./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.adding.3.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/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_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.adding.3.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/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_53ecf596-fa4d-4192-958f-a09b0bfaac86/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 2f62226d73e0e183857d998fb902bf54be9131b3acae6a442e91dae883f96d96 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:37:17,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:37:17,284 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 03:37:17,288 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:37:17,289 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:37:17,312 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:37:17,312 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:37:17,313 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:37:17,314 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:37:17,314 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:37:17,315 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:37:17,316 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:37:17,317 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:37:17,317 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:37:17,318 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:37:17,318 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:37:17,319 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:37:17,319 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:37:17,320 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:37:17,320 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:37:17,321 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:37:17,321 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:37:17,322 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:37:17,322 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:37:17,323 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:37:17,323 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:37:17,323 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:37:17,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:37:17,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:37:17,325 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:37:17,325 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:37:17,325 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:37:17,326 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:37:17,326 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:37:17,326 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:37:17,326 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:37:17,327 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:37:17,327 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:37:17,327 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:37:17,327 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_53ecf596-fa4d-4192-958f-a09b0bfaac86/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f62226d73e0e183857d998fb902bf54be9131b3acae6a442e91dae883f96d96 [2023-11-29 03:37:17,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:37:17,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:37:17,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:37:17,615 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:37:17,616 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:37:17,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.adding.3.prop1-back-serstep.c [2023-11-29 03:37:20,398 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:37:20,597 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:37:20,597 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.adding.3.prop1-back-serstep.c [2023-11-29 03:37:20,609 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/data/842b1b1a8/fb98ef867a6e4703a85e07dda5e04c23/FLAG679d8095d [2023-11-29 03:37:20,623 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/data/842b1b1a8/fb98ef867a6e4703a85e07dda5e04c23 [2023-11-29 03:37:20,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:37:20,627 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:37:20,628 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:37:20,628 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:37:20,634 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:37:20,634 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:37:20" (1/1) ... [2023-11-29 03:37:20,635 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40610bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:20, skipping insertion in model container [2023-11-29 03:37:20,636 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:37:20" (1/1) ... [2023-11-29 03:37:20,680 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:37:20,834 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_53ecf596-fa4d-4192-958f-a09b0bfaac86/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.adding.3.prop1-back-serstep.c[1174,1187] [2023-11-29 03:37:20,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:37:20,995 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:37:21,009 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_53ecf596-fa4d-4192-958f-a09b0bfaac86/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.adding.3.prop1-back-serstep.c[1174,1187] [2023-11-29 03:37:21,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:37:21,101 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:37:21,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:21 WrapperNode [2023-11-29 03:37:21,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:37:21,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:37:21,103 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:37:21,103 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:37:21,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:21" (1/1) ... [2023-11-29 03:37:21,146 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:21" (1/1) ... [2023-11-29 03:37:21,356 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2193 [2023-11-29 03:37:21,357 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:37:21,357 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:37:21,358 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:37:21,358 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:37:21,369 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:21" (1/1) ... [2023-11-29 03:37:21,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:21" (1/1) ... [2023-11-29 03:37:21,399 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:21" (1/1) ... [2023-11-29 03:37:21,442 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 03:37:21,443 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:21" (1/1) ... [2023-11-29 03:37:21,443 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:21" (1/1) ... [2023-11-29 03:37:21,485 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:21" (1/1) ... [2023-11-29 03:37:21,504 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:21" (1/1) ... [2023-11-29 03:37:21,516 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:21" (1/1) ... [2023-11-29 03:37:21,528 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:21" (1/1) ... [2023-11-29 03:37:21,553 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:37:21,554 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:37:21,554 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:37:21,554 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:37:21,555 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:21" (1/1) ... [2023-11-29 03:37:21,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:37:21,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:37:21,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:37:21,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:37:21,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:37:21,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:37:21,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:37:21,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:37:21,940 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:37:21,942 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:37:23,782 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:37:23,840 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:37:23,840 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 03:37:23,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:37:23 BoogieIcfgContainer [2023-11-29 03:37:23,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:37:23,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:37:23,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:37:23,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:37:23,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:37:20" (1/3) ... [2023-11-29 03:37:23,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234c328d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:37:23, skipping insertion in model container [2023-11-29 03:37:23,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:21" (2/3) ... [2023-11-29 03:37:23,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234c328d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:37:23, skipping insertion in model container [2023-11-29 03:37:23,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:37:23" (3/3) ... [2023-11-29 03:37:23,850 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.adding.3.prop1-back-serstep.c [2023-11-29 03:37:23,870 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:37:23,870 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:37:23,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:37:23,938 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;@20d28896, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:37:23,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:37:23,944 INFO L276 IsEmpty]: Start isEmpty. Operand has 514 states, 512 states have (on average 1.671875) internal successors, (856), 513 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:23,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-29 03:37:23,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:23,956 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] [2023-11-29 03:37:23,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:23,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:23,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1269485081, now seen corresponding path program 1 times [2023-11-29 03:37:23,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:23,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767775025] [2023-11-29 03:37:23,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:23,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:24,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:24,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767775025] [2023-11-29 03:37:24,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767775025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:24,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:24,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:37:24,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983582368] [2023-11-29 03:37:24,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:24,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:37:24,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:24,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:37:24,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:37:24,831 INFO L87 Difference]: Start difference. First operand has 514 states, 512 states have (on average 1.671875) internal successors, (856), 513 states have internal predecessors, (856), 0 states have call successors, (0), 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 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:25,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:25,678 INFO L93 Difference]: Finished difference Result 1470 states and 2454 transitions. [2023-11-29 03:37:25,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:37:25,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-11-29 03:37:25,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:25,700 INFO L225 Difference]: With dead ends: 1470 [2023-11-29 03:37:25,700 INFO L226 Difference]: Without dead ends: 990 [2023-11-29 03:37:25,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 03:37:25,708 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 2389 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2389 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:25,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2389 Valid, 1949 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:37:25,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-11-29 03:37:25,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 560. [2023-11-29 03:37:25,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 1.663685152057245) internal successors, (930), 559 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:25,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 930 transitions. [2023-11-29 03:37:25,777 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 930 transitions. Word has length 84 [2023-11-29 03:37:25,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:25,778 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 930 transitions. [2023-11-29 03:37:25,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:25,778 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 930 transitions. [2023-11-29 03:37:25,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 03:37:25,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:25,781 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] [2023-11-29 03:37:25,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:37:25,782 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:25,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:25,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1387787353, now seen corresponding path program 1 times [2023-11-29 03:37:25,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:25,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332204961] [2023-11-29 03:37:25,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:25,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:26,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:26,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332204961] [2023-11-29 03:37:26,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332204961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:26,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:26,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:37:26,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863435057] [2023-11-29 03:37:26,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:26,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:37:26,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:26,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:37:26,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:37:26,088 INFO L87 Difference]: Start difference. First operand 560 states and 930 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:26,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:26,641 INFO L93 Difference]: Finished difference Result 1492 states and 2477 transitions. [2023-11-29 03:37:26,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:37:26,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-11-29 03:37:26,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:26,648 INFO L225 Difference]: With dead ends: 1492 [2023-11-29 03:37:26,648 INFO L226 Difference]: Without dead ends: 1014 [2023-11-29 03:37:26,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:37:26,651 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 3142 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3142 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:26,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3142 Valid, 2257 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:37:26,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2023-11-29 03:37:26,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 565. [2023-11-29 03:37:26,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 1.6613475177304964) internal successors, (937), 564 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:26,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 937 transitions. [2023-11-29 03:37:26,678 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 937 transitions. Word has length 85 [2023-11-29 03:37:26,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:26,679 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 937 transitions. [2023-11-29 03:37:26,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:26,679 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 937 transitions. [2023-11-29 03:37:26,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 03:37:26,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:26,682 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] [2023-11-29 03:37:26,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:37:26,682 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:26,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:26,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1912023503, now seen corresponding path program 1 times [2023-11-29 03:37:26,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:26,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892100855] [2023-11-29 03:37:26,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:26,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:27,074 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 03:37:27,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:27,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892100855] [2023-11-29 03:37:27,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892100855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:27,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:27,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:37:27,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056858476] [2023-11-29 03:37:27,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:27,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:37:27,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:27,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:37:27,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:37:27,077 INFO L87 Difference]: Start difference. First operand 565 states and 937 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:27,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:27,762 INFO L93 Difference]: Finished difference Result 1468 states and 2441 transitions. [2023-11-29 03:37:27,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:37:27,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-29 03:37:27,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:27,770 INFO L225 Difference]: With dead ends: 1468 [2023-11-29 03:37:27,770 INFO L226 Difference]: Without dead ends: 990 [2023-11-29 03:37:27,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 03:37:27,773 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 2379 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2379 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:27,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2379 Valid, 1949 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:37:27,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-11-29 03:37:27,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 566. [2023-11-29 03:37:27,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.6601769911504425) internal successors, (938), 565 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:27,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 938 transitions. [2023-11-29 03:37:27,794 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 938 transitions. Word has length 86 [2023-11-29 03:37:27,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:27,794 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 938 transitions. [2023-11-29 03:37:27,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:27,795 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 938 transitions. [2023-11-29 03:37:27,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 03:37:27,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:27,796 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] [2023-11-29 03:37:27,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:37:27,797 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:27,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:27,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1974063117, now seen corresponding path program 1 times [2023-11-29 03:37:27,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:27,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577950216] [2023-11-29 03:37:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:27,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:28,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:28,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577950216] [2023-11-29 03:37:28,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577950216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:28,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:28,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:37:28,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469988518] [2023-11-29 03:37:28,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:28,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:37:28,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:28,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:37:28,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:37:28,079 INFO L87 Difference]: Start difference. First operand 566 states and 938 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:28,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:28,837 INFO L93 Difference]: Finished difference Result 1492 states and 2475 transitions. [2023-11-29 03:37:28,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:37:28,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-29 03:37:28,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:28,844 INFO L225 Difference]: With dead ends: 1492 [2023-11-29 03:37:28,844 INFO L226 Difference]: Without dead ends: 1014 [2023-11-29 03:37:28,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:37:28,846 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 2383 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:28,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2383 Valid, 2881 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:37:28,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2023-11-29 03:37:28,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 574. [2023-11-29 03:37:28,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 1.6579406631762652) internal successors, (950), 573 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 950 transitions. [2023-11-29 03:37:28,866 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 950 transitions. Word has length 86 [2023-11-29 03:37:28,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:28,866 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 950 transitions. [2023-11-29 03:37:28,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:28,867 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 950 transitions. [2023-11-29 03:37:28,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 03:37:28,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:28,868 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] [2023-11-29 03:37:28,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:37:28,869 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:28,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:28,869 INFO L85 PathProgramCache]: Analyzing trace with hash 295592119, now seen corresponding path program 1 times [2023-11-29 03:37:28,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:28,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144091824] [2023-11-29 03:37:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:28,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:29,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:29,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144091824] [2023-11-29 03:37:29,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144091824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:29,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:29,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:37:29,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085117661] [2023-11-29 03:37:29,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:29,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:37:29,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:29,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:37:29,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:37:29,225 INFO L87 Difference]: Start difference. First operand 574 states and 950 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:29,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:29,896 INFO L93 Difference]: Finished difference Result 1468 states and 2439 transitions. [2023-11-29 03:37:29,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:37:29,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2023-11-29 03:37:29,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:29,903 INFO L225 Difference]: With dead ends: 1468 [2023-11-29 03:37:29,903 INFO L226 Difference]: Without dead ends: 990 [2023-11-29 03:37:29,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 03:37:29,905 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 2368 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2368 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:29,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2368 Valid, 1949 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:37:29,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-11-29 03:37:29,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 575. [2023-11-29 03:37:29,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 1.656794425087108) internal successors, (951), 574 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:29,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 951 transitions. [2023-11-29 03:37:29,925 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 951 transitions. Word has length 87 [2023-11-29 03:37:29,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:29,925 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 951 transitions. [2023-11-29 03:37:29,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:29,926 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 951 transitions. [2023-11-29 03:37:29,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 03:37:29,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:29,927 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] [2023-11-29 03:37:29,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:37:29,928 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:29,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:29,928 INFO L85 PathProgramCache]: Analyzing trace with hash -522056331, now seen corresponding path program 1 times [2023-11-29 03:37:29,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:29,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734435530] [2023-11-29 03:37:29,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:29,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:30,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:30,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:30,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734435530] [2023-11-29 03:37:30,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734435530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:30,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:30,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:37:30,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033170476] [2023-11-29 03:37:30,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:30,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:37:30,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:30,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:37:30,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:37:30,176 INFO L87 Difference]: Start difference. First operand 575 states and 951 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:30,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:30,846 INFO L93 Difference]: Finished difference Result 1492 states and 2473 transitions. [2023-11-29 03:37:30,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:37:30,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2023-11-29 03:37:30,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:30,853 INFO L225 Difference]: With dead ends: 1492 [2023-11-29 03:37:30,853 INFO L226 Difference]: Without dead ends: 1014 [2023-11-29 03:37:30,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:37:30,855 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 2374 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2374 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:30,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2374 Valid, 2883 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:37:30,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2023-11-29 03:37:30,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 580. [2023-11-29 03:37:30,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 1.6545768566493955) internal successors, (958), 579 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:30,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 958 transitions. [2023-11-29 03:37:30,874 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 958 transitions. Word has length 87 [2023-11-29 03:37:30,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:30,874 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 958 transitions. [2023-11-29 03:37:30,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:30,875 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 958 transitions. [2023-11-29 03:37:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 03:37:30,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:30,876 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] [2023-11-29 03:37:30,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 03:37:30,877 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:30,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:30,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1557021119, now seen corresponding path program 1 times [2023-11-29 03:37:30,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:30,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193317241] [2023-11-29 03:37:30,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:30,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:31,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:31,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:31,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193317241] [2023-11-29 03:37:31,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193317241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:31,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:31,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:37:31,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83826219] [2023-11-29 03:37:31,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:31,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:37:31,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:31,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:37:31,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:37:31,199 INFO L87 Difference]: Start difference. First operand 580 states and 958 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:31,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:31,236 INFO L93 Difference]: Finished difference Result 584 states and 962 transitions. [2023-11-29 03:37:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:37:31,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-11-29 03:37:31,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:31,240 INFO L225 Difference]: With dead ends: 584 [2023-11-29 03:37:31,240 INFO L226 Difference]: Without dead ends: 582 [2023-11-29 03:37:31,241 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 03:37:31,242 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 1 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:31,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2542 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:31,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2023-11-29 03:37:31,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2023-11-29 03:37:31,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 581 states have (on average 1.6523235800344234) internal successors, (960), 581 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:31,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 960 transitions. [2023-11-29 03:37:31,262 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 960 transitions. Word has length 88 [2023-11-29 03:37:31,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:31,262 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 960 transitions. [2023-11-29 03:37:31,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:31,263 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 960 transitions. [2023-11-29 03:37:31,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 03:37:31,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:31,264 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] [2023-11-29 03:37:31,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:37:31,264 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:31,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:31,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1021289005, now seen corresponding path program 1 times [2023-11-29 03:37:31,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:31,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910844991] [2023-11-29 03:37:31,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:31,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:31,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:31,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910844991] [2023-11-29 03:37:31,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910844991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:31,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:31,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:37:31,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087848693] [2023-11-29 03:37:31,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:31,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:37:31,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:31,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:37:31,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:37:31,455 INFO L87 Difference]: Start difference. First operand 582 states and 960 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:31,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:31,490 INFO L93 Difference]: Finished difference Result 1065 states and 1762 transitions. [2023-11-29 03:37:31,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:37:31,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-11-29 03:37:31,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:31,494 INFO L225 Difference]: With dead ends: 1065 [2023-11-29 03:37:31,494 INFO L226 Difference]: Without dead ends: 585 [2023-11-29 03:37:31,495 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 03:37:31,496 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 1 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:31,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2540 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:31,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2023-11-29 03:37:31,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 584. [2023-11-29 03:37:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 1.6500857632933104) internal successors, (962), 583 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:31,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 962 transitions. [2023-11-29 03:37:31,512 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 962 transitions. Word has length 89 [2023-11-29 03:37:31,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:31,512 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 962 transitions. [2023-11-29 03:37:31,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:31,513 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 962 transitions. [2023-11-29 03:37:31,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-29 03:37:31,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:31,514 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] [2023-11-29 03:37:31,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 03:37:31,514 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:31,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:31,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1805620069, now seen corresponding path program 1 times [2023-11-29 03:37:31,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:31,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649758550] [2023-11-29 03:37:31,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:31,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:31,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:31,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:31,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649758550] [2023-11-29 03:37:31,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649758550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:31,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:31,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:37:31,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386402179] [2023-11-29 03:37:31,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:31,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:37:31,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:31,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:37:31,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:37:31,714 INFO L87 Difference]: Start difference. First operand 584 states and 962 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:31,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:31,786 INFO L93 Difference]: Finished difference Result 1554 states and 2574 transitions. [2023-11-29 03:37:31,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:37:31,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-11-29 03:37:31,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:31,793 INFO L225 Difference]: With dead ends: 1554 [2023-11-29 03:37:31,793 INFO L226 Difference]: Without dead ends: 1072 [2023-11-29 03:37:31,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:37:31,795 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 3256 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3256 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:31,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3256 Valid, 2668 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:31,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2023-11-29 03:37:31,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 599. [2023-11-29 03:37:31,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 598 states have (on average 1.648829431438127) internal successors, (986), 598 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:31,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 986 transitions. [2023-11-29 03:37:31,815 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 986 transitions. Word has length 90 [2023-11-29 03:37:31,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:31,816 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 986 transitions. [2023-11-29 03:37:31,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:31,817 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 986 transitions. [2023-11-29 03:37:31,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-11-29 03:37:31,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:31,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:31,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 03:37:31,825 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:31,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:31,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1099627728, now seen corresponding path program 1 times [2023-11-29 03:37:31,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:31,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123144425] [2023-11-29 03:37:31,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:31,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-29 03:37:33,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:33,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123144425] [2023-11-29 03:37:33,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123144425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:33,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:33,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:37:33,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211256592] [2023-11-29 03:37:33,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:33,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:37:33,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:33,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:37:33,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:37:33,252 INFO L87 Difference]: Start difference. First operand 599 states and 986 transitions. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:33,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:33,315 INFO L93 Difference]: Finished difference Result 1559 states and 2579 transitions. [2023-11-29 03:37:33,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:37:33,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 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 395 [2023-11-29 03:37:33,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:33,323 INFO L225 Difference]: With dead ends: 1559 [2023-11-29 03:37:33,323 INFO L226 Difference]: Without dead ends: 1077 [2023-11-29 03:37:33,324 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 03:37:33,325 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 787 mSDsluCounter, 2603 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 3580 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:33,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 3580 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:33,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2023-11-29 03:37:33,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 599. [2023-11-29 03:37:33,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 598 states have (on average 1.648829431438127) internal successors, (986), 598 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:33,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 986 transitions. [2023-11-29 03:37:33,345 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 986 transitions. Word has length 395 [2023-11-29 03:37:33,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:33,346 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 986 transitions. [2023-11-29 03:37:33,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:33,347 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 986 transitions. [2023-11-29 03:37:33,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-11-29 03:37:33,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:33,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:33,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 03:37:33,355 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:33,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:33,356 INFO L85 PathProgramCache]: Analyzing trace with hash 935601442, now seen corresponding path program 1 times [2023-11-29 03:37:33,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:33,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190840369] [2023-11-29 03:37:33,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:33,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 03:37:34,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:34,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190840369] [2023-11-29 03:37:34,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190840369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:34,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:34,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:37:34,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689088816] [2023-11-29 03:37:34,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:34,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:37:34,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:34,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:37:34,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:37:34,258 INFO L87 Difference]: Start difference. First operand 599 states and 986 transitions. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:34,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:34,314 INFO L93 Difference]: Finished difference Result 1561 states and 2581 transitions. [2023-11-29 03:37:34,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:37:34,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 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 396 [2023-11-29 03:37:34,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:34,322 INFO L225 Difference]: With dead ends: 1561 [2023-11-29 03:37:34,322 INFO L226 Difference]: Without dead ends: 1076 [2023-11-29 03:37:34,323 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 03:37:34,324 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 784 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 2784 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 03:37:34,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 2784 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:34,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2023-11-29 03:37:34,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 601. [2023-11-29 03:37:34,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 600 states have (on average 1.6466666666666667) internal successors, (988), 600 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:34,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 988 transitions. [2023-11-29 03:37:34,343 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 988 transitions. Word has length 396 [2023-11-29 03:37:34,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:34,344 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 988 transitions. [2023-11-29 03:37:34,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:34,344 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 988 transitions. [2023-11-29 03:37:34,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-11-29 03:37:34,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:34,352 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:34,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 03:37:34,352 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:34,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:34,353 INFO L85 PathProgramCache]: Analyzing trace with hash -643407320, now seen corresponding path program 1 times [2023-11-29 03:37:34,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:34,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574731941] [2023-11-29 03:37:34,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:34,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:35,534 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:35,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:35,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574731941] [2023-11-29 03:37:35,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574731941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:35,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:35,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:37:35,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367439558] [2023-11-29 03:37:35,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:35,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:37:35,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:35,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:37:35,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:37:35,538 INFO L87 Difference]: Start difference. First operand 601 states and 988 transitions. Second operand has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:35,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:35,932 INFO L93 Difference]: Finished difference Result 1087 states and 1792 transitions. [2023-11-29 03:37:35,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:37:35,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 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 397 [2023-11-29 03:37:35,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:35,937 INFO L225 Difference]: With dead ends: 1087 [2023-11-29 03:37:35,937 INFO L226 Difference]: Without dead ends: 601 [2023-11-29 03:37:35,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:37:35,939 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 802 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:35,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 1304 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:37:35,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2023-11-29 03:37:35,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2023-11-29 03:37:35,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 600 states have (on average 1.645) internal successors, (987), 600 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:35,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 987 transitions. [2023-11-29 03:37:35,956 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 987 transitions. Word has length 397 [2023-11-29 03:37:35,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:35,957 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 987 transitions. [2023-11-29 03:37:35,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:35,957 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 987 transitions. [2023-11-29 03:37:35,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2023-11-29 03:37:35,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:35,966 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:35,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 03:37:35,966 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:35,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:35,967 INFO L85 PathProgramCache]: Analyzing trace with hash -789791391, now seen corresponding path program 1 times [2023-11-29 03:37:35,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:35,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116446190] [2023-11-29 03:37:35,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:35,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:36,760 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 03:37:36,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:36,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116446190] [2023-11-29 03:37:36,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116446190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:36,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:36,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:37:36,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106451927] [2023-11-29 03:37:36,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:36,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:37:36,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:36,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:37:36,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:37:36,764 INFO L87 Difference]: Start difference. First operand 601 states and 987 transitions. Second operand has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:36,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:36,819 INFO L93 Difference]: Finished difference Result 1567 states and 2584 transitions. [2023-11-29 03:37:36,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:37:36,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 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 398 [2023-11-29 03:37:36,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:36,824 INFO L225 Difference]: With dead ends: 1567 [2023-11-29 03:37:36,825 INFO L226 Difference]: Without dead ends: 1077 [2023-11-29 03:37:36,825 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 03:37:36,826 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 780 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 3550 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:36,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 3550 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:36,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2023-11-29 03:37:36,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 603. [2023-11-29 03:37:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 1.6428571428571428) internal successors, (989), 602 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:36,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 989 transitions. [2023-11-29 03:37:36,839 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 989 transitions. Word has length 398 [2023-11-29 03:37:36,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:36,840 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 989 transitions. [2023-11-29 03:37:36,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:36,841 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 989 transitions. [2023-11-29 03:37:36,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-11-29 03:37:36,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:36,843 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:36,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 03:37:36,843 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:36,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:36,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1442779887, now seen corresponding path program 1 times [2023-11-29 03:37:36,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:36,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628152694] [2023-11-29 03:37:36,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:36,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:37,555 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-29 03:37:37,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:37,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628152694] [2023-11-29 03:37:37,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628152694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:37,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:37,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:37:37,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376525619] [2023-11-29 03:37:37,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:37,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:37:37,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:37,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:37:37,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:37:37,558 INFO L87 Difference]: Start difference. First operand 603 states and 989 transitions. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:37,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:37,621 INFO L93 Difference]: Finished difference Result 1573 states and 2590 transitions. [2023-11-29 03:37:37,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:37:37,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 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 399 [2023-11-29 03:37:37,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:37,628 INFO L225 Difference]: With dead ends: 1573 [2023-11-29 03:37:37,629 INFO L226 Difference]: Without dead ends: 1078 [2023-11-29 03:37:37,630 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 03:37:37,631 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 777 mSDsluCounter, 2576 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 3537 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:37,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 3537 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:37,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2023-11-29 03:37:37,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 605. [2023-11-29 03:37:37,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 604 states have (on average 1.640728476821192) internal successors, (991), 604 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:37,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 991 transitions. [2023-11-29 03:37:37,650 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 991 transitions. Word has length 399 [2023-11-29 03:37:37,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:37,651 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 991 transitions. [2023-11-29 03:37:37,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:37,652 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 991 transitions. [2023-11-29 03:37:37,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2023-11-29 03:37:37,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:37,655 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:37,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 03:37:37,656 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:37,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:37,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1582902213, now seen corresponding path program 1 times [2023-11-29 03:37:37,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:37,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303026039] [2023-11-29 03:37:37,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:37,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 03:37:38,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:38,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303026039] [2023-11-29 03:37:38,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303026039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:38,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:38,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:37:38,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632145021] [2023-11-29 03:37:38,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:38,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:37:38,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:38,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:37:38,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:37:38,428 INFO L87 Difference]: Start difference. First operand 605 states and 991 transitions. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:38,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:38,472 INFO L93 Difference]: Finished difference Result 1582 states and 2600 transitions. [2023-11-29 03:37:38,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:37:38,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 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 400 [2023-11-29 03:37:38,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:38,478 INFO L225 Difference]: With dead ends: 1582 [2023-11-29 03:37:38,479 INFO L226 Difference]: Without dead ends: 1082 [2023-11-29 03:37:38,479 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 03:37:38,480 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 772 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 2743 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 03:37:38,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 2743 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:38,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2023-11-29 03:37:38,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 612. [2023-11-29 03:37:38,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 1.6366612111292962) internal successors, (1000), 611 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:38,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 1000 transitions. [2023-11-29 03:37:38,493 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 1000 transitions. Word has length 400 [2023-11-29 03:37:38,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:38,494 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 1000 transitions. [2023-11-29 03:37:38,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:38,494 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1000 transitions. [2023-11-29 03:37:38,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2023-11-29 03:37:38,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:38,497 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:38,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 03:37:38,497 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:38,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:38,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2065480645, now seen corresponding path program 1 times [2023-11-29 03:37:38,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:38,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735480927] [2023-11-29 03:37:38,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:38,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:39,017 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-29 03:37:39,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:39,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735480927] [2023-11-29 03:37:39,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735480927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:39,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:39,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:37:39,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916623384] [2023-11-29 03:37:39,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:39,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:37:39,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:39,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:37:39,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:37:39,022 INFO L87 Difference]: Start difference. First operand 612 states and 1000 transitions. Second operand has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:39,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:39,067 INFO L93 Difference]: Finished difference Result 1574 states and 2583 transitions. [2023-11-29 03:37:39,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:37:39,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 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 401 [2023-11-29 03:37:39,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:39,074 INFO L225 Difference]: With dead ends: 1574 [2023-11-29 03:37:39,074 INFO L226 Difference]: Without dead ends: 1079 [2023-11-29 03:37:39,075 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 03:37:39,076 INFO L413 NwaCegarLoop]: 1615 mSDtfsCounter, 766 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 4066 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:39,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 4066 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:39,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2023-11-29 03:37:39,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 614. [2023-11-29 03:37:39,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 1.6345840130505709) internal successors, (1002), 613 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:39,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1002 transitions. [2023-11-29 03:37:39,088 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1002 transitions. Word has length 401 [2023-11-29 03:37:39,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:39,089 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 1002 transitions. [2023-11-29 03:37:39,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:39,089 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1002 transitions. [2023-11-29 03:37:39,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-11-29 03:37:39,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:39,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:39,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 03:37:39,092 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:39,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:39,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1734508373, now seen corresponding path program 1 times [2023-11-29 03:37:39,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:39,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113851653] [2023-11-29 03:37:39,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:39,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:39,619 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 03:37:39,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:39,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113851653] [2023-11-29 03:37:39,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113851653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:39,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:39,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:37:39,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32751613] [2023-11-29 03:37:39,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:39,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:37:39,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:39,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:37:39,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:37:39,622 INFO L87 Difference]: Start difference. First operand 614 states and 1002 transitions. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:39,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:39,667 INFO L93 Difference]: Finished difference Result 1607 states and 2629 transitions. [2023-11-29 03:37:39,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:37:39,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 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 402 [2023-11-29 03:37:39,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:39,672 INFO L225 Difference]: With dead ends: 1607 [2023-11-29 03:37:39,672 INFO L226 Difference]: Without dead ends: 1094 [2023-11-29 03:37:39,673 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 03:37:39,674 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 768 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 2727 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 03:37:39,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 2727 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:39,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2023-11-29 03:37:39,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 622. [2023-11-29 03:37:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 621 states have (on average 1.6296296296296295) internal successors, (1012), 621 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:39,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1012 transitions. [2023-11-29 03:37:39,692 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1012 transitions. Word has length 402 [2023-11-29 03:37:39,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:39,692 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 1012 transitions. [2023-11-29 03:37:39,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:39,693 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1012 transitions. [2023-11-29 03:37:39,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-11-29 03:37:39,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:39,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:39,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 03:37:39,695 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:39,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:39,696 INFO L85 PathProgramCache]: Analyzing trace with hash 2034560545, now seen corresponding path program 1 times [2023-11-29 03:37:39,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:39,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848275636] [2023-11-29 03:37:39,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:39,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:40,369 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 03:37:40,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:40,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848275636] [2023-11-29 03:37:40,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848275636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:40,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:40,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:37:40,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895378692] [2023-11-29 03:37:40,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:40,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:37:40,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:40,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:37:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:37:40,372 INFO L87 Difference]: Start difference. First operand 622 states and 1012 transitions. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:40,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:40,438 INFO L93 Difference]: Finished difference Result 1625 states and 2651 transitions. [2023-11-29 03:37:40,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:37:40,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 403 [2023-11-29 03:37:40,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:40,446 INFO L225 Difference]: With dead ends: 1625 [2023-11-29 03:37:40,447 INFO L226 Difference]: Without dead ends: 1101 [2023-11-29 03:37:40,448 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 03:37:40,449 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 768 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 2717 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 03:37:40,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 2717 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:40,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2023-11-29 03:37:40,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 626. [2023-11-29 03:37:40,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 625 states have (on average 1.6256) internal successors, (1016), 625 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:40,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 1016 transitions. [2023-11-29 03:37:40,469 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 1016 transitions. Word has length 403 [2023-11-29 03:37:40,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:40,470 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 1016 transitions. [2023-11-29 03:37:40,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:40,471 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 1016 transitions. [2023-11-29 03:37:40,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-11-29 03:37:40,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:40,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:40,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 03:37:40,475 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:40,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:40,476 INFO L85 PathProgramCache]: Analyzing trace with hash 281231473, now seen corresponding path program 1 times [2023-11-29 03:37:40,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:40,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638687173] [2023-11-29 03:37:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:40,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:41,198 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 03:37:41,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:41,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638687173] [2023-11-29 03:37:41,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638687173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:41,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:41,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:37:41,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233898802] [2023-11-29 03:37:41,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:41,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:37:41,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:41,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:37:41,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:37:41,202 INFO L87 Difference]: Start difference. First operand 626 states and 1016 transitions. Second operand has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:41,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:41,254 INFO L93 Difference]: Finished difference Result 1593 states and 2602 transitions. [2023-11-29 03:37:41,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:37:41,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 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 404 [2023-11-29 03:37:41,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:41,260 INFO L225 Difference]: With dead ends: 1593 [2023-11-29 03:37:41,261 INFO L226 Difference]: Without dead ends: 1091 [2023-11-29 03:37:41,262 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 03:37:41,262 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 760 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 4050 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:41,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 4050 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:41,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2023-11-29 03:37:41,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 628. [2023-11-29 03:37:41,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 1.6236044657097288) internal successors, (1018), 627 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:41,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1018 transitions. [2023-11-29 03:37:41,279 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1018 transitions. Word has length 404 [2023-11-29 03:37:41,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:41,280 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1018 transitions. [2023-11-29 03:37:41,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:41,281 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1018 transitions. [2023-11-29 03:37:41,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2023-11-29 03:37:41,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:41,285 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:41,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 03:37:41,285 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:41,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:41,285 INFO L85 PathProgramCache]: Analyzing trace with hash 289923593, now seen corresponding path program 1 times [2023-11-29 03:37:41,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:41,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062351289] [2023-11-29 03:37:41,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:41,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:41,988 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 03:37:41,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:41,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062351289] [2023-11-29 03:37:41,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062351289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:41,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:41,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:37:41,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63563859] [2023-11-29 03:37:41,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:41,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:37:41,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:41,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:37:41,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:37:41,992 INFO L87 Difference]: Start difference. First operand 628 states and 1018 transitions. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:42,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:42,042 INFO L93 Difference]: Finished difference Result 1649 states and 2675 transitions. [2023-11-29 03:37:42,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:37:42,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 405 [2023-11-29 03:37:42,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:42,050 INFO L225 Difference]: With dead ends: 1649 [2023-11-29 03:37:42,050 INFO L226 Difference]: Without dead ends: 1113 [2023-11-29 03:37:42,051 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 03:37:42,052 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 762 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 2701 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 03:37:42,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 2701 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:42,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2023-11-29 03:37:42,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 636. [2023-11-29 03:37:42,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 635 states have (on average 1.6188976377952755) internal successors, (1028), 635 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:42,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1028 transitions. [2023-11-29 03:37:42,073 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1028 transitions. Word has length 405 [2023-11-29 03:37:42,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:42,074 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 1028 transitions. [2023-11-29 03:37:42,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:42,074 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1028 transitions. [2023-11-29 03:37:42,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-11-29 03:37:42,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:42,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:42,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 03:37:42,078 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:42,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:42,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1655392139, now seen corresponding path program 1 times [2023-11-29 03:37:42,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:42,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529742001] [2023-11-29 03:37:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:42,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:42,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:42,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529742001] [2023-11-29 03:37:42,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529742001] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:37:42,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914245628] [2023-11-29 03:37:42,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:42,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:42,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:37:42,730 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:37:42,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:37:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:43,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 03:37:43,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:37:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 03:37:43,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:37:43,452 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 03:37:43,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914245628] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:37:43,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:37:43,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 9] total 17 [2023-11-29 03:37:43,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861452738] [2023-11-29 03:37:43,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:43,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:37:43,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:43,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:37:43,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:37:43,455 INFO L87 Difference]: Start difference. First operand 636 states and 1028 transitions. Second operand has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:43,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:43,543 INFO L93 Difference]: Finished difference Result 2145 states and 3488 transitions. [2023-11-29 03:37:43,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:37:43,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 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 406 [2023-11-29 03:37:43,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:43,553 INFO L225 Difference]: With dead ends: 2145 [2023-11-29 03:37:43,553 INFO L226 Difference]: Without dead ends: 1638 [2023-11-29 03:37:43,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 803 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:37:43,556 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 1542 mSDsluCounter, 5600 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 7988 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:43,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 7988 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:43,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2023-11-29 03:37:43,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 638. [2023-11-29 03:37:43,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 1.6169544740973312) internal successors, (1030), 637 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:43,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1030 transitions. [2023-11-29 03:37:43,578 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1030 transitions. Word has length 406 [2023-11-29 03:37:43,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:43,579 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1030 transitions. [2023-11-29 03:37:43,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:43,579 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1030 transitions. [2023-11-29 03:37:43,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-11-29 03:37:43,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:43,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:43,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:37:43,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:43,805 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:43,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:43,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2011959279, now seen corresponding path program 1 times [2023-11-29 03:37:43,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:43,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798637944] [2023-11-29 03:37:43,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:43,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:44,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:44,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798637944] [2023-11-29 03:37:44,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798637944] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:37:44,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487499210] [2023-11-29 03:37:44,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:44,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:44,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:37:44,522 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:37:44,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:37:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:44,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 1742 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 03:37:45,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:37:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 03:37:45,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:37:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-29 03:37:45,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487499210] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:37:45,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:37:45,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 9] total 17 [2023-11-29 03:37:45,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161329857] [2023-11-29 03:37:45,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:45,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:37:45,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:45,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:37:45,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:37:45,275 INFO L87 Difference]: Start difference. First operand 638 states and 1030 transitions. Second operand has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:45,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:45,390 INFO L93 Difference]: Finished difference Result 2139 states and 3485 transitions. [2023-11-29 03:37:45,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:37:45,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 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 407 [2023-11-29 03:37:45,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:45,400 INFO L225 Difference]: With dead ends: 2139 [2023-11-29 03:37:45,400 INFO L226 Difference]: Without dead ends: 1630 [2023-11-29 03:37:45,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 820 GetRequests, 805 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:37:45,402 INFO L413 NwaCegarLoop]: 2405 mSDtfsCounter, 1554 mSDsluCounter, 5634 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 8039 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:45,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 8039 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:45,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2023-11-29 03:37:45,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 638. [2023-11-29 03:37:45,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 1.6169544740973312) internal successors, (1030), 637 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:45,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1030 transitions. [2023-11-29 03:37:45,424 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1030 transitions. Word has length 407 [2023-11-29 03:37:45,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:45,425 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1030 transitions. [2023-11-29 03:37:45,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:45,425 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1030 transitions. [2023-11-29 03:37:45,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-11-29 03:37:45,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:45,429 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:45,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:37:45,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 03:37:45,630 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:45,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:45,631 INFO L85 PathProgramCache]: Analyzing trace with hash 2139830559, now seen corresponding path program 1 times [2023-11-29 03:37:45,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:45,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617695839] [2023-11-29 03:37:45,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:45,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,451 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:46,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:46,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617695839] [2023-11-29 03:37:46,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617695839] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:37:46,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398789224] [2023-11-29 03:37:46,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:46,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:46,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:37:46,457 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:37:46,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:37:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 03:37:46,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:37:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:47,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:37:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:47,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398789224] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:37:47,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:37:47,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 9] total 18 [2023-11-29 03:37:47,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826838325] [2023-11-29 03:37:47,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:37:47,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 03:37:47,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:47,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:37:47,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:37:47,943 INFO L87 Difference]: Start difference. First operand 638 states and 1030 transitions. Second operand has 18 states, 18 states have (on average 44.44444444444444) internal successors, (800), 18 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:50,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:50,102 INFO L93 Difference]: Finished difference Result 3042 states and 4883 transitions. [2023-11-29 03:37:50,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-29 03:37:50,103 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 44.44444444444444) internal successors, (800), 18 states have internal predecessors, (800), 0 states have call successors, (0), 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 408 [2023-11-29 03:37:50,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:50,116 INFO L225 Difference]: With dead ends: 3042 [2023-11-29 03:37:50,116 INFO L226 Difference]: Without dead ends: 2493 [2023-11-29 03:37:50,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 859 GetRequests, 812 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=541, Invalid=1811, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 03:37:50,120 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 10483 mSDsluCounter, 8379 mSDsCounter, 0 mSdLazyCounter, 2685 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10483 SdHoareTripleChecker+Valid, 9207 SdHoareTripleChecker+Invalid, 2728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:50,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10483 Valid, 9207 Invalid, 2728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2685 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 03:37:50,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2023-11-29 03:37:50,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 1238. [2023-11-29 03:37:50,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 1.6224737267582863) internal successors, (2007), 1237 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:50,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 2007 transitions. [2023-11-29 03:37:50,169 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 2007 transitions. Word has length 408 [2023-11-29 03:37:50,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:50,169 INFO L495 AbstractCegarLoop]: Abstraction has 1238 states and 2007 transitions. [2023-11-29 03:37:50,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 44.44444444444444) internal successors, (800), 18 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:50,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 2007 transitions. [2023-11-29 03:37:50,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-11-29 03:37:50,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:50,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:50,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:37:50,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 03:37:50,376 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:50,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:50,377 INFO L85 PathProgramCache]: Analyzing trace with hash 507268663, now seen corresponding path program 1 times [2023-11-29 03:37:50,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:50,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418544633] [2023-11-29 03:37:50,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:50,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:51,228 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:51,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:51,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418544633] [2023-11-29 03:37:51,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418544633] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:37:51,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722199332] [2023-11-29 03:37:51,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:51,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:51,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:37:51,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:37:51,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:37:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:51,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 03:37:51,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:37:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:53,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:37:54,067 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:54,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722199332] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:37:54,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:37:54,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2023-11-29 03:37:54,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053068263] [2023-11-29 03:37:54,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:37:54,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 03:37:54,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:54,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 03:37:54,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2023-11-29 03:37:54,073 INFO L87 Difference]: Start difference. First operand 1238 states and 2007 transitions. Second operand has 26 states, 26 states have (on average 42.11538461538461) internal successors, (1095), 26 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:04,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:04,975 INFO L93 Difference]: Finished difference Result 57523 states and 92542 transitions. [2023-11-29 03:39:04,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 878 states. [2023-11-29 03:39:04,976 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 42.11538461538461) internal successors, (1095), 26 states have internal predecessors, (1095), 0 states have call successors, (0), 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 409 [2023-11-29 03:39:04,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:05,050 INFO L225 Difference]: With dead ends: 57523 [2023-11-29 03:39:05,051 INFO L226 Difference]: Without dead ends: 53377 [2023-11-29 03:39:05,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1993 GetRequests, 1095 SyntacticMatches, 0 SemanticMatches, 898 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377879 ImplicationChecksByTransitivity, 45.3s TimeCoverageRelationStatistics Valid=52696, Invalid=756404, Unknown=0, NotChecked=0, Total=809100 [2023-11-29 03:39:05,167 INFO L413 NwaCegarLoop]: 3189 mSDtfsCounter, 51402 mSDsluCounter, 51294 mSDsCounter, 0 mSdLazyCounter, 29217 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51402 SdHoareTripleChecker+Valid, 54483 SdHoareTripleChecker+Invalid, 29387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 29217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:05,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51402 Valid, 54483 Invalid, 29387 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [170 Valid, 29217 Invalid, 0 Unknown, 0 Unchecked, 19.5s Time] [2023-11-29 03:39:05,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53377 states. [2023-11-29 03:39:05,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53377 to 2446. [2023-11-29 03:39:05,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2446 states, 2445 states have (on average 1.6085889570552148) internal successors, (3933), 2445 states have internal predecessors, (3933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:05,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 3933 transitions. [2023-11-29 03:39:05,449 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 3933 transitions. Word has length 409 [2023-11-29 03:39:05,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:05,449 INFO L495 AbstractCegarLoop]: Abstraction has 2446 states and 3933 transitions. [2023-11-29 03:39:05,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 42.11538461538461) internal successors, (1095), 26 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:05,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 3933 transitions. [2023-11-29 03:39:05,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2023-11-29 03:39:05,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:05,457 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:05,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:39:05,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 03:39:05,667 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:05,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:05,668 INFO L85 PathProgramCache]: Analyzing trace with hash 221174637, now seen corresponding path program 1 times [2023-11-29 03:39:05,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:05,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157145677] [2023-11-29 03:39:05,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:05,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:39:06,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:06,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157145677] [2023-11-29 03:39:06,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157145677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:39:06,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:39:06,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:39:06,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396142384] [2023-11-29 03:39:06,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:39:06,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:39:06,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:06,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:39:06,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:06,450 INFO L87 Difference]: Start difference. First operand 2446 states and 3933 transitions. Second operand has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:07,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:07,234 INFO L93 Difference]: Finished difference Result 6902 states and 11127 transitions. [2023-11-29 03:39:07,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:39:07,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 0 states have call successors, (0), 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 410 [2023-11-29 03:39:07,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:07,244 INFO L225 Difference]: With dead ends: 6902 [2023-11-29 03:39:07,244 INFO L226 Difference]: Without dead ends: 4744 [2023-11-29 03:39:07,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:07,248 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 1563 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:07,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1563 Valid, 2610 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:39:07,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4744 states. [2023-11-29 03:39:07,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4744 to 3461. [2023-11-29 03:39:07,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3461 states, 3460 states have (on average 1.5826589595375722) internal successors, (5476), 3460 states have internal predecessors, (5476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:07,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3461 states to 3461 states and 5476 transitions. [2023-11-29 03:39:07,345 INFO L78 Accepts]: Start accepts. Automaton has 3461 states and 5476 transitions. Word has length 410 [2023-11-29 03:39:07,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:07,345 INFO L495 AbstractCegarLoop]: Abstraction has 3461 states and 5476 transitions. [2023-11-29 03:39:07,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:07,346 INFO L276 IsEmpty]: Start isEmpty. Operand 3461 states and 5476 transitions. [2023-11-29 03:39:07,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2023-11-29 03:39:07,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:07,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:07,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 03:39:07,357 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:07,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:07,358 INFO L85 PathProgramCache]: Analyzing trace with hash 633528836, now seen corresponding path program 1 times [2023-11-29 03:39:07,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:07,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465210689] [2023-11-29 03:39:07,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:07,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:39:08,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:08,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465210689] [2023-11-29 03:39:08,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465210689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:39:08,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:39:08,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:39:08,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116501074] [2023-11-29 03:39:08,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:39:08,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:39:08,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:08,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:39:08,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:08,248 INFO L87 Difference]: Start difference. First operand 3461 states and 5476 transitions. Second operand has 6 states, 6 states have (on average 68.5) internal successors, (411), 6 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:08,856 INFO L93 Difference]: Finished difference Result 9717 states and 15426 transitions. [2023-11-29 03:39:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:39:08,856 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.5) internal successors, (411), 6 states have internal predecessors, (411), 0 states have call successors, (0), 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 411 [2023-11-29 03:39:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:08,862 INFO L225 Difference]: With dead ends: 9717 [2023-11-29 03:39:08,862 INFO L226 Difference]: Without dead ends: 6714 [2023-11-29 03:39:08,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:08,866 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 2226 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2226 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:08,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2226 Valid, 2612 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:39:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6714 states. [2023-11-29 03:39:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6714 to 5398. [2023-11-29 03:39:08,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5398 states, 5397 states have (on average 1.5577172503242542) internal successors, (8407), 5397 states have internal predecessors, (8407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:08,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5398 states to 5398 states and 8407 transitions. [2023-11-29 03:39:08,967 INFO L78 Accepts]: Start accepts. Automaton has 5398 states and 8407 transitions. Word has length 411 [2023-11-29 03:39:08,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:08,968 INFO L495 AbstractCegarLoop]: Abstraction has 5398 states and 8407 transitions. [2023-11-29 03:39:08,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.5) internal successors, (411), 6 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:08,968 INFO L276 IsEmpty]: Start isEmpty. Operand 5398 states and 8407 transitions. [2023-11-29 03:39:08,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-11-29 03:39:08,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:08,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:08,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 03:39:08,979 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:08,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:08,979 INFO L85 PathProgramCache]: Analyzing trace with hash 336013567, now seen corresponding path program 1 times [2023-11-29 03:39:08,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:08,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109616558] [2023-11-29 03:39:08,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:08,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:09,923 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:39:09,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:09,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109616558] [2023-11-29 03:39:09,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109616558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:39:09,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:39:09,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:39:09,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698934936] [2023-11-29 03:39:09,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:39:09,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:39:09,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:09,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:39:09,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:09,926 INFO L87 Difference]: Start difference. First operand 5398 states and 8407 transitions. Second operand has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:10,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:10,564 INFO L93 Difference]: Finished difference Result 15098 states and 23609 transitions. [2023-11-29 03:39:10,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:39:10,565 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 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 412 [2023-11-29 03:39:10,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:10,572 INFO L225 Difference]: With dead ends: 15098 [2023-11-29 03:39:10,572 INFO L226 Difference]: Without dead ends: 10468 [2023-11-29 03:39:10,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:10,578 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 1547 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 2614 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:10,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 2614 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:39:10,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10468 states. [2023-11-29 03:39:10,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10468 to 9068. [2023-11-29 03:39:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9068 states, 9067 states have (on average 1.5362302856512629) internal successors, (13929), 9067 states have internal predecessors, (13929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:10,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9068 states to 9068 states and 13929 transitions. [2023-11-29 03:39:10,689 INFO L78 Accepts]: Start accepts. Automaton has 9068 states and 13929 transitions. Word has length 412 [2023-11-29 03:39:10,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:10,689 INFO L495 AbstractCegarLoop]: Abstraction has 9068 states and 13929 transitions. [2023-11-29 03:39:10,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:10,690 INFO L276 IsEmpty]: Start isEmpty. Operand 9068 states and 13929 transitions. [2023-11-29 03:39:10,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-11-29 03:39:10,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:10,707 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:10,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 03:39:10,707 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:10,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:10,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1820162556, now seen corresponding path program 1 times [2023-11-29 03:39:10,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:10,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613474191] [2023-11-29 03:39:10,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:10,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:11,430 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:39:11,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:11,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613474191] [2023-11-29 03:39:11,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613474191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:39:11,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:39:11,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:39:11,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013029676] [2023-11-29 03:39:11,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:39:11,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:39:11,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:11,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:39:11,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:11,433 INFO L87 Difference]: Start difference. First operand 9068 states and 13929 transitions. Second operand has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 6 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:12,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:12,147 INFO L93 Difference]: Finished difference Result 25308 states and 39055 transitions. [2023-11-29 03:39:12,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:39:12,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 6 states have internal predecessors, (413), 0 states have call successors, (0), 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 413 [2023-11-29 03:39:12,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:12,160 INFO L225 Difference]: With dead ends: 25308 [2023-11-29 03:39:12,160 INFO L226 Difference]: Without dead ends: 17568 [2023-11-29 03:39:12,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:12,169 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 1505 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:12,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 2663 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:39:12,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17568 states. [2023-11-29 03:39:12,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17568 to 16129. [2023-11-29 03:39:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16129 states, 16128 states have (on average 1.5198412698412698) internal successors, (24512), 16128 states have internal predecessors, (24512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16129 states to 16129 states and 24512 transitions. [2023-11-29 03:39:12,342 INFO L78 Accepts]: Start accepts. Automaton has 16129 states and 24512 transitions. Word has length 413 [2023-11-29 03:39:12,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:12,343 INFO L495 AbstractCegarLoop]: Abstraction has 16129 states and 24512 transitions. [2023-11-29 03:39:12,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 6 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:12,343 INFO L276 IsEmpty]: Start isEmpty. Operand 16129 states and 24512 transitions. [2023-11-29 03:39:12,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-11-29 03:39:12,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:12,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:12,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 03:39:12,364 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:12,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:12,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1119012531, now seen corresponding path program 1 times [2023-11-29 03:39:12,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:12,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191186983] [2023-11-29 03:39:12,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:12,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:13,126 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:39:13,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:13,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191186983] [2023-11-29 03:39:13,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191186983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:39:13,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:39:13,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:39:13,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792358967] [2023-11-29 03:39:13,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:39:13,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:39:13,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:13,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:39:13,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:13,129 INFO L87 Difference]: Start difference. First operand 16129 states and 24512 transitions. Second operand has 6 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:13,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:13,848 INFO L93 Difference]: Finished difference Result 45011 states and 68764 transitions. [2023-11-29 03:39:13,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:39:13,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 0 states have call successors, (0), 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 414 [2023-11-29 03:39:13,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:13,877 INFO L225 Difference]: With dead ends: 45011 [2023-11-29 03:39:13,877 INFO L226 Difference]: Without dead ends: 31210 [2023-11-29 03:39:13,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:13,891 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 2097 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2097 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:13,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2097 Valid, 2666 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:39:13,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31210 states. [2023-11-29 03:39:14,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31210 to 29327. [2023-11-29 03:39:14,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29327 states, 29326 states have (on average 1.50508081565846) internal successors, (44138), 29326 states have internal predecessors, (44138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29327 states to 29327 states and 44138 transitions. [2023-11-29 03:39:14,243 INFO L78 Accepts]: Start accepts. Automaton has 29327 states and 44138 transitions. Word has length 414 [2023-11-29 03:39:14,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:14,243 INFO L495 AbstractCegarLoop]: Abstraction has 29327 states and 44138 transitions. [2023-11-29 03:39:14,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:14,244 INFO L276 IsEmpty]: Start isEmpty. Operand 29327 states and 44138 transitions. [2023-11-29 03:39:14,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-11-29 03:39:14,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:14,278 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:14,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 03:39:14,278 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:14,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:14,279 INFO L85 PathProgramCache]: Analyzing trace with hash 98931572, now seen corresponding path program 1 times [2023-11-29 03:39:14,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:14,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836672626] [2023-11-29 03:39:14,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:14,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:15,012 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:39:15,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:15,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836672626] [2023-11-29 03:39:15,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836672626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:39:15,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:39:15,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:39:15,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078897171] [2023-11-29 03:39:15,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:39:15,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:39:15,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:15,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:39:15,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:15,015 INFO L87 Difference]: Start difference. First operand 29327 states and 44138 transitions. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:15,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:15,803 INFO L93 Difference]: Finished difference Result 81885 states and 123962 transitions. [2023-11-29 03:39:15,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:39:15,803 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 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 415 [2023-11-29 03:39:15,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:15,848 INFO L225 Difference]: With dead ends: 81885 [2023-11-29 03:39:15,848 INFO L226 Difference]: Without dead ends: 56646 [2023-11-29 03:39:15,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:15,872 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 1490 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:15,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 2620 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:39:15,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56646 states. [2023-11-29 03:39:16,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56646 to 53839. [2023-11-29 03:39:16,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53839 states, 53838 states have (on average 1.4905828596901816) internal successors, (80250), 53838 states have internal predecessors, (80250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:16,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53839 states to 53839 states and 80250 transitions. [2023-11-29 03:39:16,469 INFO L78 Accepts]: Start accepts. Automaton has 53839 states and 80250 transitions. Word has length 415 [2023-11-29 03:39:16,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:16,470 INFO L495 AbstractCegarLoop]: Abstraction has 53839 states and 80250 transitions. [2023-11-29 03:39:16,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:16,470 INFO L276 IsEmpty]: Start isEmpty. Operand 53839 states and 80250 transitions. [2023-11-29 03:39:16,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-11-29 03:39:16,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:16,524 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:16,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 03:39:16,525 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:16,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:16,525 INFO L85 PathProgramCache]: Analyzing trace with hash -27068053, now seen corresponding path program 1 times [2023-11-29 03:39:16,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:16,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169506777] [2023-11-29 03:39:16,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:16,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:17,346 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:39:17,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:17,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169506777] [2023-11-29 03:39:17,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169506777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:39:17,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:39:17,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:39:17,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56788567] [2023-11-29 03:39:17,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:39:17,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:39:17,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:17,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:39:17,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:17,350 INFO L87 Difference]: Start difference. First operand 53839 states and 80250 transitions. Second operand has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:18,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:18,307 INFO L93 Difference]: Finished difference Result 103957 states and 158318 transitions. [2023-11-29 03:39:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:39:18,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 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 416 [2023-11-29 03:39:18,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:18,354 INFO L225 Difference]: With dead ends: 103957 [2023-11-29 03:39:18,355 INFO L226 Difference]: Without dead ends: 57246 [2023-11-29 03:39:18,379 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 03:39:18,379 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 1439 mSDsluCounter, 2428 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 3323 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:18,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 3323 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:39:18,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57246 states. [2023-11-29 03:39:18,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57246 to 56464. [2023-11-29 03:39:18,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56464 states, 56463 states have (on average 1.498485734020509) internal successors, (84609), 56463 states have internal predecessors, (84609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:18,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56464 states to 56464 states and 84609 transitions. [2023-11-29 03:39:18,940 INFO L78 Accepts]: Start accepts. Automaton has 56464 states and 84609 transitions. Word has length 416 [2023-11-29 03:39:18,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:18,940 INFO L495 AbstractCegarLoop]: Abstraction has 56464 states and 84609 transitions. [2023-11-29 03:39:18,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:18,940 INFO L276 IsEmpty]: Start isEmpty. Operand 56464 states and 84609 transitions. [2023-11-29 03:39:19,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-11-29 03:39:19,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:19,006 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:19,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 03:39:19,006 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:19,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:19,006 INFO L85 PathProgramCache]: Analyzing trace with hash 482979516, now seen corresponding path program 1 times [2023-11-29 03:39:19,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:19,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331005770] [2023-11-29 03:39:19,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:19,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,815 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:39:19,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:19,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331005770] [2023-11-29 03:39:19,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331005770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:39:19,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:39:19,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:39:19,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500620580] [2023-11-29 03:39:19,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:39:19,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:39:19,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:19,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:39:19,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:19,818 INFO L87 Difference]: Start difference. First operand 56464 states and 84609 transitions. Second operand has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:20,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:20,726 INFO L93 Difference]: Finished difference Result 112636 states and 172697 transitions. [2023-11-29 03:39:20,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:39:20,726 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 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 416 [2023-11-29 03:39:20,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:20,778 INFO L225 Difference]: With dead ends: 112636 [2023-11-29 03:39:20,778 INFO L226 Difference]: Without dead ends: 63300 [2023-11-29 03:39:20,806 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 03:39:20,807 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 1433 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 3299 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:20,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 3299 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:39:20,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63300 states. [2023-11-29 03:39:21,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63300 to 62605. [2023-11-29 03:39:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62605 states, 62604 states have (on average 1.5137051945562583) internal successors, (94764), 62604 states have internal predecessors, (94764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:21,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62605 states to 62605 states and 94764 transitions. [2023-11-29 03:39:21,461 INFO L78 Accepts]: Start accepts. Automaton has 62605 states and 94764 transitions. Word has length 416 [2023-11-29 03:39:21,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:21,461 INFO L495 AbstractCegarLoop]: Abstraction has 62605 states and 94764 transitions. [2023-11-29 03:39:21,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:21,462 INFO L276 IsEmpty]: Start isEmpty. Operand 62605 states and 94764 transitions. [2023-11-29 03:39:21,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-11-29 03:39:21,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:21,517 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:21,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 03:39:21,517 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:21,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:21,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1901544561, now seen corresponding path program 1 times [2023-11-29 03:39:21,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:21,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755647654] [2023-11-29 03:39:21,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:21,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:39:22,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:22,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755647654] [2023-11-29 03:39:22,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755647654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:39:22,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:39:22,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:39:22,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985729981] [2023-11-29 03:39:22,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:39:22,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:39:22,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:22,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:39:22,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:22,600 INFO L87 Difference]: Start difference. First operand 62605 states and 94764 transitions. Second operand has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:23,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:23,474 INFO L93 Difference]: Finished difference Result 127207 states and 196904 transitions. [2023-11-29 03:39:23,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:39:23,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 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 416 [2023-11-29 03:39:23,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:23,530 INFO L225 Difference]: With dead ends: 127207 [2023-11-29 03:39:23,530 INFO L226 Difference]: Without dead ends: 71730 [2023-11-29 03:39:23,559 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 03:39:23,560 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 1423 mSDsluCounter, 2382 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 3254 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:23,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 3254 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:39:23,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71730 states. [2023-11-29 03:39:24,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71730 to 70900. [2023-11-29 03:39:24,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70900 states, 70899 states have (on average 1.53205263826006) internal successors, (108621), 70899 states have internal predecessors, (108621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:24,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70900 states to 70900 states and 108621 transitions. [2023-11-29 03:39:24,457 INFO L78 Accepts]: Start accepts. Automaton has 70900 states and 108621 transitions. Word has length 416 [2023-11-29 03:39:24,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:24,457 INFO L495 AbstractCegarLoop]: Abstraction has 70900 states and 108621 transitions. [2023-11-29 03:39:24,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:24,457 INFO L276 IsEmpty]: Start isEmpty. Operand 70900 states and 108621 transitions. [2023-11-29 03:39:24,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-11-29 03:39:24,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:24,544 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:24,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-29 03:39:24,545 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:24,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:24,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1132468514, now seen corresponding path program 1 times [2023-11-29 03:39:24,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:24,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828060822] [2023-11-29 03:39:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:24,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:39:25,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:25,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828060822] [2023-11-29 03:39:25,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828060822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:39:25,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:39:25,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:39:25,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148915231] [2023-11-29 03:39:25,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:39:25,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:39:25,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:25,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:39:25,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:25,486 INFO L87 Difference]: Start difference. First operand 70900 states and 108621 transitions. Second operand has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:26,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:26,545 INFO L93 Difference]: Finished difference Result 138796 states and 216083 transitions. [2023-11-29 03:39:26,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:39:26,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 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 416 [2023-11-29 03:39:26,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:26,588 INFO L225 Difference]: With dead ends: 138796 [2023-11-29 03:39:26,588 INFO L226 Difference]: Without dead ends: 75024 [2023-11-29 03:39:26,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:26,601 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 1401 mSDsluCounter, 2317 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 3158 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:26,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 3158 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:39:26,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75024 states. [2023-11-29 03:39:27,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75024 to 73555. [2023-11-29 03:39:27,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73555 states, 73554 states have (on average 1.5362590749653315) internal successors, (112998), 73554 states have internal predecessors, (112998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:27,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73555 states to 73555 states and 112998 transitions. [2023-11-29 03:39:27,444 INFO L78 Accepts]: Start accepts. Automaton has 73555 states and 112998 transitions. Word has length 416 [2023-11-29 03:39:27,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:27,444 INFO L495 AbstractCegarLoop]: Abstraction has 73555 states and 112998 transitions. [2023-11-29 03:39:27,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:27,444 INFO L276 IsEmpty]: Start isEmpty. Operand 73555 states and 112998 transitions. [2023-11-29 03:39:27,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-11-29 03:39:27,505 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:27,505 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:27,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-29 03:39:27,505 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:27,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:27,506 INFO L85 PathProgramCache]: Analyzing trace with hash -764082423, now seen corresponding path program 1 times [2023-11-29 03:39:27,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:27,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062972392] [2023-11-29 03:39:27,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:27,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:28,366 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:39:28,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:28,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062972392] [2023-11-29 03:39:28,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062972392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:39:28,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:39:28,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:39:28,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435224462] [2023-11-29 03:39:28,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:39:28,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:39:28,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:28,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:39:28,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:28,369 INFO L87 Difference]: Start difference. First operand 73555 states and 112998 transitions. Second operand has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:29,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:29,382 INFO L93 Difference]: Finished difference Result 147433 states and 230366 transitions. [2023-11-29 03:39:29,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:39:29,383 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 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 416 [2023-11-29 03:39:29,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:29,457 INFO L225 Difference]: With dead ends: 147433 [2023-11-29 03:39:29,457 INFO L226 Difference]: Without dead ends: 81006 [2023-11-29 03:39:29,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:29,498 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 1398 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:29,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 2934 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:39:29,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81006 states. [2023-11-29 03:39:30,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81006 to 80044. [2023-11-29 03:39:30,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80044 states, 80043 states have (on average 1.5450320452756643) internal successors, (123669), 80043 states have internal predecessors, (123669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:30,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80044 states to 80044 states and 123669 transitions. [2023-11-29 03:39:30,553 INFO L78 Accepts]: Start accepts. Automaton has 80044 states and 123669 transitions. Word has length 416 [2023-11-29 03:39:30,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:30,554 INFO L495 AbstractCegarLoop]: Abstraction has 80044 states and 123669 transitions. [2023-11-29 03:39:30,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:30,554 INFO L276 IsEmpty]: Start isEmpty. Operand 80044 states and 123669 transitions. [2023-11-29 03:39:30,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-11-29 03:39:30,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:30,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:30,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-29 03:39:30,838 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:30,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:30,838 INFO L85 PathProgramCache]: Analyzing trace with hash 679235712, now seen corresponding path program 1 times [2023-11-29 03:39:30,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:30,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96930474] [2023-11-29 03:39:30,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:30,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:31,673 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:39:31,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:31,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96930474] [2023-11-29 03:39:31,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96930474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:39:31,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:39:31,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:39:31,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119003812] [2023-11-29 03:39:31,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:39:31,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:39:31,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:31,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:39:31,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:31,675 INFO L87 Difference]: Start difference. First operand 80044 states and 123669 transitions. Second operand has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:32,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:32,696 INFO L93 Difference]: Finished difference Result 163732 states and 257051 transitions. [2023-11-29 03:39:32,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:39:32,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 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 416 [2023-11-29 03:39:32,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:32,759 INFO L225 Difference]: With dead ends: 163732 [2023-11-29 03:39:32,759 INFO L226 Difference]: Without dead ends: 90816 [2023-11-29 03:39:32,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:39:32,779 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 1727 mSDsluCounter, 2271 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:32,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 3089 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:39:32,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90816 states. [2023-11-29 03:39:33,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90816 to 88459. [2023-11-29 03:39:33,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88459 states, 88458 states have (on average 1.5555178728888286) internal successors, (137598), 88458 states have internal predecessors, (137598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:33,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88459 states to 88459 states and 137598 transitions. [2023-11-29 03:39:33,925 INFO L78 Accepts]: Start accepts. Automaton has 88459 states and 137598 transitions. Word has length 416 [2023-11-29 03:39:33,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:33,925 INFO L495 AbstractCegarLoop]: Abstraction has 88459 states and 137598 transitions. [2023-11-29 03:39:33,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:33,926 INFO L276 IsEmpty]: Start isEmpty. Operand 88459 states and 137598 transitions. [2023-11-29 03:39:34,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-11-29 03:39:34,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:34,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:34,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-29 03:39:34,001 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:34,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:34,002 INFO L85 PathProgramCache]: Analyzing trace with hash -236869257, now seen corresponding path program 1 times [2023-11-29 03:39:34,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:34,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574569842] [2023-11-29 03:39:34,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:34,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:34,971 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:39:34,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:34,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574569842] [2023-11-29 03:39:34,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574569842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:39:34,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:39:34,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:39:34,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625390293] [2023-11-29 03:39:34,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:39:34,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:39:34,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:34,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:39:34,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:39:34,973 INFO L87 Difference]: Start difference. First operand 88459 states and 137598 transitions. Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:35,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:35,702 INFO L93 Difference]: Finished difference Result 169790 states and 267370 transitions. [2023-11-29 03:39:35,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:39:35,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 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 416 [2023-11-29 03:39:35,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:35,766 INFO L225 Difference]: With dead ends: 169790 [2023-11-29 03:39:35,766 INFO L226 Difference]: Without dead ends: 88459 [2023-11-29 03:39:35,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:39:35,797 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 719 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:35,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1304 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:39:35,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88459 states. [2023-11-29 03:39:36,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88459 to 88459. [2023-11-29 03:39:36,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88459 states, 88458 states have (on average 1.5533473512853557) internal successors, (137406), 88458 states have internal predecessors, (137406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88459 states to 88459 states and 137406 transitions. [2023-11-29 03:39:36,822 INFO L78 Accepts]: Start accepts. Automaton has 88459 states and 137406 transitions. Word has length 416 [2023-11-29 03:39:36,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:36,822 INFO L495 AbstractCegarLoop]: Abstraction has 88459 states and 137406 transitions. [2023-11-29 03:39:36,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:36,823 INFO L276 IsEmpty]: Start isEmpty. Operand 88459 states and 137406 transitions. [2023-11-29 03:39:36,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-11-29 03:39:36,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:36,923 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:36,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-29 03:39:36,924 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:36,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:36,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1807823284, now seen corresponding path program 1 times [2023-11-29 03:39:36,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:36,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269544279] [2023-11-29 03:39:36,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:36,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:38,174 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 41 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:39:38,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:38,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269544279] [2023-11-29 03:39:38,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269544279] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:39:38,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558024017] [2023-11-29 03:39:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:38,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:39:38,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:39:38,176 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:39:38,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:39:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:38,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-29 03:39:38,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:39:39,630 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:39:39,630 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:39:39,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558024017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:39:39,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:39:39,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 17 [2023-11-29 03:39:39,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546176633] [2023-11-29 03:39:39,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:39:39,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 03:39:39,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:39,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 03:39:39,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:39:39,633 INFO L87 Difference]: Start difference. First operand 88459 states and 137406 transitions. Second operand has 11 states, 11 states have (on average 37.90909090909091) internal successors, (417), 11 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:43,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:43,240 INFO L93 Difference]: Finished difference Result 299596 states and 473615 transitions. [2023-11-29 03:39:43,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 03:39:43,240 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 37.90909090909091) internal successors, (417), 11 states have internal predecessors, (417), 0 states have call successors, (0), 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 417 [2023-11-29 03:39:43,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:43,424 INFO L225 Difference]: With dead ends: 299596 [2023-11-29 03:39:43,424 INFO L226 Difference]: Without dead ends: 218265 [2023-11-29 03:39:43,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2023-11-29 03:39:43,459 INFO L413 NwaCegarLoop]: 2743 mSDtfsCounter, 3797 mSDsluCounter, 16768 mSDsCounter, 0 mSdLazyCounter, 5769 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3797 SdHoareTripleChecker+Valid, 19511 SdHoareTripleChecker+Invalid, 5775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 5769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:43,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3797 Valid, 19511 Invalid, 5775 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 5769 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 03:39:43,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218265 states. [2023-11-29 03:39:45,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218265 to 110891. [2023-11-29 03:39:45,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110891 states, 110890 states have (on average 1.5566958246911353) internal successors, (172622), 110890 states have internal predecessors, (172622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:45,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110891 states to 110891 states and 172622 transitions. [2023-11-29 03:39:45,658 INFO L78 Accepts]: Start accepts. Automaton has 110891 states and 172622 transitions. Word has length 417 [2023-11-29 03:39:45,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:45,659 INFO L495 AbstractCegarLoop]: Abstraction has 110891 states and 172622 transitions. [2023-11-29 03:39:45,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 37.90909090909091) internal successors, (417), 11 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:39:45,659 INFO L276 IsEmpty]: Start isEmpty. Operand 110891 states and 172622 transitions. [2023-11-29 03:39:45,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-11-29 03:39:45,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:45,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:45,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:39:45,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 03:39:45,957 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:45,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:45,957 INFO L85 PathProgramCache]: Analyzing trace with hash -934200950, now seen corresponding path program 1 times [2023-11-29 03:39:45,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:45,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363037062] [2023-11-29 03:39:45,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:45,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 41 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:39:47,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:47,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363037062] [2023-11-29 03:39:47,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363037062] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:39:47,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389696429] [2023-11-29 03:39:47,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:47,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:39:47,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:39:47,025 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:39:47,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:39:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:47,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 03:39:47,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:39:49,440 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:39:49,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:39:51,128 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:39:51,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389696429] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:39:51,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:39:51,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14, 15] total 31 [2023-11-29 03:39:51,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432005259] [2023-11-29 03:39:51,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:39:51,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 03:39:51,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:51,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 03:39:51,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2023-11-29 03:39:51,131 INFO L87 Difference]: Start difference. First operand 110891 states and 172622 transitions. Second operand has 31 states, 31 states have (on average 37.16129032258065) internal successors, (1152), 31 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:41:39,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:41:39,120 INFO L93 Difference]: Finished difference Result 6403888 states and 10193493 transitions. [2023-11-29 03:41:39,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 886 states. [2023-11-29 03:41:39,121 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 37.16129032258065) internal successors, (1152), 31 states have internal predecessors, (1152), 0 states have call successors, (0), 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 417 [2023-11-29 03:41:39,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:41:46,576 INFO L225 Difference]: With dead ends: 6403888 [2023-11-29 03:41:46,576 INFO L226 Difference]: Without dead ends: 6301509 [2023-11-29 03:41:47,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1793 GetRequests, 883 SyntacticMatches, 0 SemanticMatches, 910 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385528 ImplicationChecksByTransitivity, 44.6s TimeCoverageRelationStatistics Valid=60602, Invalid=770230, Unknown=0, NotChecked=0, Total=830832 [2023-11-29 03:41:47,418 INFO L413 NwaCegarLoop]: 4982 mSDtfsCounter, 71861 mSDsluCounter, 100547 mSDsCounter, 0 mSdLazyCounter, 42290 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71861 SdHoareTripleChecker+Valid, 105529 SdHoareTripleChecker+Invalid, 42324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 42290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:41:47,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71861 Valid, 105529 Invalid, 42324 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [34 Valid, 42290 Invalid, 0 Unknown, 0 Unchecked, 31.3s Time] [2023-11-29 03:41:52,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6301509 states. [2023-11-29 03:42:21,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6301509 to 235987. [2023-11-29 03:42:22,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235987 states, 235986 states have (on average 1.5435237683591398) internal successors, (364250), 235986 states have internal predecessors, (364250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:22,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235987 states to 235987 states and 364250 transitions. [2023-11-29 03:42:22,664 INFO L78 Accepts]: Start accepts. Automaton has 235987 states and 364250 transitions. Word has length 417 [2023-11-29 03:42:22,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:22,664 INFO L495 AbstractCegarLoop]: Abstraction has 235987 states and 364250 transitions. [2023-11-29 03:42:22,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 37.16129032258065) internal successors, (1152), 31 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:22,664 INFO L276 IsEmpty]: Start isEmpty. Operand 235987 states and 364250 transitions. [2023-11-29 03:42:22,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-11-29 03:42:22,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:22,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:22,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:42:23,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 03:42:23,082 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:42:23,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:23,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1675352050, now seen corresponding path program 1 times [2023-11-29 03:42:23,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:23,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71811645] [2023-11-29 03:42:23,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:23,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:24,363 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:24,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:24,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71811645] [2023-11-29 03:42:24,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71811645] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:42:24,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548875273] [2023-11-29 03:42:24,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:24,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:24,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:24,365 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:24,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:42:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:24,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 03:42:24,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:26,541 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:26,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:42:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 39 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:27,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548875273] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:42:27,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:42:27,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16, 11] total 31 [2023-11-29 03:42:27,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294472155] [2023-11-29 03:42:27,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:42:27,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 03:42:27,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:27,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 03:42:27,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2023-11-29 03:42:27,830 INFO L87 Difference]: Start difference. First operand 235987 states and 364250 transitions. Second operand has 31 states, 31 states have (on average 37.67741935483871) internal successors, (1168), 31 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:55,202 INFO L93 Difference]: Finished difference Result 2774835 states and 4285634 transitions. [2023-11-29 03:42:55,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 287 states. [2023-11-29 03:42:55,203 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 37.67741935483871) internal successors, (1168), 31 states have internal predecessors, (1168), 0 states have call successors, (0), 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 417 [2023-11-29 03:42:55,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:57,897 INFO L225 Difference]: With dead ends: 2774835 [2023-11-29 03:42:57,897 INFO L226 Difference]: Without dead ends: 2555817 [2023-11-29 03:42:58,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1171 GetRequests, 857 SyntacticMatches, 0 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42172 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=10535, Invalid=89005, Unknown=0, NotChecked=0, Total=99540 [2023-11-29 03:42:58,251 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 147922 mSDsluCounter, 12952 mSDsCounter, 0 mSdLazyCounter, 5527 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147922 SdHoareTripleChecker+Valid, 13628 SdHoareTripleChecker+Invalid, 5673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 5527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:58,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147922 Valid, 13628 Invalid, 5673 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [146 Valid, 5527 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-29 03:42:59,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555817 states. [2023-11-29 03:43:12,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555817 to 556571. [2023-11-29 03:43:12,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556571 states, 556570 states have (on average 1.5243257811236681) internal successors, (848394), 556570 states have internal predecessors, (848394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:14,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556571 states to 556571 states and 848394 transitions. [2023-11-29 03:43:14,316 INFO L78 Accepts]: Start accepts. Automaton has 556571 states and 848394 transitions. Word has length 417 [2023-11-29 03:43:14,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:14,317 INFO L495 AbstractCegarLoop]: Abstraction has 556571 states and 848394 transitions. [2023-11-29 03:43:14,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 37.67741935483871) internal successors, (1168), 31 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:14,317 INFO L276 IsEmpty]: Start isEmpty. Operand 556571 states and 848394 transitions. [2023-11-29 03:43:14,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-11-29 03:43:14,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:14,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:14,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:43:15,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 03:43:15,080 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:43:15,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:15,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1919423827, now seen corresponding path program 1 times [2023-11-29 03:43:15,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:15,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549311239] [2023-11-29 03:43:15,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:15,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:16,447 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 35 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:43:16,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:16,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549311239] [2023-11-29 03:43:16,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549311239] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:43:16,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846242354] [2023-11-29 03:43:16,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:16,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:16,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:16,449 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:16,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ecf596-fa4d-4192-958f-a09b0bfaac86/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:43:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:16,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 03:43:16,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 32 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:43:17,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:43:19,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846242354] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:43:19,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:43:19,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15, 12] total 28 [2023-11-29 03:43:19,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421484446] [2023-11-29 03:43:19,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:43:19,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 03:43:19,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:19,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 03:43:19,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2023-11-29 03:43:19,705 INFO L87 Difference]: Start difference. First operand 556571 states and 848394 transitions. Second operand has 28 states, 28 states have (on average 36.464285714285715) internal successors, (1021), 28 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)