 6883 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:44:53,875 INFO L413 NwaCegarLoop]: 7878 mSDtfsCounter, 6544 mSDsluCounter, 14940 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6544 SdHoareTripleChecker+Valid, 22818 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:53,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6544 Valid, 22818 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:44:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9208 states. [2023-11-29 05:44:53,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9208 to 5167. [2023-11-29 05:44:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:53,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:44:53,954 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3447 [2023-11-29 05:44:53,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:53,956 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:44:53,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 787.0) internal successors, (3148), 4 states have internal predecessors, (3148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:53,956 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:44:54,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3449 [2023-11-29 05:44:54,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:54,015 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:54,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-11-29 05:44:54,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2023-11-29 05:44:54,216 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:54,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:54,216 INFO L85 PathProgramCache]: Analyzing trace with hash 736982259, now seen corresponding path program 1 times [2023-11-29 05:44:54,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:54,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578397935] [2023-11-29 05:44:54,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:54,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:54,538 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:44:54,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800288655] [2023-11-29 05:44:54,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:54,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:54,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:44:54,540 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:44:54,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-29 05:44:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 14845 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:44:57,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:44:59,024 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 192 proven. 331 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:44:59,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:44:59,083 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2023-11-29 05:44:59,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:59,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578397935] [2023-11-29 05:44:59,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:44:59,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800288655] [2023-11-29 05:44:59,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800288655] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:44:59,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:44:59,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:44:59,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635259254] [2023-11-29 05:44:59,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:59,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:44:59,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:59,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:44:59,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:44:59,090 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 4 states, 4 states have (on average 786.75) internal successors, (3147), 4 states have internal predecessors, (3147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:59,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:59,261 INFO L93 Difference]: Finished difference Result 13671 states and 22493 transitions. [2023-11-29 05:44:59,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:44:59,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 786.75) internal successors, (3147), 4 states have internal predecessors, (3147), 0 states have call successors, (0), 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 3448 [2023-11-29 05:44:59,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:59,272 INFO L225 Difference]: With dead ends: 13671 [2023-11-29 05:44:59,272 INFO L226 Difference]: Without dead ends: 9214 [2023-11-29 05:44:59,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6894 GetRequests, 6885 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:44:59,276 INFO L413 NwaCegarLoop]: 7888 mSDtfsCounter, 6547 mSDsluCounter, 14950 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6547 SdHoareTripleChecker+Valid, 22838 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:59,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6547 Valid, 22838 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:44:59,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9214 states. [2023-11-29 05:44:59,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9214 to 5167. [2023-11-29 05:44:59,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:59,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:44:59,353 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3448 [2023-11-29 05:44:59,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:59,354 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:44:59,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 786.75) internal successors, (3147), 4 states have internal predecessors, (3147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:59,355 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:44:59,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3450 [2023-11-29 05:44:59,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:59,414 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:59,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-11-29 05:44:59,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:59,615 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:59,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:59,616 INFO L85 PathProgramCache]: Analyzing trace with hash 210575745, now seen corresponding path program 1 times [2023-11-29 05:44:59,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:59,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54048087] [2023-11-29 05:44:59,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:59,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:59,917 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:44:59,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925209456] [2023-11-29 05:44:59,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:59,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:59,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:44:59,919 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:44:59,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-29 05:45:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:03,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 14848 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:45:03,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:45:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 188 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:45:04,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:45:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-11-29 05:45:04,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:04,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54048087] [2023-11-29 05:45:04,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:45:04,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925209456] [2023-11-29 05:45:04,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925209456] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:45:04,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:45:04,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:45:04,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145258794] [2023-11-29 05:45:04,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:04,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:45:04,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:04,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:45:04,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:04,606 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 4 states, 4 states have (on average 786.5) internal successors, (3146), 4 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:04,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:45:04,854 INFO L93 Difference]: Finished difference Result 13671 states and 22493 transitions. [2023-11-29 05:45:04,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:45:04,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 786.5) internal successors, (3146), 4 states have internal predecessors, (3146), 0 states have call successors, (0), 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 3449 [2023-11-29 05:45:04,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:45:04,866 INFO L225 Difference]: With dead ends: 13671 [2023-11-29 05:45:04,866 INFO L226 Difference]: Without dead ends: 9220 [2023-11-29 05:45:04,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6896 GetRequests, 6887 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:04,869 INFO L413 NwaCegarLoop]: 7898 mSDtfsCounter, 6550 mSDsluCounter, 14960 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6550 SdHoareTripleChecker+Valid, 22858 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:45:04,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6550 Valid, 22858 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:45:04,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9220 states. [2023-11-29 05:45:04,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9220 to 5167. [2023-11-29 05:45:04,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:45:04,949 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3449 [2023-11-29 05:45:04,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:45:04,951 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:45:04,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 786.5) internal successors, (3146), 4 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:04,952 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:45:05,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3451 [2023-11-29 05:45:05,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:45:05,010 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:45:05,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-29 05:45:05,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:05,211 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:45:05,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:05,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1429707533, now seen corresponding path program 1 times [2023-11-29 05:45:05,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:05,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777627534] [2023-11-29 05:45:05,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:05,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:05,508 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:45:05,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [267470336] [2023-11-29 05:45:05,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:05,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:05,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:45:05,510 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:45:05,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-29 05:45:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:08,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 14851 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:45:09,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:45:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 184 proven. 339 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:45:10,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:45:10,197 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2023-11-29 05:45:10,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:10,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777627534] [2023-11-29 05:45:10,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:45:10,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267470336] [2023-11-29 05:45:10,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267470336] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:45:10,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:45:10,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:45:10,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844467065] [2023-11-29 05:45:10,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:10,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:45:10,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:10,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:45:10,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:45:10,203 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 629.0) internal successors, (3145), 5 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:10,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:45:10,532 INFO L93 Difference]: Finished difference Result 18101 states and 29781 transitions. [2023-11-29 05:45:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:45:10,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 629.0) internal successors, (3145), 5 states have internal predecessors, (3145), 0 states have call successors, (0), 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 3450 [2023-11-29 05:45:10,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:45:10,549 INFO L225 Difference]: With dead ends: 18101 [2023-11-29 05:45:10,549 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:45:10,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6898 GetRequests, 6887 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:45:10,554 INFO L413 NwaCegarLoop]: 14619 mSDtfsCounter, 13263 mSDsluCounter, 36290 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13263 SdHoareTripleChecker+Valid, 50909 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:45:10,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13263 Valid, 50909 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:45:10,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:45:10,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:45:10,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:10,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:45:10,656 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3450 [2023-11-29 05:45:10,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:45:10,658 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:45:10,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 629.0) internal successors, (3145), 5 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:10,659 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:45:10,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3452 [2023-11-29 05:45:10,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:45:10,724 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:45:10,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-29 05:45:10,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:10,924 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:45:10,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:10,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1480223803, now seen corresponding path program 1 times [2023-11-29 05:45:10,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:10,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349721683] [2023-11-29 05:45:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:10,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:11,221 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:45:11,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366011443] [2023-11-29 05:45:11,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:11,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:11,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:45:11,223 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:45:11,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-29 05:45:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:14,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 14854 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:45:14,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:45:15,727 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 180 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:45:15,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:45:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2023-11-29 05:45:15,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:15,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349721683] [2023-11-29 05:45:15,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:45:15,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366011443] [2023-11-29 05:45:15,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366011443] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:45:15,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:45:15,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:45:15,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691341685] [2023-11-29 05:45:15,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:15,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:45:15,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:15,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:45:15,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:15,792 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 4 states, 4 states have (on average 786.0) internal successors, (3144), 4 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:15,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:45:15,972 INFO L93 Difference]: Finished difference Result 13671 states and 22493 transitions. [2023-11-29 05:45:15,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:45:15,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 786.0) internal successors, (3144), 4 states have internal predecessors, (3144), 0 states have call successors, (0), 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 3451 [2023-11-29 05:45:15,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:45:15,984 INFO L225 Difference]: With dead ends: 13671 [2023-11-29 05:45:15,984 INFO L226 Difference]: Without dead ends: 9232 [2023-11-29 05:45:15,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6900 GetRequests, 6891 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:15,988 INFO L413 NwaCegarLoop]: 7918 mSDtfsCounter, 6556 mSDsluCounter, 14980 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6556 SdHoareTripleChecker+Valid, 22898 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:45:15,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6556 Valid, 22898 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:45:15,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9232 states. [2023-11-29 05:45:16,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9232 to 5167. [2023-11-29 05:45:16,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:16,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:45:16,065 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3451 [2023-11-29 05:45:16,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:45:16,067 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:45:16,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 786.0) internal successors, (3144), 4 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:16,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:45:16,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3453 [2023-11-29 05:45:16,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:45:16,126 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:45:16,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-11-29 05:45:16,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:16,327 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:45:16,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:16,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1131909773, now seen corresponding path program 1 times [2023-11-29 05:45:16,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:16,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237347689] [2023-11-29 05:45:16,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:16,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:16,630 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:45:16,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952404473] [2023-11-29 05:45:16,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:16,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:16,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:45:16,632 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:45:16,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-11-29 05:45:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:20,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 14857 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:45:20,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:45:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 176 proven. 347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:45:21,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:45:21,787 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2023-11-29 05:45:21,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:21,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237347689] [2023-11-29 05:45:21,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:45:21,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952404473] [2023-11-29 05:45:21,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952404473] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:45:21,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:45:21,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:45:21,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501509373] [2023-11-29 05:45:21,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:21,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:45:21,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:21,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:45:21,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:45:21,793 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 628.6) internal successors, (3143), 5 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:22,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:45:22,167 INFO L93 Difference]: Finished difference Result 18089 states and 29761 transitions. [2023-11-29 05:45:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:45:22,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 628.6) internal successors, (3143), 5 states have internal predecessors, (3143), 0 states have call successors, (0), 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 3452 [2023-11-29 05:45:22,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:45:22,182 INFO L225 Difference]: With dead ends: 18089 [2023-11-29 05:45:22,182 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:45:22,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6902 GetRequests, 6891 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:45:22,188 INFO L413 NwaCegarLoop]: 14639 mSDtfsCounter, 13269 mSDsluCounter, 36330 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13269 SdHoareTripleChecker+Valid, 50969 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:45:22,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13269 Valid, 50969 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:45:22,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:45:22,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:45:22,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:22,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:45:22,299 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3452 [2023-11-29 05:45:22,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:45:22,302 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:45:22,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 628.6) internal successors, (3143), 5 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:22,303 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:45:22,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3454 [2023-11-29 05:45:22,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:45:22,367 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:45:22,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2023-11-29 05:45:22,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:22,568 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:45:22,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:22,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1474380425, now seen corresponding path program 1 times [2023-11-29 05:45:22,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:22,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284717925] [2023-11-29 05:45:22,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:22,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:22,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:45:22,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87573816] [2023-11-29 05:45:22,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:22,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:22,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:45:22,887 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:45:22,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-11-29 05:45:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:26,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 14860 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:45:26,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:45:27,327 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 172 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:45:27,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:45:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2023-11-29 05:45:27,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:27,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284717925] [2023-11-29 05:45:27,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:45:27,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87573816] [2023-11-29 05:45:27,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87573816] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:45:27,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:45:27,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:45:27,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735238083] [2023-11-29 05:45:27,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:27,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:45:27,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:27,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:45:27,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:27,392 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 4 states, 4 states have (on average 785.5) internal successors, (3142), 4 states have internal predecessors, (3142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:27,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:45:27,569 INFO L93 Difference]: Finished difference Result 13671 states and 22493 transitions. [2023-11-29 05:45:27,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:45:27,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 785.5) internal successors, (3142), 4 states have internal predecessors, (3142), 0 states have call successors, (0), 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 3453 [2023-11-29 05:45:27,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:45:27,580 INFO L225 Difference]: With dead ends: 13671 [2023-11-29 05:45:27,581 INFO L226 Difference]: Without dead ends: 9244 [2023-11-29 05:45:27,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6904 GetRequests, 6895 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:27,585 INFO L413 NwaCegarLoop]: 7938 mSDtfsCounter, 6562 mSDsluCounter, 15000 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6562 SdHoareTripleChecker+Valid, 22938 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:45:27,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6562 Valid, 22938 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:45:27,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9244 states. [2023-11-29 05:45:27,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9244 to 5167. [2023-11-29 05:45:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:27,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:45:27,664 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3453 [2023-11-29 05:45:27,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:45:27,666 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:45:27,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 785.5) internal successors, (3142), 4 states have internal predecessors, (3142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:27,666 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:45:27,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3455 [2023-11-29 05:45:27,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:45:27,725 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:45:27,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2023-11-29 05:45:27,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:27,926 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:45:27,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:27,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1706430067, now seen corresponding path program 1 times [2023-11-29 05:45:27,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:27,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931782048] [2023-11-29 05:45:27,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:27,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:28,229 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:45:28,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623731043] [2023-11-29 05:45:28,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:28,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:28,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:45:28,231 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:45:28,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-11-29 05:45:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:31,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 14863 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:45:31,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:45:32,868 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 168 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:45:32,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:45:32,951 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2023-11-29 05:45:32,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:32,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931782048] [2023-11-29 05:45:32,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:45:32,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623731043] [2023-11-29 05:45:32,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623731043] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:45:32,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:45:32,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:45:32,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719582827] [2023-11-29 05:45:32,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:32,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:45:32,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:32,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:45:32,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:45:32,958 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 628.2) internal successors, (3141), 5 states have internal predecessors, (3141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:33,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:45:33,323 INFO L93 Difference]: Finished difference Result 18077 states and 29741 transitions. [2023-11-29 05:45:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:45:33,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 628.2) internal successors, (3141), 5 states have internal predecessors, (3141), 0 states have call successors, (0), 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 3454 [2023-11-29 05:45:33,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:45:33,337 INFO L225 Difference]: With dead ends: 18077 [2023-11-29 05:45:33,337 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:45:33,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6906 GetRequests, 6895 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:45:33,342 INFO L413 NwaCegarLoop]: 14659 mSDtfsCounter, 13275 mSDsluCounter, 36370 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13275 SdHoareTripleChecker+Valid, 51029 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:45:33,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13275 Valid, 51029 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:45:33,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:45:33,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:45:33,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:33,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:45:33,434 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3454 [2023-11-29 05:45:33,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:45:33,436 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:45:33,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 628.2) internal successors, (3141), 5 states have internal predecessors, (3141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:33,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:45:33,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3456 [2023-11-29 05:45:33,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:45:33,495 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:45:33,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2023-11-29 05:45:33,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:33,696 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:45:33,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1253446195, now seen corresponding path program 1 times [2023-11-29 05:45:33,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:33,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466300181] [2023-11-29 05:45:33,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:33,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:33,994 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:45:33,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689182529] [2023-11-29 05:45:33,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:33,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:33,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:45:33,996 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:45:33,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-11-29 05:45:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:37,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 14866 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:45:37,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:45:38,431 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 164 proven. 359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:45:38,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:45:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2023-11-29 05:45:38,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:38,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466300181] [2023-11-29 05:45:38,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:45:38,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689182529] [2023-11-29 05:45:38,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689182529] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:45:38,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:45:38,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:45:38,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137497709] [2023-11-29 05:45:38,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:38,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:45:38,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:38,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:45:38,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:38,496 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 4 states, 4 states have (on average 785.0) internal successors, (3140), 4 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:38,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:45:38,665 INFO L93 Difference]: Finished difference Result 13671 states and 22493 transitions. [2023-11-29 05:45:38,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:45:38,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 785.0) internal successors, (3140), 4 states have internal predecessors, (3140), 0 states have call successors, (0), 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 3455 [2023-11-29 05:45:38,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:45:38,676 INFO L225 Difference]: With dead ends: 13671 [2023-11-29 05:45:38,676 INFO L226 Difference]: Without dead ends: 9256 [2023-11-29 05:45:38,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6908 GetRequests, 6899 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:45:38,680 INFO L413 NwaCegarLoop]: 7958 mSDtfsCounter, 6568 mSDsluCounter, 15020 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6568 SdHoareTripleChecker+Valid, 22978 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:45:38,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6568 Valid, 22978 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:45:38,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9256 states. [2023-11-29 05:45:38,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9256 to 5167. [2023-11-29 05:45:38,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:38,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:45:38,758 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3455 [2023-11-29 05:45:38,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:45:38,760 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:45:38,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 785.0) internal successors, (3140), 4 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:38,761 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:45:38,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3457 [2023-11-29 05:45:38,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:45:38,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:45:38,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2023-11-29 05:45:39,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:39,020 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:45:39,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:39,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1946040333, now seen corresponding path program 1 times [2023-11-29 05:45:39,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:39,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209795643] [2023-11-29 05:45:39,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:39,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:39,318 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:45:39,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488963846] [2023-11-29 05:45:39,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:39,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:39,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:45:39,320 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:45:39,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-11-29 05:45:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:42,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 14869 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:45:42,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:45:43,753 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 160 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:45:43,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:45:43,823 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2023-11-29 05:45:43,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:43,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209795643] [2023-11-29 05:45:43,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:45:43,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488963846] [2023-11-29 05:45:43,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488963846] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:45:43,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:45:43,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:45:43,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349536342] [2023-11-29 05:45:43,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:43,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:45:43,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:43,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:45:43,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:45:43,830 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 627.8) internal successors, (3139), 5 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:44,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:45:44,151 INFO L93 Difference]: Finished difference Result 18068 states and 29726 transitions. [2023-11-29 05:45:44,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:45:44,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 627.8) internal successors, (3139), 5 states have internal predecessors, (3139), 0 states have call successors, (0), 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 3456 [2023-11-29 05:45:44,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:45:44,167 INFO L225 Difference]: With dead ends: 18068 [2023-11-29 05:45:44,167 INFO L226 Difference]: Without dead ends: 13659 [2023-11-29 05:45:44,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6910 GetRequests, 6899 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:45:44,172 INFO L413 NwaCegarLoop]: 14679 mSDtfsCounter, 13281 mSDsluCounter, 36410 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13281 SdHoareTripleChecker+Valid, 51089 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:45:44,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13281 Valid, 51089 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:45:44,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13659 states. [2023-11-29 05:45:44,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13659 to 5167. [2023-11-29 05:45:44,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:44,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:45:44,268 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3456 [2023-11-29 05:45:44,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:45:44,270 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:45:44,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 627.8) internal successors, (3139), 5 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:44,270 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:45:44,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3458 [2023-11-29 05:45:44,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:45:44,329 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:45:44,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2023-11-29 05:45:44,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2023-11-29 05:45:44,530 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:45:44,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:44,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1712412049, now seen corresponding path program 1 times [2023-11-29 05:45:44,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:44,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541570783] [2023-11-29 05:45:44,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:44,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:44,855 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:45:44,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870069772] [2023-11-29 05:45:44,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:44,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:44,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:45:44,857 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:45:44,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-11-29 05:45:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:48,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 14872 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:45:48,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:45:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 154 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:45:49,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:45:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-29 05:45:49,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:49,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541570783] [2023-11-29 05:45:49,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:45:49,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870069772] [2023-11-29 05:45:49,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870069772] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:45:49,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:45:49,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:45:49,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431583551] [2023-11-29 05:45:49,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:49,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:45:49,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:49,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:45:49,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:45:49,749 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 627.4) internal successors, (3137), 5 states have internal predecessors, (3137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:50,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:45:50,066 INFO L93 Difference]: Finished difference Result 18056 states and 29706 transitions. [2023-11-29 05:45:50,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:45:50,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 627.4) internal successors, (3137), 5 states have internal predecessors, (3137), 0 states have call successors, (0), 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 3457 [2023-11-29 05:45:50,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:45:50,081 INFO L225 Difference]: With dead ends: 18056 [2023-11-29 05:45:50,082 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:45:50,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6912 GetRequests, 6901 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:45:50,087 INFO L413 NwaCegarLoop]: 14694 mSDtfsCounter, 13287 mSDsluCounter, 36440 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13287 SdHoareTripleChecker+Valid, 51134 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:45:50,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13287 Valid, 51134 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:45:50,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:45:50,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:45:50,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:50,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:45:50,190 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3457 [2023-11-29 05:45:50,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:45:50,192 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:45:50,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 627.4) internal successors, (3137), 5 states have internal predecessors, (3137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:50,193 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:45:50,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3459 [2023-11-29 05:45:50,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:45:50,289 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:45:50,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2023-11-29 05:45:50,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2023-11-29 05:45:50,490 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:45:50,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:50,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1060846091, now seen corresponding path program 1 times [2023-11-29 05:45:50,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:50,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83686425] [2023-11-29 05:45:50,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:50,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:50,786 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:45:50,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536153432] [2023-11-29 05:45:50,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:50,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:50,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:45:50,788 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:45:50,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-11-29 05:45:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:54,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 14876 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:45:54,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:45:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 150 proven. 373 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:45:55,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:45:55,441 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2023-11-29 05:45:55,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:55,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83686425] [2023-11-29 05:45:55,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:45:55,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536153432] [2023-11-29 05:45:55,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536153432] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:45:55,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:45:55,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:45:55,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072146688] [2023-11-29 05:45:55,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:45:55,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:45:55,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:55,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:45:55,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:45:55,447 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 627.2) internal successors, (3136), 5 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:45:55,778 INFO L93 Difference]: Finished difference Result 18050 states and 29696 transitions. [2023-11-29 05:45:55,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:45:55,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 627.2) internal successors, (3136), 5 states have internal predecessors, (3136), 0 states have call successors, (0), 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 3458 [2023-11-29 05:45:55,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:45:55,794 INFO L225 Difference]: With dead ends: 18050 [2023-11-29 05:45:55,794 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:45:55,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6914 GetRequests, 6903 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:45:55,800 INFO L413 NwaCegarLoop]: 14704 mSDtfsCounter, 13290 mSDsluCounter, 36460 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13290 SdHoareTripleChecker+Valid, 51164 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:45:55,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13290 Valid, 51164 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:45:55,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:45:55,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:45:55,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:55,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:45:55,895 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3458 [2023-11-29 05:45:55,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:45:55,897 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:45:55,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 627.2) internal successors, (3136), 5 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:45:55,898 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:45:55,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3460 [2023-11-29 05:45:55,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:45:55,957 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:45:55,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2023-11-29 05:45:56,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:56,157 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:45:56,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:45:56,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1011607123, now seen corresponding path program 1 times [2023-11-29 05:45:56,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:45:56,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283263341] [2023-11-29 05:45:56,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:56,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:56,454 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:45:56,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141605700] [2023-11-29 05:45:56,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:56,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:56,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:45:56,456 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:45:56,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-11-29 05:45:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:59,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 14879 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:45:59,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:46:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 146 proven. 377 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:46:00,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:46:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2023-11-29 05:46:01,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:01,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283263341] [2023-11-29 05:46:01,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:46:01,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141605700] [2023-11-29 05:46:01,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141605700] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:46:01,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:46:01,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:46:01,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104982227] [2023-11-29 05:46:01,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:01,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:46:01,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:01,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:46:01,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:01,024 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 627.0) internal successors, (3135), 5 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:01,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:46:01,321 INFO L93 Difference]: Finished difference Result 18044 states and 29686 transitions. [2023-11-29 05:46:01,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:46:01,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 627.0) internal successors, (3135), 5 states have internal predecessors, (3135), 0 states have call successors, (0), 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 3459 [2023-11-29 05:46:01,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:46:01,335 INFO L225 Difference]: With dead ends: 18044 [2023-11-29 05:46:01,335 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:46:01,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6916 GetRequests, 6905 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:01,340 INFO L413 NwaCegarLoop]: 14714 mSDtfsCounter, 13293 mSDsluCounter, 36480 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13293 SdHoareTripleChecker+Valid, 51194 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:46:01,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13293 Valid, 51194 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:46:01,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:46:01,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:46:01,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:01,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:46:01,423 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3459 [2023-11-29 05:46:01,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:46:01,425 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:46:01,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 627.0) internal successors, (3135), 5 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:01,426 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:46:01,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3461 [2023-11-29 05:46:01,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:46:01,476 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:46:01,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2023-11-29 05:46:01,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:46:01,676 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:46:01,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:01,677 INFO L85 PathProgramCache]: Analyzing trace with hash -14938359, now seen corresponding path program 1 times [2023-11-29 05:46:01,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:01,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387704557] [2023-11-29 05:46:01,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:01,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:01,934 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:46:01,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2093247757] [2023-11-29 05:46:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:01,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:46:01,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:46:01,936 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:46:01,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-11-29 05:46:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:05,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 14883 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:46:05,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:46:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 142 proven. 381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:46:06,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:46:06,378 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-11-29 05:46:06,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:06,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387704557] [2023-11-29 05:46:06,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:46:06,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093247757] [2023-11-29 05:46:06,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093247757] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:46:06,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:46:06,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:46:06,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106699701] [2023-11-29 05:46:06,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:06,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:46:06,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:06,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:46:06,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:06,383 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 626.8) internal successors, (3134), 5 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:06,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:46:06,697 INFO L93 Difference]: Finished difference Result 18038 states and 29676 transitions. [2023-11-29 05:46:06,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:46:06,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 626.8) internal successors, (3134), 5 states have internal predecessors, (3134), 0 states have call successors, (0), 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 3460 [2023-11-29 05:46:06,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:46:06,715 INFO L225 Difference]: With dead ends: 18038 [2023-11-29 05:46:06,715 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:46:06,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6918 GetRequests, 6907 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:06,720 INFO L413 NwaCegarLoop]: 14724 mSDtfsCounter, 13296 mSDsluCounter, 36500 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13296 SdHoareTripleChecker+Valid, 51224 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:46:06,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13296 Valid, 51224 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:46:06,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:46:06,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:46:06,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:06,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:46:06,842 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3460 [2023-11-29 05:46:06,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:46:06,844 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:46:06,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 626.8) internal successors, (3134), 5 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:06,845 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:46:06,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3462 [2023-11-29 05:46:06,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:46:06,899 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:46:06,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2023-11-29 05:46:07,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2023-11-29 05:46:07,100 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:46:07,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:07,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1655138027, now seen corresponding path program 1 times [2023-11-29 05:46:07,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:07,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386055442] [2023-11-29 05:46:07,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:07,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:07,400 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:46:07,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69800356] [2023-11-29 05:46:07,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:07,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:46:07,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:46:07,402 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:46:07,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-11-29 05:46:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:10,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 14886 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:46:10,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:46:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 138 proven. 385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:46:11,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:46:11,882 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2023-11-29 05:46:11,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:11,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386055442] [2023-11-29 05:46:11,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:46:11,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69800356] [2023-11-29 05:46:11,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69800356] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:46:11,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:46:11,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:46:11,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753938550] [2023-11-29 05:46:11,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:11,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:46:11,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:11,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:46:11,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:11,889 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 626.6) internal successors, (3133), 5 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:12,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:46:12,183 INFO L93 Difference]: Finished difference Result 18032 states and 29666 transitions. [2023-11-29 05:46:12,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:46:12,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 626.6) internal successors, (3133), 5 states have internal predecessors, (3133), 0 states have call successors, (0), 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 3461 [2023-11-29 05:46:12,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:46:12,198 INFO L225 Difference]: With dead ends: 18032 [2023-11-29 05:46:12,198 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:46:12,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6920 GetRequests, 6909 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:12,203 INFO L413 NwaCegarLoop]: 14734 mSDtfsCounter, 13299 mSDsluCounter, 36520 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13299 SdHoareTripleChecker+Valid, 51254 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:46:12,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13299 Valid, 51254 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:46:12,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:46:12,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:46:12,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:12,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:46:12,288 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3461 [2023-11-29 05:46:12,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:46:12,290 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:46:12,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 626.6) internal successors, (3133), 5 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:12,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:46:12,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3463 [2023-11-29 05:46:12,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:46:12,340 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:46:12,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2023-11-29 05:46:12,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2023-11-29 05:46:12,541 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:46:12,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:12,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1649810937, now seen corresponding path program 1 times [2023-11-29 05:46:12,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:12,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587202022] [2023-11-29 05:46:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:12,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:12,833 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:46:12,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047405879] [2023-11-29 05:46:12,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:12,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:46:12,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:46:12,835 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:46:12,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-11-29 05:46:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:15,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 14890 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:46:15,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:46:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 134 proven. 389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:46:16,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:46:16,955 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2023-11-29 05:46:16,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:16,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587202022] [2023-11-29 05:46:16,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:46:16,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047405879] [2023-11-29 05:46:16,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047405879] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:46:16,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:46:16,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:46:16,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17273200] [2023-11-29 05:46:16,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:16,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:46:16,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:16,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:46:16,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:16,962 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 626.4) internal successors, (3132), 5 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:17,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:46:17,278 INFO L93 Difference]: Finished difference Result 18026 states and 29656 transitions. [2023-11-29 05:46:17,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:46:17,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 626.4) internal successors, (3132), 5 states have internal predecessors, (3132), 0 states have call successors, (0), 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 3462 [2023-11-29 05:46:17,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:46:17,291 INFO L225 Difference]: With dead ends: 18026 [2023-11-29 05:46:17,291 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:46:17,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6922 GetRequests, 6911 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:17,295 INFO L413 NwaCegarLoop]: 14744 mSDtfsCounter, 13302 mSDsluCounter, 36540 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13302 SdHoareTripleChecker+Valid, 51284 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:46:17,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13302 Valid, 51284 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:46:17,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:46:17,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:46:17,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:17,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:46:17,374 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3462 [2023-11-29 05:46:17,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:46:17,375 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:46:17,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 626.4) internal successors, (3132), 5 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:17,376 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:46:17,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3464 [2023-11-29 05:46:17,425 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:46:17,426 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:46:17,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2023-11-29 05:46:17,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2023-11-29 05:46:17,627 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:46:17,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:17,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1817841111, now seen corresponding path program 1 times [2023-11-29 05:46:17,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:17,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609220404] [2023-11-29 05:46:17,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:17,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:17,887 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:46:17,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029746840] [2023-11-29 05:46:17,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:17,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:46:17,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:46:17,889 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:46:17,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-11-29 05:46:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:20,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 14893 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:46:21,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:46:22,086 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 130 proven. 393 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:46:22,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:46:22,153 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2023-11-29 05:46:22,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:22,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609220404] [2023-11-29 05:46:22,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:46:22,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029746840] [2023-11-29 05:46:22,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029746840] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:46:22,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:46:22,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:46:22,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667921698] [2023-11-29 05:46:22,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:22,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:46:22,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:22,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:46:22,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:22,159 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 626.2) internal successors, (3131), 5 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:22,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:46:22,461 INFO L93 Difference]: Finished difference Result 18020 states and 29646 transitions. [2023-11-29 05:46:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:46:22,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 626.2) internal successors, (3131), 5 states have internal predecessors, (3131), 0 states have call successors, (0), 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 3463 [2023-11-29 05:46:22,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:46:22,476 INFO L225 Difference]: With dead ends: 18020 [2023-11-29 05:46:22,476 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:46:22,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6924 GetRequests, 6913 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:22,481 INFO L413 NwaCegarLoop]: 14754 mSDtfsCounter, 13305 mSDsluCounter, 36560 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13305 SdHoareTripleChecker+Valid, 51314 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:46:22,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13305 Valid, 51314 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:46:22,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:46:22,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:46:22,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:22,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:46:22,570 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3463 [2023-11-29 05:46:22,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:46:22,572 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:46:22,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 626.2) internal successors, (3131), 5 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:22,573 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:46:22,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3465 [2023-11-29 05:46:22,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:46:22,625 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:46:22,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2023-11-29 05:46:22,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:46:22,827 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:46:22,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:22,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2116948741, now seen corresponding path program 1 times [2023-11-29 05:46:22,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:22,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740197803] [2023-11-29 05:46:22,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:22,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:23,068 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:46:23,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794988337] [2023-11-29 05:46:23,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:23,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:46:23,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:46:23,070 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:46:23,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-11-29 05:46:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:26,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 14897 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:46:26,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:46:27,365 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 126 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:46:27,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:46:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2023-11-29 05:46:27,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:27,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740197803] [2023-11-29 05:46:27,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:46:27,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794988337] [2023-11-29 05:46:27,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794988337] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:46:27,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:46:27,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:46:27,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280010166] [2023-11-29 05:46:27,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:27,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:46:27,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:27,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:46:27,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:27,443 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 626.0) internal successors, (3130), 5 states have internal predecessors, (3130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:27,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:46:27,748 INFO L93 Difference]: Finished difference Result 18014 states and 29636 transitions. [2023-11-29 05:46:27,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:46:27,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 626.0) internal successors, (3130), 5 states have internal predecessors, (3130), 0 states have call successors, (0), 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 3464 [2023-11-29 05:46:27,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:46:27,762 INFO L225 Difference]: With dead ends: 18014 [2023-11-29 05:46:27,762 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:46:27,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6926 GetRequests, 6915 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:27,767 INFO L413 NwaCegarLoop]: 14764 mSDtfsCounter, 13308 mSDsluCounter, 36580 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13308 SdHoareTripleChecker+Valid, 51344 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:46:27,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13308 Valid, 51344 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:46:27,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:46:27,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:46:27,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:27,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:46:27,856 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3464 [2023-11-29 05:46:27,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:46:27,858 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:46:27,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 626.0) internal successors, (3130), 5 states have internal predecessors, (3130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:27,859 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:46:27,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3466 [2023-11-29 05:46:27,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:46:27,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:46:27,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2023-11-29 05:46:28,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:46:28,110 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:46:28,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:28,111 INFO L85 PathProgramCache]: Analyzing trace with hash 699589785, now seen corresponding path program 1 times [2023-11-29 05:46:28,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:28,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872589520] [2023-11-29 05:46:28,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:28,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:28,372 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:46:28,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26593295] [2023-11-29 05:46:28,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:28,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:46:28,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:46:28,374 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:46:28,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-11-29 05:46:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:31,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 14900 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:46:31,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:46:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 122 proven. 401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:46:32,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:46:32,663 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2023-11-29 05:46:32,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:32,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872589520] [2023-11-29 05:46:32,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:46:32,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26593295] [2023-11-29 05:46:32,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26593295] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:46:32,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:46:32,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:46:32,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157947991] [2023-11-29 05:46:32,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:32,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:46:32,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:32,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:46:32,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:32,670 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 625.8) internal successors, (3129), 5 states have internal predecessors, (3129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:32,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:46:32,962 INFO L93 Difference]: Finished difference Result 18008 states and 29626 transitions. [2023-11-29 05:46:32,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:46:32,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 625.8) internal successors, (3129), 5 states have internal predecessors, (3129), 0 states have call successors, (0), 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 3465 [2023-11-29 05:46:32,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:46:32,975 INFO L225 Difference]: With dead ends: 18008 [2023-11-29 05:46:32,975 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:46:32,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6928 GetRequests, 6917 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:32,980 INFO L413 NwaCegarLoop]: 14774 mSDtfsCounter, 13311 mSDsluCounter, 36600 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13311 SdHoareTripleChecker+Valid, 51374 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:46:32,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13311 Valid, 51374 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:46:32,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:46:33,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:46:33,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:33,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:46:33,061 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3465 [2023-11-29 05:46:33,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:46:33,062 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:46:33,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 625.8) internal successors, (3129), 5 states have internal predecessors, (3129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:33,063 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:46:33,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3467 [2023-11-29 05:46:33,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:46:33,149 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:46:33,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2023-11-29 05:46:33,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2023-11-29 05:46:33,351 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:46:33,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:33,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1286734339, now seen corresponding path program 1 times [2023-11-29 05:46:33,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:33,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710361066] [2023-11-29 05:46:33,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:33,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:33,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:46:33,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890356641] [2023-11-29 05:46:33,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:33,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:46:33,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:46:33,637 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:46:33,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-11-29 05:46:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:36,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 14904 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:46:36,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:46:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 118 proven. 405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:46:37,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:46:37,873 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2023-11-29 05:46:37,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:37,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710361066] [2023-11-29 05:46:37,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:46:37,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890356641] [2023-11-29 05:46:37,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890356641] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:46:37,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:46:37,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:46:37,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435202373] [2023-11-29 05:46:37,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:37,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:46:37,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:37,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:46:37,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:37,879 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 625.6) internal successors, (3128), 5 states have internal predecessors, (3128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:38,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:46:38,168 INFO L93 Difference]: Finished difference Result 18002 states and 29616 transitions. [2023-11-29 05:46:38,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:46:38,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 625.6) internal successors, (3128), 5 states have internal predecessors, (3128), 0 states have call successors, (0), 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 3466 [2023-11-29 05:46:38,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:46:38,181 INFO L225 Difference]: With dead ends: 18002 [2023-11-29 05:46:38,181 INFO L226 Difference]: Without dead ends: 13656 [2023-11-29 05:46:38,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6930 GetRequests, 6919 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:38,186 INFO L413 NwaCegarLoop]: 14784 mSDtfsCounter, 13314 mSDsluCounter, 36620 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13314 SdHoareTripleChecker+Valid, 51404 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:46:38,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13314 Valid, 51404 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:46:38,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-11-29 05:46:38,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 5167. [2023-11-29 05:46:38,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:38,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:46:38,266 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3466 [2023-11-29 05:46:38,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:46:38,267 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:46:38,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 625.6) internal successors, (3128), 5 states have internal predecessors, (3128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:38,268 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:46:38,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3468 [2023-11-29 05:46:38,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:46:38,318 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:46:38,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2023-11-29 05:46:38,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2023-11-29 05:46:38,519 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:46:38,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:38,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1158004059, now seen corresponding path program 1 times [2023-11-29 05:46:38,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:38,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892024584] [2023-11-29 05:46:38,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:38,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:38,770 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:46:38,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302666486] [2023-11-29 05:46:38,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:38,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:46:38,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:46:38,771 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:46:38,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-11-29 05:46:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:41,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 14907 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:46:41,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:46:43,016 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 114 proven. 409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:46:43,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:46:43,088 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2023-11-29 05:46:43,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:43,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892024584] [2023-11-29 05:46:43,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:46:43,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302666486] [2023-11-29 05:46:43,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302666486] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:46:43,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:46:43,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:46:43,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334122184] [2023-11-29 05:46:43,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:43,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:46:43,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:43,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:46:43,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:43,094 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 625.4) internal successors, (3127), 5 states have internal predecessors, (3127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:43,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:46:43,391 INFO L93 Difference]: Finished difference Result 18001 states and 29613 transitions. [2023-11-29 05:46:43,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:46:43,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 625.4) internal successors, (3127), 5 states have internal predecessors, (3127), 0 states have call successors, (0), 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 3467 [2023-11-29 05:46:43,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:46:43,406 INFO L225 Difference]: With dead ends: 18001 [2023-11-29 05:46:43,406 INFO L226 Difference]: Without dead ends: 13661 [2023-11-29 05:46:43,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6932 GetRequests, 6921 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:43,411 INFO L413 NwaCegarLoop]: 14794 mSDtfsCounter, 13317 mSDsluCounter, 36640 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13317 SdHoareTripleChecker+Valid, 51434 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:46:43,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13317 Valid, 51434 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:46:43,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13661 states. [2023-11-29 05:46:43,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13661 to 5167. [2023-11-29 05:46:43,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:43,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:46:43,493 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3467 [2023-11-29 05:46:43,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:46:43,495 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:46:43,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 625.4) internal successors, (3127), 5 states have internal predecessors, (3127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:43,495 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:46:43,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3469 [2023-11-29 05:46:43,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:46:43,545 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:46:43,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2023-11-29 05:46:43,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2023-11-29 05:46:43,746 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:46:43,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:43,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1811877633, now seen corresponding path program 1 times [2023-11-29 05:46:43,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:43,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813026297] [2023-11-29 05:46:43,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:43,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:43,997 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:46:43,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473852909] [2023-11-29 05:46:43,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:43,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:46:43,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:46:43,999 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:46:44,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2023-11-29 05:46:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:47,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 14911 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:46:47,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:46:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 104 proven. 419 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:46:48,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:46:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2023-11-29 05:46:48,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:48,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813026297] [2023-11-29 05:46:48,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:46:48,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473852909] [2023-11-29 05:46:48,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473852909] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:46:48,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:46:48,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:46:48,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522400289] [2023-11-29 05:46:48,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:48,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:46:48,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:48,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:46:48,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:48,291 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 624.6) internal successors, (3123), 5 states have internal predecessors, (3123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:48,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:46:48,593 INFO L93 Difference]: Finished difference Result 18008 states and 29626 transitions. [2023-11-29 05:46:48,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:46:48,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 624.6) internal successors, (3123), 5 states have internal predecessors, (3123), 0 states have call successors, (0), 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 3468 [2023-11-29 05:46:48,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:46:48,607 INFO L225 Difference]: With dead ends: 18008 [2023-11-29 05:46:48,607 INFO L226 Difference]: Without dead ends: 13669 [2023-11-29 05:46:48,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6934 GetRequests, 6923 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:48,612 INFO L413 NwaCegarLoop]: 14813 mSDtfsCounter, 13326 mSDsluCounter, 36678 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13326 SdHoareTripleChecker+Valid, 51491 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:46:48,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13326 Valid, 51491 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:46:48,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13669 states. [2023-11-29 05:46:48,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13669 to 5167. [2023-11-29 05:46:48,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:48,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:46:48,688 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3468 [2023-11-29 05:46:48,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:46:48,690 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:46:48,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 624.6) internal successors, (3123), 5 states have internal predecessors, (3123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:48,690 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:46:48,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3470 [2023-11-29 05:46:48,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:46:48,739 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:46:48,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2023-11-29 05:46:48,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2023-11-29 05:46:48,940 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:46:48,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:48,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1230936325, now seen corresponding path program 1 times [2023-11-29 05:46:48,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:48,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616674872] [2023-11-29 05:46:48,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:48,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:49,197 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:46:49,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353335096] [2023-11-29 05:46:49,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:49,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:46:49,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:46:49,199 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:46:49,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-11-29 05:46:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:52,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 14914 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:46:52,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:46:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 100 proven. 423 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:46:53,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:46:53,488 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2023-11-29 05:46:53,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:53,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616674872] [2023-11-29 05:46:53,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:46:53,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353335096] [2023-11-29 05:46:53,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353335096] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:46:53,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:46:53,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:46:53,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286230649] [2023-11-29 05:46:53,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:53,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:46:53,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:53,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:46:53,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:53,494 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 4 states, 4 states have (on average 780.5) internal successors, (3122), 4 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:53,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:46:53,654 INFO L93 Difference]: Finished difference Result 13689 states and 22523 transitions. [2023-11-29 05:46:53,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:46:53,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 780.5) internal successors, (3122), 4 states have internal predecessors, (3122), 0 states have call successors, (0), 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 3469 [2023-11-29 05:46:53,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:46:53,665 INFO L225 Difference]: With dead ends: 13689 [2023-11-29 05:46:53,665 INFO L226 Difference]: Without dead ends: 9350 [2023-11-29 05:46:53,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6936 GetRequests, 6927 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:46:53,668 INFO L413 NwaCegarLoop]: 8109 mSDtfsCounter, 6619 mSDsluCounter, 15171 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6619 SdHoareTripleChecker+Valid, 23280 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:46:53,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6619 Valid, 23280 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:46:53,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9350 states. [2023-11-29 05:46:53,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9350 to 5167. [2023-11-29 05:46:53,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:53,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:46:53,741 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3469 [2023-11-29 05:46:53,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:46:53,742 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:46:53,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 780.5) internal successors, (3122), 4 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:53,743 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:46:53,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3471 [2023-11-29 05:46:53,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:46:53,793 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:46:53,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2023-11-29 05:46:53,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2023-11-29 05:46:53,994 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:46:53,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:53,994 INFO L85 PathProgramCache]: Analyzing trace with hash 122612865, now seen corresponding path program 1 times [2023-11-29 05:46:53,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:53,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730339855] [2023-11-29 05:46:53,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:53,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:54,255 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:46:54,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224229575] [2023-11-29 05:46:54,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:54,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:46:54,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:46:54,256 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:46:54,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-11-29 05:46:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:57,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 14917 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:46:57,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:46:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 96 proven. 427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:46:58,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:46:58,559 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2023-11-29 05:46:58,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:58,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730339855] [2023-11-29 05:46:58,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:46:58,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224229575] [2023-11-29 05:46:58,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224229575] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:46:58,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:46:58,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:46:58,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21502935] [2023-11-29 05:46:58,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:46:58,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:46:58,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:58,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:46:58,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:58,564 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 624.2) internal successors, (3121), 5 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:58,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:46:58,888 INFO L93 Difference]: Finished difference Result 18020 states and 29646 transitions. [2023-11-29 05:46:58,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:46:58,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 624.2) internal successors, (3121), 5 states have internal predecessors, (3121), 0 states have call successors, (0), 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 3470 [2023-11-29 05:46:58,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:46:58,902 INFO L225 Difference]: With dead ends: 18020 [2023-11-29 05:46:58,902 INFO L226 Difference]: Without dead ends: 13681 [2023-11-29 05:46:58,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6938 GetRequests, 6927 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:46:58,906 INFO L413 NwaCegarLoop]: 14827 mSDtfsCounter, 13332 mSDsluCounter, 36706 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13332 SdHoareTripleChecker+Valid, 51533 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:46:58,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13332 Valid, 51533 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:46:58,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13681 states. [2023-11-29 05:46:58,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13681 to 5167. [2023-11-29 05:46:58,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:58,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:46:58,985 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3470 [2023-11-29 05:46:58,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:46:58,987 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:46:58,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 624.2) internal successors, (3121), 5 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:46:58,988 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:46:59,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3472 [2023-11-29 05:46:59,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:46:59,037 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:46:59,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2023-11-29 05:46:59,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2023-11-29 05:46:59,237 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:46:59,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:59,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1392890815, now seen corresponding path program 1 times [2023-11-29 05:46:59,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:59,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459196289] [2023-11-29 05:46:59,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:59,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:59,484 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:46:59,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519870356] [2023-11-29 05:46:59,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:59,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:46:59,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:46:59,485 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:46:59,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-11-29 05:47:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:02,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 14920 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:47:02,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 92 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:47:03,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:47:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2023-11-29 05:47:03,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:03,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459196289] [2023-11-29 05:47:03,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:47:03,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519870356] [2023-11-29 05:47:03,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519870356] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:03,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:03,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:47:03,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437215467] [2023-11-29 05:47:03,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:03,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:47:03,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:03,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:47:03,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:03,588 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 4 states, 4 states have (on average 780.0) internal successors, (3120), 4 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:03,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:03,752 INFO L93 Difference]: Finished difference Result 13701 states and 22543 transitions. [2023-11-29 05:47:03,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:47:03,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 780.0) internal successors, (3120), 4 states have internal predecessors, (3120), 0 states have call successors, (0), 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 3471 [2023-11-29 05:47:03,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:03,762 INFO L225 Difference]: With dead ends: 13701 [2023-11-29 05:47:03,762 INFO L226 Difference]: Without dead ends: 9362 [2023-11-29 05:47:03,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6940 GetRequests, 6931 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:03,766 INFO L413 NwaCegarLoop]: 8123 mSDtfsCounter, 6625 mSDsluCounter, 15185 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6625 SdHoareTripleChecker+Valid, 23308 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:03,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6625 Valid, 23308 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:47:03,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9362 states. [2023-11-29 05:47:03,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9362 to 5167. [2023-11-29 05:47:03,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:03,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:47:03,831 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3471 [2023-11-29 05:47:03,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:03,832 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:47:03,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 780.0) internal successors, (3120), 4 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:03,833 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:47:03,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3473 [2023-11-29 05:47:03,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:03,882 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:47:03,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2023-11-29 05:47:04,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:04,083 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:04,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:04,083 INFO L85 PathProgramCache]: Analyzing trace with hash 96830081, now seen corresponding path program 1 times [2023-11-29 05:47:04,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:04,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9351566] [2023-11-29 05:47:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:04,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:04,331 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:47:04,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896300176] [2023-11-29 05:47:04,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:04,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:04,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:04,333 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:04,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-11-29 05:47:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:07,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 14923 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:47:07,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 84 proven. 439 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:47:08,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:47:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-29 05:47:08,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:08,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9351566] [2023-11-29 05:47:08,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:47:08,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896300176] [2023-11-29 05:47:08,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896300176] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:08,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:08,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:47:08,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122148923] [2023-11-29 05:47:08,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:08,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:47:08,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:08,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:47:08,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:08,570 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 4 states, 4 states have (on average 779.25) internal successors, (3117), 4 states have internal predecessors, (3117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:08,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:08,730 INFO L93 Difference]: Finished difference Result 13713 states and 22563 transitions. [2023-11-29 05:47:08,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:47:08,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 779.25) internal successors, (3117), 4 states have internal predecessors, (3117), 0 states have call successors, (0), 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 3472 [2023-11-29 05:47:08,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:08,740 INFO L225 Difference]: With dead ends: 13713 [2023-11-29 05:47:08,740 INFO L226 Difference]: Without dead ends: 9374 [2023-11-29 05:47:08,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6942 GetRequests, 6933 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:08,743 INFO L413 NwaCegarLoop]: 8137 mSDtfsCounter, 6631 mSDsluCounter, 15199 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6631 SdHoareTripleChecker+Valid, 23336 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:08,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6631 Valid, 23336 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:47:08,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9374 states. [2023-11-29 05:47:08,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9374 to 5167. [2023-11-29 05:47:08,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:08,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:47:08,811 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3472 [2023-11-29 05:47:08,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:08,813 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:47:08,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 779.25) internal successors, (3117), 4 states have internal predecessors, (3117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:08,813 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:47:08,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3474 [2023-11-29 05:47:08,861 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:08,862 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:47:08,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2023-11-29 05:47:09,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:09,063 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:09,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:09,063 INFO L85 PathProgramCache]: Analyzing trace with hash -2079680829, now seen corresponding path program 1 times [2023-11-29 05:47:09,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:09,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569225482] [2023-11-29 05:47:09,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:09,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:09,304 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:47:09,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16130073] [2023-11-29 05:47:09,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:09,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:09,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:09,305 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:09,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2023-11-29 05:47:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:12,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 14926 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:47:12,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:13,758 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 80 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:47:13,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:47:13,831 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2023-11-29 05:47:13,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:13,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569225482] [2023-11-29 05:47:13,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:47:13,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16130073] [2023-11-29 05:47:13,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16130073] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:13,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:13,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:47:13,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158978447] [2023-11-29 05:47:13,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:13,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:47:13,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:13,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:47:13,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:47:13,837 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 623.2) internal successors, (3116), 5 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:14,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:14,143 INFO L93 Difference]: Finished difference Result 18044 states and 29686 transitions. [2023-11-29 05:47:14,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:47:14,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 623.2) internal successors, (3116), 5 states have internal predecessors, (3116), 0 states have call successors, (0), 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 3473 [2023-11-29 05:47:14,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:14,157 INFO L225 Difference]: With dead ends: 18044 [2023-11-29 05:47:14,157 INFO L226 Difference]: Without dead ends: 13705 [2023-11-29 05:47:14,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6944 GetRequests, 6933 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:47:14,161 INFO L413 NwaCegarLoop]: 14855 mSDtfsCounter, 13344 mSDsluCounter, 36762 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13344 SdHoareTripleChecker+Valid, 51617 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:14,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13344 Valid, 51617 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:47:14,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13705 states. [2023-11-29 05:47:14,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13705 to 5167. [2023-11-29 05:47:14,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:14,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:47:14,243 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3473 [2023-11-29 05:47:14,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:14,244 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:47:14,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 623.2) internal successors, (3116), 5 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:14,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:47:14,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3475 [2023-11-29 05:47:14,293 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:14,294 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:47:14,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2023-11-29 05:47:14,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:14,495 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:14,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:14,495 INFO L85 PathProgramCache]: Analyzing trace with hash -319663043, now seen corresponding path program 1 times [2023-11-29 05:47:14,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:14,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869129111] [2023-11-29 05:47:14,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:14,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:14,768 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:47:14,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279970145] [2023-11-29 05:47:14,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:14,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:14,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:14,770 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:14,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2023-11-29 05:47:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:17,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 14929 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:47:17,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:18,759 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 76 proven. 447 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:47:18,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:47:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2023-11-29 05:47:18,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:18,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869129111] [2023-11-29 05:47:18,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:47:18,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279970145] [2023-11-29 05:47:18,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279970145] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:18,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:18,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:47:18,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105140981] [2023-11-29 05:47:18,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:18,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:47:18,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:18,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:47:18,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:18,817 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 4 states, 4 states have (on average 778.75) internal successors, (3115), 4 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:18,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:18,978 INFO L93 Difference]: Finished difference Result 13725 states and 22583 transitions. [2023-11-29 05:47:18,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:47:18,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 778.75) internal successors, (3115), 4 states have internal predecessors, (3115), 0 states have call successors, (0), 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 3474 [2023-11-29 05:47:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:18,988 INFO L225 Difference]: With dead ends: 13725 [2023-11-29 05:47:18,988 INFO L226 Difference]: Without dead ends: 9386 [2023-11-29 05:47:18,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6946 GetRequests, 6937 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:18,991 INFO L413 NwaCegarLoop]: 8151 mSDtfsCounter, 6637 mSDsluCounter, 15213 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6637 SdHoareTripleChecker+Valid, 23364 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:18,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6637 Valid, 23364 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:47:18,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9386 states. [2023-11-29 05:47:19,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9386 to 5167. [2023-11-29 05:47:19,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:19,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:47:19,057 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3474 [2023-11-29 05:47:19,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:19,059 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:47:19,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 778.75) internal successors, (3115), 4 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:19,060 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:47:19,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3476 [2023-11-29 05:47:19,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:19,109 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:47:19,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2023-11-29 05:47:19,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:19,310 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:19,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:19,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1924149187, now seen corresponding path program 1 times [2023-11-29 05:47:19,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:19,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345161167] [2023-11-29 05:47:19,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:19,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:19,555 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:47:19,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896445126] [2023-11-29 05:47:19,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:19,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:19,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:19,557 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:19,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2023-11-29 05:47:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:22,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 14932 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:47:22,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:23,597 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 72 proven. 451 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:47:23,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:47:23,736 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2023-11-29 05:47:23,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:23,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345161167] [2023-11-29 05:47:23,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:47:23,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896445126] [2023-11-29 05:47:23,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896445126] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:23,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:23,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:47:23,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538777361] [2023-11-29 05:47:23,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:23,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:47:23,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:23,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:47:23,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:47:23,743 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 622.8) internal successors, (3114), 5 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:24,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:24,035 INFO L93 Difference]: Finished difference Result 18056 states and 29706 transitions. [2023-11-29 05:47:24,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:47:24,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 622.8) internal successors, (3114), 5 states have internal predecessors, (3114), 0 states have call successors, (0), 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 3475 [2023-11-29 05:47:24,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:24,048 INFO L225 Difference]: With dead ends: 18056 [2023-11-29 05:47:24,048 INFO L226 Difference]: Without dead ends: 13717 [2023-11-29 05:47:24,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6948 GetRequests, 6937 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:47:24,052 INFO L413 NwaCegarLoop]: 14869 mSDtfsCounter, 13350 mSDsluCounter, 36790 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13350 SdHoareTripleChecker+Valid, 51659 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:24,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13350 Valid, 51659 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:47:24,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13717 states. [2023-11-29 05:47:24,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13717 to 5167. [2023-11-29 05:47:24,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:24,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:47:24,132 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3475 [2023-11-29 05:47:24,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:24,133 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:47:24,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 622.8) internal successors, (3114), 5 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:24,134 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:47:24,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3477 [2023-11-29 05:47:24,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:24,183 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:47:24,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2023-11-29 05:47:24,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:24,384 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:24,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:24,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1614644871, now seen corresponding path program 1 times [2023-11-29 05:47:24,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:24,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458852905] [2023-11-29 05:47:24,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:24,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:24,628 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:47:24,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020941047] [2023-11-29 05:47:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:24,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:24,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:24,630 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:24,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2023-11-29 05:47:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:27,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 14935 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:47:27,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 68 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:47:28,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:47:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2023-11-29 05:47:28,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:28,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458852905] [2023-11-29 05:47:28,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:47:28,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020941047] [2023-11-29 05:47:28,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020941047] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:28,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:28,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:47:28,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679716581] [2023-11-29 05:47:28,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:28,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:47:28,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:28,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:47:28,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:28,851 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 4 states, 4 states have (on average 778.25) internal successors, (3113), 4 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:29,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:29,017 INFO L93 Difference]: Finished difference Result 13737 states and 22603 transitions. [2023-11-29 05:47:29,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:47:29,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 778.25) internal successors, (3113), 4 states have internal predecessors, (3113), 0 states have call successors, (0), 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 3476 [2023-11-29 05:47:29,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:29,027 INFO L225 Difference]: With dead ends: 13737 [2023-11-29 05:47:29,027 INFO L226 Difference]: Without dead ends: 9398 [2023-11-29 05:47:29,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6950 GetRequests, 6941 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:29,030 INFO L413 NwaCegarLoop]: 8165 mSDtfsCounter, 6643 mSDsluCounter, 15227 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6643 SdHoareTripleChecker+Valid, 23392 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:29,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6643 Valid, 23392 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:47:29,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9398 states. [2023-11-29 05:47:29,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9398 to 5167. [2023-11-29 05:47:29,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:29,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:47:29,095 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3476 [2023-11-29 05:47:29,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:29,097 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:47:29,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 778.25) internal successors, (3113), 4 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:29,097 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:47:29,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3478 [2023-11-29 05:47:29,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:29,146 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:47:29,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2023-11-29 05:47:29,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:29,347 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:29,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:29,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1720942525, now seen corresponding path program 1 times [2023-11-29 05:47:29,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:29,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124306178] [2023-11-29 05:47:29,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:29,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:29,596 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:47:29,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422142350] [2023-11-29 05:47:29,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:29,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:29,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:29,598 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:29,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2023-11-29 05:47:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:32,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 14938 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:47:32,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 62 proven. 461 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:47:33,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:47:33,747 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2023-11-29 05:47:33,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:33,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124306178] [2023-11-29 05:47:33,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:47:33,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422142350] [2023-11-29 05:47:33,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422142350] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:33,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:33,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:47:33,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958615924] [2023-11-29 05:47:33,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:33,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:47:33,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:33,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:47:33,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:47:33,752 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 622.2) internal successors, (3111), 5 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:34,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:34,065 INFO L93 Difference]: Finished difference Result 18073 states and 29733 transitions. [2023-11-29 05:47:34,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:47:34,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 622.2) internal successors, (3111), 5 states have internal predecessors, (3111), 0 states have call successors, (0), 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 3477 [2023-11-29 05:47:34,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:34,080 INFO L225 Difference]: With dead ends: 18073 [2023-11-29 05:47:34,080 INFO L226 Difference]: Without dead ends: 13734 [2023-11-29 05:47:34,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6952 GetRequests, 6941 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:47:34,084 INFO L413 NwaCegarLoop]: 14885 mSDtfsCounter, 13359 mSDsluCounter, 36822 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13359 SdHoareTripleChecker+Valid, 51707 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:34,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13359 Valid, 51707 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:47:34,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13734 states. [2023-11-29 05:47:34,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13734 to 5167. [2023-11-29 05:47:34,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:34,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:47:34,166 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3477 [2023-11-29 05:47:34,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:34,168 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:47:34,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 622.2) internal successors, (3111), 5 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:34,168 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:47:34,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3479 [2023-11-29 05:47:34,217 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:34,218 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:47:34,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2023-11-29 05:47:34,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2023-11-29 05:47:34,418 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:34,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:34,419 INFO L85 PathProgramCache]: Analyzing trace with hash -766169841, now seen corresponding path program 1 times [2023-11-29 05:47:34,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:34,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391618551] [2023-11-29 05:47:34,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:34,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:34,663 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:47:34,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906029299] [2023-11-29 05:47:34,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:34,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:34,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:34,665 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:34,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2023-11-29 05:47:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:37,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 14941 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:47:37,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 34 proven. 489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:47:38,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:47:38,842 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2023-11-29 05:47:38,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:38,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391618551] [2023-11-29 05:47:38,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:47:38,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906029299] [2023-11-29 05:47:38,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906029299] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:38,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:38,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:47:38,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254762033] [2023-11-29 05:47:38,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:38,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:47:38,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:38,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:47:38,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:38,848 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 4 states, 4 states have (on average 774.5) internal successors, (3098), 4 states have internal predecessors, (3098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:39,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:39,020 INFO L93 Difference]: Finished difference Result 13788 states and 22688 transitions. [2023-11-29 05:47:39,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:47:39,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 774.5) internal successors, (3098), 4 states have internal predecessors, (3098), 0 states have call successors, (0), 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 3478 [2023-11-29 05:47:39,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:39,029 INFO L225 Difference]: With dead ends: 13788 [2023-11-29 05:47:39,030 INFO L226 Difference]: Without dead ends: 9449 [2023-11-29 05:47:39,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6954 GetRequests, 6945 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:39,033 INFO L413 NwaCegarLoop]: 8223 mSDtfsCounter, 6670 mSDsluCounter, 15285 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6670 SdHoareTripleChecker+Valid, 23508 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:39,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6670 Valid, 23508 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:47:39,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9449 states. [2023-11-29 05:47:39,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9449 to 5167. [2023-11-29 05:47:39,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:39,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:47:39,102 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3478 [2023-11-29 05:47:39,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:39,104 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:47:39,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 774.5) internal successors, (3098), 4 states have internal predecessors, (3098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:39,104 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:47:39,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3480 [2023-11-29 05:47:39,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:39,190 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:47:39,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2023-11-29 05:47:39,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2023-11-29 05:47:39,391 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:39,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:39,392 INFO L85 PathProgramCache]: Analyzing trace with hash 2005153617, now seen corresponding path program 1 times [2023-11-29 05:47:39,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:39,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535343440] [2023-11-29 05:47:39,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:39,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:39,635 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:47:39,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1933533417] [2023-11-29 05:47:39,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:39,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:39,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:39,637 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:39,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2023-11-29 05:47:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:42,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 14945 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:47:42,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:43,733 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 26 proven. 497 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:47:43,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:47:43,810 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2023-11-29 05:47:43,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:43,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535343440] [2023-11-29 05:47:43,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:47:43,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933533417] [2023-11-29 05:47:43,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933533417] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:43,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:43,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 05:47:43,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248389384] [2023-11-29 05:47:43,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:43,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:47:43,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:43,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:47:43,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:47:43,816 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 5 states, 5 states have (on average 619.0) internal successors, (3095), 5 states have internal predecessors, (3095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:44,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:44,130 INFO L93 Difference]: Finished difference Result 18125 states and 29821 transitions. [2023-11-29 05:47:44,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:47:44,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 619.0) internal successors, (3095), 5 states have internal predecessors, (3095), 0 states have call successors, (0), 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 3479 [2023-11-29 05:47:44,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:44,144 INFO L225 Difference]: With dead ends: 18125 [2023-11-29 05:47:44,144 INFO L226 Difference]: Without dead ends: 13786 [2023-11-29 05:47:44,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6956 GetRequests, 6945 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:47:44,149 INFO L413 NwaCegarLoop]: 14948 mSDtfsCounter, 13386 mSDsluCounter, 36948 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13386 SdHoareTripleChecker+Valid, 51896 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:44,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13386 Valid, 51896 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:47:44,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13786 states. [2023-11-29 05:47:44,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13786 to 5167. [2023-11-29 05:47:44,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:44,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:47:44,232 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3479 [2023-11-29 05:47:44,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:44,233 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:47:44,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.0) internal successors, (3095), 5 states have internal predecessors, (3095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:44,234 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:47:44,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3481 [2023-11-29 05:47:44,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:44,284 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:47:44,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2023-11-29 05:47:44,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2023-11-29 05:47:44,484 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:44,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:44,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2128977931, now seen corresponding path program 1 times [2023-11-29 05:47:44,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:44,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939543587] [2023-11-29 05:47:44,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:44,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:44,727 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:47:44,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1065563720] [2023-11-29 05:47:44,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:44,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:44,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:44,729 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:44,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2023-11-29 05:47:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:47,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 14949 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:47:47,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:48,767 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 22 proven. 501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:47:48,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:47:48,824 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2023-11-29 05:47:48,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:48,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939543587] [2023-11-29 05:47:48,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:47:48,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065563720] [2023-11-29 05:47:48,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065563720] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:47:48,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:47:48,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 05:47:48,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367492059] [2023-11-29 05:47:48,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:47:48,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:47:48,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:48,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:47:48,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:48,829 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 4 states, 4 states have (on average 773.5) internal successors, (3094), 4 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:48,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:47:48,996 INFO L93 Difference]: Finished difference Result 13806 states and 22718 transitions. [2023-11-29 05:47:48,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:47:48,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 773.5) internal successors, (3094), 4 states have internal predecessors, (3094), 0 states have call successors, (0), 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 3480 [2023-11-29 05:47:48,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:47:49,005 INFO L225 Difference]: With dead ends: 13806 [2023-11-29 05:47:49,006 INFO L226 Difference]: Without dead ends: 9467 [2023-11-29 05:47:49,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6958 GetRequests, 6949 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:47:49,009 INFO L413 NwaCegarLoop]: 8244 mSDtfsCounter, 6679 mSDsluCounter, 15306 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6679 SdHoareTripleChecker+Valid, 23550 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:47:49,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6679 Valid, 23550 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:47:49,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9467 states. [2023-11-29 05:47:49,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9467 to 5167. [2023-11-29 05:47:49,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 1.6476964769647697) internal successors, (8512), 5166 states have internal predecessors, (8512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:49,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8512 transitions. [2023-11-29 05:47:49,077 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8512 transitions. Word has length 3480 [2023-11-29 05:47:49,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:47:49,078 INFO L495 AbstractCegarLoop]: Abstraction has 5167 states and 8512 transitions. [2023-11-29 05:47:49,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 773.5) internal successors, (3094), 4 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:47:49,079 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8512 transitions. [2023-11-29 05:47:49,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3482 [2023-11-29 05:47:49,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:47:49,128 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:47:49,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2023-11-29 05:47:49,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:49,329 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:47:49,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:47:49,330 INFO L85 PathProgramCache]: Analyzing trace with hash -648310125, now seen corresponding path program 1 times [2023-11-29 05:47:49,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:47:49,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66058161] [2023-11-29 05:47:49,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:49,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:47:49,576 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:47:49,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889155251] [2023-11-29 05:47:49,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:47:49,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:47:49,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:47:49,578 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:47:49,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2023-11-29 05:47:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:47:52,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 14952 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 05:47:52,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:47:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 251 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:47:56,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:47:59,754 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 271 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:47:59,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:47:59,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66058161] [2023-11-29 05:47:59,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:47:59,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889155251] [2023-11-29 05:47:59,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889155251] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:47:59,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:47:59,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 22 [2023-11-29 05:47:59,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107597947] [2023-11-29 05:47:59,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:47:59,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 05:47:59,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:47:59,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 05:47:59,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2023-11-29 05:47:59,763 INFO L87 Difference]: Start difference. First operand 5167 states and 8512 transitions. Second operand has 22 states, 22 states have (on average 299.40909090909093) internal successors, (6587), 22 states have internal predecessors, (6587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:48:37,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:48:37,836 INFO L93 Difference]: Finished difference Result 45343 states and 74022 transitions. [2023-11-29 05:48:37,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 05:48:37,837 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 299.40909090909093) internal successors, (6587), 22 states have internal predecessors, (6587), 0 states have call successors, (0), 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 3481 [2023-11-29 05:48:37,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:48:37,862 INFO L225 Difference]: With dead ends: 45343 [2023-11-29 05:48:37,862 INFO L226 Difference]: Without dead ends: 41004 [2023-11-29 05:48:37,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7004 GetRequests, 6951 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=569, Invalid=2401, Unknown=0, NotChecked=0, Total=2970 [2023-11-29 05:48:37,868 INFO L413 NwaCegarLoop]: 22254 mSDtfsCounter, 115771 mSDsluCounter, 229158 mSDsCounter, 0 mSdLazyCounter, 65480 mSolverCounterSat, 1383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115771 SdHoareTripleChecker+Valid, 251412 SdHoareTripleChecker+Invalid, 66863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.9s SdHoareTripleChecker+Time, 1383 IncrementalHoareTripleChecker+Valid, 65480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:48:37,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115771 Valid, 251412 Invalid, 66863 Unknown, 0 Unchecked, 0.9s Time], IncrementalHoareTripleChecker [1383 Valid, 65480 Invalid, 0 Unknown, 0 Unchecked, 33.5s Time] [2023-11-29 05:48:37,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41004 states. [2023-11-29 05:48:38,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41004 to 10842. [2023-11-29 05:48:38,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10842 states, 10841 states have (on average 1.6484641638225257) internal successors, (17871), 10841 states have internal predecessors, (17871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:48:38,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10842 states to 10842 states and 17871 transitions. [2023-11-29 05:48:38,114 INFO L78 Accepts]: Start accepts. Automaton has 10842 states and 17871 transitions. Word has length 3481 [2023-11-29 05:48:38,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:48:38,116 INFO L495 AbstractCegarLoop]: Abstraction has 10842 states and 17871 transitions. [2023-11-29 05:48:38,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 299.40909090909093) internal successors, (6587), 22 states have internal predecessors, (6587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:48:38,117 INFO L276 IsEmpty]: Start isEmpty. Operand 10842 states and 17871 transitions. [2023-11-29 05:48:38,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3483 [2023-11-29 05:48:38,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:48:38,169 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:48:38,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2023-11-29 05:48:38,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:48:38,370 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:48:38,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:48:38,370 INFO L85 PathProgramCache]: Analyzing trace with hash -658831009, now seen corresponding path program 1 times [2023-11-29 05:48:38,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:48:38,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530899685] [2023-11-29 05:48:38,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:38,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:48:38,617 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:48:38,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501405789] [2023-11-29 05:48:38,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:38,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:48:38,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:48:38,619 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:48:38,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2023-11-29 05:48:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:41,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 14955 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:48:41,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:48:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 251 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:48:46,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:48:49,862 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 269 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:48:49,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:48:49,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530899685] [2023-11-29 05:48:49,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:48:49,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501405789] [2023-11-29 05:48:49,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501405789] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:48:49,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:48:49,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2023-11-29 05:48:49,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728770696] [2023-11-29 05:48:49,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:48:49,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:48:49,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:48:49,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:48:49,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:48:49,871 INFO L87 Difference]: Start difference. First operand 10842 states and 17871 transitions. Second operand has 20 states, 20 states have (on average 329.4) internal successors, (6588), 20 states have internal predecessors, (6588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:49:14,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:49:14,654 INFO L93 Difference]: Finished difference Result 63121 states and 103458 transitions. [2023-11-29 05:49:14,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 05:49:14,655 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 329.4) internal successors, (6588), 20 states have internal predecessors, (6588), 0 states have call successors, (0), 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 3482 [2023-11-29 05:49:14,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:49:14,701 INFO L225 Difference]: With dead ends: 63121 [2023-11-29 05:49:14,702 INFO L226 Difference]: Without dead ends: 53691 [2023-11-29 05:49:14,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6989 GetRequests, 6951 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=368, Invalid=1192, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 05:49:14,716 INFO L413 NwaCegarLoop]: 16834 mSDtfsCounter, 84002 mSDsluCounter, 131924 mSDsCounter, 0 mSdLazyCounter, 40419 mSolverCounterSat, 1377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84002 SdHoareTripleChecker+Valid, 148758 SdHoareTripleChecker+Invalid, 41796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 1377 IncrementalHoareTripleChecker+Valid, 40419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:49:14,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84002 Valid, 148758 Invalid, 41796 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [1377 Valid, 40419 Invalid, 0 Unknown, 0 Unchecked, 22.0s Time] [2023-11-29 05:49:14,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53691 states. [2023-11-29 05:49:15,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53691 to 10851. [2023-11-29 05:49:15,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10851 states, 10850 states have (on average 1.648479262672811) internal successors, (17886), 10850 states have internal predecessors, (17886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:49:15,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10851 states to 10851 states and 17886 transitions. [2023-11-29 05:49:15,167 INFO L78 Accepts]: Start accepts. Automaton has 10851 states and 17886 transitions. Word has length 3482 [2023-11-29 05:49:15,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:49:15,170 INFO L495 AbstractCegarLoop]: Abstraction has 10851 states and 17886 transitions. [2023-11-29 05:49:15,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 329.4) internal successors, (6588), 20 states have internal predecessors, (6588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:49:15,171 INFO L276 IsEmpty]: Start isEmpty. Operand 10851 states and 17886 transitions. [2023-11-29 05:49:15,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3484 [2023-11-29 05:49:15,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:49:15,233 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:49:15,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2023-11-29 05:49:15,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2023-11-29 05:49:15,434 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:49:15,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:49:15,435 INFO L85 PathProgramCache]: Analyzing trace with hash 434392505, now seen corresponding path program 1 times [2023-11-29 05:49:15,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:49:15,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703833908] [2023-11-29 05:49:15,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:49:15,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:49:15,733 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:49:15,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284729047] [2023-11-29 05:49:15,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:49:15,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:49:15,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:49:15,735 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:49:15,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2023-11-29 05:49:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:49:19,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 14958 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:49:19,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:49:24,549 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 204 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:49:24,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:49:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 248 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:49:28,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:49:28,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703833908] [2023-11-29 05:49:28,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:49:28,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284729047] [2023-11-29 05:49:28,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284729047] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:49:28,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:49:28,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2023-11-29 05:49:28,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616943704] [2023-11-29 05:49:28,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:49:28,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:49:28,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:49:28,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:49:28,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:49:28,353 INFO L87 Difference]: Start difference. First operand 10851 states and 17886 transitions. Second operand has 20 states, 20 states have (on average 332.95) internal successors, (6659), 20 states have internal predecessors, (6659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:49:54,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:49:54,704 INFO L93 Difference]: Finished difference Result 54913 states and 90408 transitions. [2023-11-29 05:49:54,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:49:54,706 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 332.95) internal successors, (6659), 20 states have internal predecessors, (6659), 0 states have call successors, (0), 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 3483 [2023-11-29 05:49:54,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:49:54,739 INFO L225 Difference]: With dead ends: 54913 [2023-11-29 05:49:54,739 INFO L226 Difference]: Without dead ends: 45477 [2023-11-29 05:49:54,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6986 GetRequests, 6951 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=321, Invalid=1011, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 05:49:54,748 INFO L413 NwaCegarLoop]: 10260 mSDtfsCounter, 83834 mSDsluCounter, 102340 mSDsCounter, 0 mSdLazyCounter, 45200 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83834 SdHoareTripleChecker+Valid, 112600 SdHoareTripleChecker+Invalid, 45203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:49:54,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83834 Valid, 112600 Invalid, 45203 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [3 Valid, 45200 Invalid, 0 Unknown, 0 Unchecked, 23.9s Time] [2023-11-29 05:49:54,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45477 states. [2023-11-29 05:49:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45477 to 17340. [2023-11-29 05:49:55,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17340 states, 17339 states have (on average 1.6496337735740239) internal successors, (28603), 17339 states have internal predecessors, (28603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:49:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17340 states to 17340 states and 28603 transitions. [2023-11-29 05:49:55,135 INFO L78 Accepts]: Start accepts. Automaton has 17340 states and 28603 transitions. Word has length 3483 [2023-11-29 05:49:55,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:49:55,137 INFO L495 AbstractCegarLoop]: Abstraction has 17340 states and 28603 transitions. [2023-11-29 05:49:55,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 332.95) internal successors, (6659), 20 states have internal predecessors, (6659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:49:55,138 INFO L276 IsEmpty]: Start isEmpty. Operand 17340 states and 28603 transitions. [2023-11-29 05:49:55,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3485 [2023-11-29 05:49:55,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:49:55,208 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:49:55,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2023-11-29 05:49:55,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2023-11-29 05:49:55,409 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:49:55,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:49:55,410 INFO L85 PathProgramCache]: Analyzing trace with hash 607835329, now seen corresponding path program 1 times [2023-11-29 05:49:55,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:49:55,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742121226] [2023-11-29 05:49:55,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:49:55,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:49:55,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:49:55,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855368858] [2023-11-29 05:49:55,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:49:55,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:49:55,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:49:55,707 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:49:55,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2840b200-4cae-4ffa-a608-7354e7cf648a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2023-11-29 05:49:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:49:59,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 14961 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-29 05:49:59,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:50:23,850 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 158 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:50:23,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:50:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 226 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:50:53,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:50:53,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742121226] [2023-11-29 05:50:53,889 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:50:53,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855368858] [2023-11-29 05:50:53,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855368858] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:50:53,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:50:53,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 40 [2023-11-29 05:50:53,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433096772] [2023-11-29 05:50:53,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:50:53,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 05:50:53,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:50:53,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 05:50:53,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1371, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 05:50:53,900 INFO L87 Difference]: Start difference. First operand 17340 states and 28603 transitions. Second operand has 40 states, 40 states have (on average 168.275) internal successors, (6731), 40 states have internal predecessors, (6731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)