./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/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_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 695c99bbb2ee4f955d16991d39d1ac6b5b32c36e8696260349d8fb0dae4c113f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:11:08,921 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:11:08,981 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:11:08,986 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:11:08,987 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:11:09,009 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:11:09,010 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:11:09,011 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:11:09,011 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:11:09,012 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:11:09,013 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:11:09,013 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:11:09,014 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:11:09,014 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:11:09,015 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:11:09,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:11:09,016 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:11:09,016 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:11:09,017 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:11:09,017 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:11:09,018 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:11:09,018 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:11:09,018 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:11:09,019 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:11:09,019 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:11:09,020 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:11:09,020 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:11:09,020 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:11:09,021 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:11:09,021 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:11:09,021 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:11:09,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:11:09,022 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:11:09,022 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:11:09,022 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:11:09,023 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:11:09,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:11:09,023 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:11:09,023 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:11:09,023 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:11:09,023 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:11:09,024 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:11:09,024 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_687a10de-6386-4fc6-b030-26af1bdcfc88/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 695c99bbb2ee4f955d16991d39d1ac6b5b32c36e8696260349d8fb0dae4c113f [2023-11-29 00:11:09,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:11:09,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:11:09,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:11:09,286 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:11:09,287 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:11:09,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-11-29 00:11:12,074 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:11:12,306 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:11:12,307 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-11-29 00:11:12,325 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/data/4426eef21/897976a92998463fab4f8a0b0e36dddb/FLAG2b77ad620 [2023-11-29 00:11:12,339 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/data/4426eef21/897976a92998463fab4f8a0b0e36dddb [2023-11-29 00:11:12,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:11:12,344 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:11:12,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:11:12,345 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:11:12,351 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:11:12,352 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:11:12" (1/1) ... [2023-11-29 00:11:12,353 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@307757fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:11:12, skipping insertion in model container [2023-11-29 00:11:12,353 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:11:12" (1/1) ... [2023-11-29 00:11:12,429 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:11:12,678 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_687a10de-6386-4fc6-b030-26af1bdcfc88/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[12834,12847] [2023-11-29 00:11:12,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:11:12,770 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:11:12,850 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_687a10de-6386-4fc6-b030-26af1bdcfc88/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[12834,12847] [2023-11-29 00:11:12,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:11:12,913 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:11:12,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:11:12 WrapperNode [2023-11-29 00:11:12,913 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:11:12,914 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:11:12,914 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:11:12,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:11:12,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:11:12" (1/1) ... [2023-11-29 00:11:12,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:11:12" (1/1) ... [2023-11-29 00:11:12,987 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1347 [2023-11-29 00:11:12,988 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:11:12,988 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:11:12,989 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:11:12,989 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:11:13,001 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:11:12" (1/1) ... [2023-11-29 00:11:13,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:11:12" (1/1) ... [2023-11-29 00:11:13,009 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:11:12" (1/1) ... [2023-11-29 00:11:13,036 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 00:11:13,036 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:11:12" (1/1) ... [2023-11-29 00:11:13,036 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:11:12" (1/1) ... [2023-11-29 00:11:13,055 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:11:12" (1/1) ... [2023-11-29 00:11:13,067 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:11:12" (1/1) ... [2023-11-29 00:11:13,072 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:11:12" (1/1) ... [2023-11-29 00:11:13,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:11:12" (1/1) ... [2023-11-29 00:11:13,090 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:11:13,091 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:11:13,091 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:11:13,091 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:11:13,092 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:11:12" (1/1) ... [2023-11-29 00:11:13,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:11:13,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:11:13,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:11:13,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:11:13,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:11:13,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:11:13,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:11:13,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:11:13,314 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:11:13,315 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:11:14,224 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:11:14,271 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:11:14,272 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 00:11:14,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:11:14 BoogieIcfgContainer [2023-11-29 00:11:14,273 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:11:14,275 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:11:14,275 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:11:14,278 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:11:14,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:11:12" (1/3) ... [2023-11-29 00:11:14,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e82e94d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:11:14, skipping insertion in model container [2023-11-29 00:11:14,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:11:12" (2/3) ... [2023-11-29 00:11:14,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e82e94d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:11:14, skipping insertion in model container [2023-11-29 00:11:14,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:11:14" (3/3) ... [2023-11-29 00:11:14,281 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-11-29 00:11:14,296 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:11:14,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:11:14,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:11:14,352 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;@75b17f1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:11:14,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:11:14,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 315 states have (on average 1.8095238095238095) internal successors, (570), 323 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:14,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-29 00:11:14,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:14,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:14,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:14,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:14,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1414953681, now seen corresponding path program 1 times [2023-11-29 00:11:14,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:14,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874345150] [2023-11-29 00:11:14,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:14,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:14,842 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 00:11:14,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:14,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874345150] [2023-11-29 00:11:14,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874345150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:14,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:14,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:11:14,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087702934] [2023-11-29 00:11:14,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:14,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:11:14,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:14,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:11:14,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:14,884 INFO L87 Difference]: Start difference. First operand has 324 states, 315 states have (on average 1.8095238095238095) internal successors, (570), 323 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:14,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:14,981 INFO L93 Difference]: Finished difference Result 583 states and 987 transitions. [2023-11-29 00:11:14,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:11:14,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-11-29 00:11:14,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:15,001 INFO L225 Difference]: With dead ends: 583 [2023-11-29 00:11:15,001 INFO L226 Difference]: Without dead ends: 430 [2023-11-29 00:11:15,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:15,008 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 221 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:15,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1210 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:11:15,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-11-29 00:11:15,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 428. [2023-11-29 00:11:15,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.6370023419203747) internal successors, (699), 427 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:15,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 699 transitions. [2023-11-29 00:11:15,071 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 699 transitions. Word has length 110 [2023-11-29 00:11:15,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:15,072 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 699 transitions. [2023-11-29 00:11:15,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:15,072 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 699 transitions. [2023-11-29 00:11:15,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 00:11:15,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:15,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:15,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:11:15,077 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:15,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:15,078 INFO L85 PathProgramCache]: Analyzing trace with hash 512229007, now seen corresponding path program 1 times [2023-11-29 00:11:15,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:15,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891548748] [2023-11-29 00:11:15,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:15,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:15,242 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 00:11:15,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:15,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891548748] [2023-11-29 00:11:15,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891548748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:15,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:15,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:11:15,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346409893] [2023-11-29 00:11:15,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:15,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:11:15,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:15,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:11:15,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:15,246 INFO L87 Difference]: Start difference. First operand 428 states and 699 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:15,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:15,280 INFO L93 Difference]: Finished difference Result 656 states and 1072 transitions. [2023-11-29 00:11:15,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:11:15,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-11-29 00:11:15,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:15,285 INFO L225 Difference]: With dead ends: 656 [2023-11-29 00:11:15,285 INFO L226 Difference]: Without dead ends: 530 [2023-11-29 00:11:15,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:15,288 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 187 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:15,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 1148 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:11:15,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2023-11-29 00:11:15,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 528. [2023-11-29 00:11:15,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 1.635673624288425) internal successors, (862), 527 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:15,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 862 transitions. [2023-11-29 00:11:15,313 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 862 transitions. Word has length 113 [2023-11-29 00:11:15,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:15,314 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 862 transitions. [2023-11-29 00:11:15,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:15,314 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 862 transitions. [2023-11-29 00:11:15,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 00:11:15,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:15,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:15,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:11:15,317 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:15,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:15,317 INFO L85 PathProgramCache]: Analyzing trace with hash 850243325, now seen corresponding path program 1 times [2023-11-29 00:11:15,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:15,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399287532] [2023-11-29 00:11:15,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:15,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:15,481 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 00:11:15,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:15,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399287532] [2023-11-29 00:11:15,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399287532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:15,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:15,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:11:15,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451866573] [2023-11-29 00:11:15,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:15,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:11:15,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:15,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:11:15,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:15,485 INFO L87 Difference]: Start difference. First operand 528 states and 862 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:15,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:15,519 INFO L93 Difference]: Finished difference Result 1177 states and 1915 transitions. [2023-11-29 00:11:15,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:11:15,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-11-29 00:11:15,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:15,524 INFO L225 Difference]: With dead ends: 1177 [2023-11-29 00:11:15,525 INFO L226 Difference]: Without dead ends: 839 [2023-11-29 00:11:15,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:15,528 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 180 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:15,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 1122 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:11:15,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2023-11-29 00:11:15,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 837. [2023-11-29 00:11:15,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 1.625598086124402) internal successors, (1359), 836 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:15,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1359 transitions. [2023-11-29 00:11:15,555 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1359 transitions. Word has length 113 [2023-11-29 00:11:15,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:15,555 INFO L495 AbstractCegarLoop]: Abstraction has 837 states and 1359 transitions. [2023-11-29 00:11:15,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:15,556 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1359 transitions. [2023-11-29 00:11:15,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 00:11:15,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:15,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:15,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:11:15,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:15,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:15,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1504406523, now seen corresponding path program 1 times [2023-11-29 00:11:15,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:15,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012041027] [2023-11-29 00:11:15,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:15,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:15,668 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 00:11:15,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:15,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012041027] [2023-11-29 00:11:15,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012041027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:15,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:15,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:11:15,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469339240] [2023-11-29 00:11:15,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:15,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:11:15,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:15,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:11:15,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:15,671 INFO L87 Difference]: Start difference. First operand 837 states and 1359 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:15,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:15,707 INFO L93 Difference]: Finished difference Result 1453 states and 2359 transitions. [2023-11-29 00:11:15,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:11:15,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-11-29 00:11:15,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:15,715 INFO L225 Difference]: With dead ends: 1453 [2023-11-29 00:11:15,715 INFO L226 Difference]: Without dead ends: 1115 [2023-11-29 00:11:15,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:15,717 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 181 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:15,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 1121 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:11:15,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2023-11-29 00:11:15,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1113. [2023-11-29 00:11:15,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1112 states have (on average 1.620503597122302) internal successors, (1802), 1112 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:15,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1802 transitions. [2023-11-29 00:11:15,750 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1802 transitions. Word has length 116 [2023-11-29 00:11:15,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:15,751 INFO L495 AbstractCegarLoop]: Abstraction has 1113 states and 1802 transitions. [2023-11-29 00:11:15,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:15,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1802 transitions. [2023-11-29 00:11:15,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 00:11:15,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:15,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:15,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:11:15,753 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:15,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:15,754 INFO L85 PathProgramCache]: Analyzing trace with hash 879320951, now seen corresponding path program 1 times [2023-11-29 00:11:15,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:15,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673303643] [2023-11-29 00:11:15,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:15,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:15,888 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 00:11:15,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:15,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673303643] [2023-11-29 00:11:15,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673303643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:15,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:15,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:11:15,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484430850] [2023-11-29 00:11:15,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:15,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:11:15,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:15,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:11:15,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:15,892 INFO L87 Difference]: Start difference. First operand 1113 states and 1802 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:15,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:15,934 INFO L93 Difference]: Finished difference Result 2842 states and 4579 transitions. [2023-11-29 00:11:15,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:11:15,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-11-29 00:11:15,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:15,946 INFO L225 Difference]: With dead ends: 2842 [2023-11-29 00:11:15,946 INFO L226 Difference]: Without dead ends: 1937 [2023-11-29 00:11:15,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:15,949 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 174 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:15,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 1096 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:11:15,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2023-11-29 00:11:16,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1935. [2023-11-29 00:11:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1934 states have (on average 1.6049638055842812) internal successors, (3104), 1934 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:16,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 3104 transitions. [2023-11-29 00:11:16,013 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 3104 transitions. Word has length 116 [2023-11-29 00:11:16,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:16,014 INFO L495 AbstractCegarLoop]: Abstraction has 1935 states and 3104 transitions. [2023-11-29 00:11:16,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:16,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 3104 transitions. [2023-11-29 00:11:16,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 00:11:16,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:16,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:16,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:11:16,016 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:16,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:16,017 INFO L85 PathProgramCache]: Analyzing trace with hash 200690089, now seen corresponding path program 1 times [2023-11-29 00:11:16,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:16,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321970357] [2023-11-29 00:11:16,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:16,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:16,121 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 00:11:16,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:16,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321970357] [2023-11-29 00:11:16,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321970357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:16,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:16,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:11:16,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923693179] [2023-11-29 00:11:16,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:16,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:11:16,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:16,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:11:16,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:16,123 INFO L87 Difference]: Start difference. First operand 1935 states and 3104 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:16,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:16,168 INFO L93 Difference]: Finished difference Result 3529 states and 5666 transitions. [2023-11-29 00:11:16,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:11:16,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2023-11-29 00:11:16,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:16,183 INFO L225 Difference]: With dead ends: 3529 [2023-11-29 00:11:16,183 INFO L226 Difference]: Without dead ends: 2624 [2023-11-29 00:11:16,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:16,186 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 175 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:16,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 1094 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:11:16,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2023-11-29 00:11:16,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2622. [2023-11-29 00:11:16,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2622 states, 2621 states have (on average 1.5986264784433422) internal successors, (4190), 2621 states have internal predecessors, (4190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:16,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 4190 transitions. [2023-11-29 00:11:16,258 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 4190 transitions. Word has length 119 [2023-11-29 00:11:16,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:16,258 INFO L495 AbstractCegarLoop]: Abstraction has 2622 states and 4190 transitions. [2023-11-29 00:11:16,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:16,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 4190 transitions. [2023-11-29 00:11:16,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 00:11:16,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:16,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:16,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:11:16,261 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:16,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:16,262 INFO L85 PathProgramCache]: Analyzing trace with hash -582704553, now seen corresponding path program 1 times [2023-11-29 00:11:16,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:16,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992912682] [2023-11-29 00:11:16,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:16,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:16,380 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 00:11:16,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:16,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992912682] [2023-11-29 00:11:16,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992912682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:16,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:16,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:11:16,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379507325] [2023-11-29 00:11:16,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:16,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:11:16,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:16,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:11:16,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:16,383 INFO L87 Difference]: Start difference. First operand 2622 states and 4190 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:16,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:16,479 INFO L93 Difference]: Finished difference Result 7171 states and 11383 transitions. [2023-11-29 00:11:16,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:11:16,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2023-11-29 00:11:16,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:16,506 INFO L225 Difference]: With dead ends: 7171 [2023-11-29 00:11:16,506 INFO L226 Difference]: Without dead ends: 4775 [2023-11-29 00:11:16,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:16,511 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 168 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:16,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 998 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:11:16,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2023-11-29 00:11:16,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 4773. [2023-11-29 00:11:16,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4773 states, 4772 states have (on average 1.577745180217938) internal successors, (7529), 4772 states have internal predecessors, (7529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:16,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4773 states to 4773 states and 7529 transitions. [2023-11-29 00:11:16,667 INFO L78 Accepts]: Start accepts. Automaton has 4773 states and 7529 transitions. Word has length 119 [2023-11-29 00:11:16,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:16,667 INFO L495 AbstractCegarLoop]: Abstraction has 4773 states and 7529 transitions. [2023-11-29 00:11:16,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:16,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4773 states and 7529 transitions. [2023-11-29 00:11:16,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 00:11:16,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:16,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:16,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:11:16,670 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:16,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:16,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1787106275, now seen corresponding path program 1 times [2023-11-29 00:11:16,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:16,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332508265] [2023-11-29 00:11:16,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:16,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:16,859 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 00:11:16,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:16,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332508265] [2023-11-29 00:11:16,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332508265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:16,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:16,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:11:16,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530029198] [2023-11-29 00:11:16,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:16,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:11:16,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:16,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:11:16,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:11:16,861 INFO L87 Difference]: Start difference. First operand 4773 states and 7529 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:17,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:17,317 INFO L93 Difference]: Finished difference Result 29512 states and 46822 transitions. [2023-11-29 00:11:17,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:11:17,318 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2023-11-29 00:11:17,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:17,418 INFO L225 Difference]: With dead ends: 29512 [2023-11-29 00:11:17,418 INFO L226 Difference]: Without dead ends: 24845 [2023-11-29 00:11:17,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:11:17,430 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 2199 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 3523 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:17,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2199 Valid, 3523 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:11:17,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24845 states. [2023-11-29 00:11:17,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24845 to 9006. [2023-11-29 00:11:17,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9006 states, 9005 states have (on average 1.5822320932815104) internal successors, (14248), 9005 states have internal predecessors, (14248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:17,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9006 states to 9006 states and 14248 transitions. [2023-11-29 00:11:17,816 INFO L78 Accepts]: Start accepts. Automaton has 9006 states and 14248 transitions. Word has length 122 [2023-11-29 00:11:17,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:17,816 INFO L495 AbstractCegarLoop]: Abstraction has 9006 states and 14248 transitions. [2023-11-29 00:11:17,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:17,816 INFO L276 IsEmpty]: Start isEmpty. Operand 9006 states and 14248 transitions. [2023-11-29 00:11:17,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 00:11:17,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:17,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:17,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:11:17,818 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:17,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:17,819 INFO L85 PathProgramCache]: Analyzing trace with hash 367218292, now seen corresponding path program 1 times [2023-11-29 00:11:17,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:17,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685026991] [2023-11-29 00:11:17,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:17,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:17,953 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 00:11:17,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:17,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685026991] [2023-11-29 00:11:17,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685026991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:17,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:17,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:11:17,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176597549] [2023-11-29 00:11:17,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:17,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:11:17,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:17,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:11:17,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:11:17,955 INFO L87 Difference]: Start difference. First operand 9006 states and 14248 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:18,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:18,143 INFO L93 Difference]: Finished difference Result 29290 states and 46412 transitions. [2023-11-29 00:11:18,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:11:18,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2023-11-29 00:11:18,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:18,190 INFO L225 Difference]: With dead ends: 29290 [2023-11-29 00:11:18,190 INFO L226 Difference]: Without dead ends: 20510 [2023-11-29 00:11:18,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 00:11:18,205 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 597 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:18,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 1695 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:11:18,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20510 states. [2023-11-29 00:11:18,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20510 to 14704. [2023-11-29 00:11:18,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14704 states, 14703 states have (on average 1.5775692035638986) internal successors, (23195), 14703 states have internal predecessors, (23195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:18,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14704 states to 14704 states and 23195 transitions. [2023-11-29 00:11:18,662 INFO L78 Accepts]: Start accepts. Automaton has 14704 states and 23195 transitions. Word has length 123 [2023-11-29 00:11:18,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:18,663 INFO L495 AbstractCegarLoop]: Abstraction has 14704 states and 23195 transitions. [2023-11-29 00:11:18,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:18,664 INFO L276 IsEmpty]: Start isEmpty. Operand 14704 states and 23195 transitions. [2023-11-29 00:11:18,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 00:11:18,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:18,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:18,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:11:18,666 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:18,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:18,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1011001031, now seen corresponding path program 1 times [2023-11-29 00:11:18,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:18,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533228614] [2023-11-29 00:11:18,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:18,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:18,785 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 00:11:18,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:18,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533228614] [2023-11-29 00:11:18,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533228614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:18,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:18,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:11:18,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107634601] [2023-11-29 00:11:18,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:18,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:11:18,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:18,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:11:18,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:18,788 INFO L87 Difference]: Start difference. First operand 14704 states and 23195 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:19,001 INFO L93 Difference]: Finished difference Result 27914 states and 44087 transitions. [2023-11-29 00:11:19,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:11:19,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2023-11-29 00:11:19,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:19,051 INFO L225 Difference]: With dead ends: 27914 [2023-11-29 00:11:19,051 INFO L226 Difference]: Without dead ends: 20148 [2023-11-29 00:11:19,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:19,067 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 169 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:19,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1074 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:11:19,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20148 states. [2023-11-29 00:11:19,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20148 to 20146. [2023-11-29 00:11:19,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20146 states, 20145 states have (on average 1.567783569123852) internal successors, (31583), 20145 states have internal predecessors, (31583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:19,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20146 states to 20146 states and 31583 transitions. [2023-11-29 00:11:19,497 INFO L78 Accepts]: Start accepts. Automaton has 20146 states and 31583 transitions. Word has length 123 [2023-11-29 00:11:19,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:19,497 INFO L495 AbstractCegarLoop]: Abstraction has 20146 states and 31583 transitions. [2023-11-29 00:11:19,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:19,498 INFO L276 IsEmpty]: Start isEmpty. Operand 20146 states and 31583 transitions. [2023-11-29 00:11:19,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 00:11:19,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:19,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:19,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:11:19,500 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:19,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:19,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1311978759, now seen corresponding path program 1 times [2023-11-29 00:11:19,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:19,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980108538] [2023-11-29 00:11:19,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:19,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:19,970 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 00:11:19,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:19,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980108538] [2023-11-29 00:11:19,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980108538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:19,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:19,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:11:19,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133627843] [2023-11-29 00:11:19,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:19,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:11:19,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:19,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:11:19,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:11:19,973 INFO L87 Difference]: Start difference. First operand 20146 states and 31583 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:20,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:20,196 INFO L93 Difference]: Finished difference Result 33498 states and 52178 transitions. [2023-11-29 00:11:20,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:11:20,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2023-11-29 00:11:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:20,248 INFO L225 Difference]: With dead ends: 33498 [2023-11-29 00:11:20,248 INFO L226 Difference]: Without dead ends: 33496 [2023-11-29 00:11:20,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:11:20,257 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 391 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:20,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 2299 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:11:20,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33496 states. [2023-11-29 00:11:20,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33496 to 20466. [2023-11-29 00:11:20,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20466 states, 20465 states have (on average 1.5549474712924505) internal successors, (31822), 20465 states have internal predecessors, (31822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:20,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20466 states to 20466 states and 31822 transitions. [2023-11-29 00:11:20,661 INFO L78 Accepts]: Start accepts. Automaton has 20466 states and 31822 transitions. Word has length 132 [2023-11-29 00:11:20,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:20,662 INFO L495 AbstractCegarLoop]: Abstraction has 20466 states and 31822 transitions. [2023-11-29 00:11:20,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:20,662 INFO L276 IsEmpty]: Start isEmpty. Operand 20466 states and 31822 transitions. [2023-11-29 00:11:20,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-29 00:11:20,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:20,666 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:11:20,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:11:20,666 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:20,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:20,667 INFO L85 PathProgramCache]: Analyzing trace with hash 695692182, now seen corresponding path program 1 times [2023-11-29 00:11:20,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:20,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154692522] [2023-11-29 00:11:20,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:20,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:20,855 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:11:20,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:20,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154692522] [2023-11-29 00:11:20,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154692522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:20,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:20,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:11:20,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965708978] [2023-11-29 00:11:20,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:20,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:11:20,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:20,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:11:20,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:11:20,857 INFO L87 Difference]: Start difference. First operand 20466 states and 31822 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:21,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:21,232 INFO L93 Difference]: Finished difference Result 71515 states and 111394 transitions. [2023-11-29 00:11:21,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:11:21,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2023-11-29 00:11:21,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:21,332 INFO L225 Difference]: With dead ends: 71515 [2023-11-29 00:11:21,332 INFO L226 Difference]: Without dead ends: 58109 [2023-11-29 00:11:21,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 00:11:21,350 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 1330 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:21,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1330 Valid, 2612 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:11:21,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58109 states. [2023-11-29 00:11:21,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58109 to 34938. [2023-11-29 00:11:21,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34938 states, 34937 states have (on average 1.5517073589604145) internal successors, (54212), 34937 states have internal predecessors, (54212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:21,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34938 states to 34938 states and 54212 transitions. [2023-11-29 00:11:21,959 INFO L78 Accepts]: Start accepts. Automaton has 34938 states and 54212 transitions. Word has length 162 [2023-11-29 00:11:21,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:21,959 INFO L495 AbstractCegarLoop]: Abstraction has 34938 states and 54212 transitions. [2023-11-29 00:11:21,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:21,960 INFO L276 IsEmpty]: Start isEmpty. Operand 34938 states and 54212 transitions. [2023-11-29 00:11:21,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-29 00:11:21,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:21,966 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:11:21,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:11:21,966 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:21,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:21,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1890482380, now seen corresponding path program 1 times [2023-11-29 00:11:21,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:21,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540968561] [2023-11-29 00:11:21,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:21,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:22,180 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:11:22,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:22,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540968561] [2023-11-29 00:11:22,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540968561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:22,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:22,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:11:22,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304909] [2023-11-29 00:11:22,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:22,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:11:22,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:22,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:11:22,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:11:22,183 INFO L87 Difference]: Start difference. First operand 34938 states and 54212 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:22,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:22,569 INFO L93 Difference]: Finished difference Result 81757 states and 127299 transitions. [2023-11-29 00:11:22,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:11:22,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2023-11-29 00:11:22,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:22,825 INFO L225 Difference]: With dead ends: 81757 [2023-11-29 00:11:22,825 INFO L226 Difference]: Without dead ends: 68351 [2023-11-29 00:11:22,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 00:11:22,853 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 1265 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 2915 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:22,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1265 Valid, 2915 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:11:22,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68351 states. [2023-11-29 00:11:23,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68351 to 52860. [2023-11-29 00:11:23,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52860 states, 52859 states have (on average 1.550918481242551) internal successors, (81980), 52859 states have internal predecessors, (81980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:23,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52860 states to 52860 states and 81980 transitions. [2023-11-29 00:11:23,530 INFO L78 Accepts]: Start accepts. Automaton has 52860 states and 81980 transitions. Word has length 162 [2023-11-29 00:11:23,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:23,530 INFO L495 AbstractCegarLoop]: Abstraction has 52860 states and 81980 transitions. [2023-11-29 00:11:23,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:23,531 INFO L276 IsEmpty]: Start isEmpty. Operand 52860 states and 81980 transitions. [2023-11-29 00:11:23,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-29 00:11:23,535 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:23,535 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:11:23,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 00:11:23,535 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:23,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:23,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1721533206, now seen corresponding path program 1 times [2023-11-29 00:11:23,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:23,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186192819] [2023-11-29 00:11:23,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:23,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:23,707 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:11:23,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:23,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186192819] [2023-11-29 00:11:23,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186192819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:23,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:23,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:11:23,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694651905] [2023-11-29 00:11:23,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:23,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:11:23,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:23,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:11:23,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:11:23,709 INFO L87 Difference]: Start difference. First operand 52860 states and 81980 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:24,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:24,167 INFO L93 Difference]: Finished difference Result 89381 states and 139167 transitions. [2023-11-29 00:11:24,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:11:24,168 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2023-11-29 00:11:24,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:24,256 INFO L225 Difference]: With dead ends: 89381 [2023-11-29 00:11:24,256 INFO L226 Difference]: Without dead ends: 75975 [2023-11-29 00:11:24,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 00:11:24,278 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 1181 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:24,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 3058 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:11:24,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75975 states. [2023-11-29 00:11:25,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75975 to 64026. [2023-11-29 00:11:25,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64026 states, 64025 states have (on average 1.5515033190160095) internal successors, (99335), 64025 states have internal predecessors, (99335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:25,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64026 states to 64026 states and 99335 transitions. [2023-11-29 00:11:25,348 INFO L78 Accepts]: Start accepts. Automaton has 64026 states and 99335 transitions. Word has length 162 [2023-11-29 00:11:25,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:25,349 INFO L495 AbstractCegarLoop]: Abstraction has 64026 states and 99335 transitions. [2023-11-29 00:11:25,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:25,349 INFO L276 IsEmpty]: Start isEmpty. Operand 64026 states and 99335 transitions. [2023-11-29 00:11:25,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-29 00:11:25,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:25,355 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:11:25,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:11:25,356 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:25,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:25,356 INFO L85 PathProgramCache]: Analyzing trace with hash -806860798, now seen corresponding path program 1 times [2023-11-29 00:11:25,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:25,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222590461] [2023-11-29 00:11:25,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:25,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:25,580 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:11:25,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:25,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222590461] [2023-11-29 00:11:25,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222590461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:25,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:25,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:11:25,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498223820] [2023-11-29 00:11:25,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:25,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:11:25,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:25,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:11:25,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:11:25,583 INFO L87 Difference]: Start difference. First operand 64026 states and 99335 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:26,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:26,034 INFO L93 Difference]: Finished difference Result 92104 states and 143410 transitions. [2023-11-29 00:11:26,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:11:26,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2023-11-29 00:11:26,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:26,138 INFO L225 Difference]: With dead ends: 92104 [2023-11-29 00:11:26,138 INFO L226 Difference]: Without dead ends: 83786 [2023-11-29 00:11:26,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 00:11:26,161 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 1206 mSDsluCounter, 2531 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 3244 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:26,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 3244 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:11:26,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83786 states. [2023-11-29 00:11:26,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83786 to 72002. [2023-11-29 00:11:27,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72002 states, 72001 states have (on average 1.552436771711504) internal successors, (111777), 72001 states have internal predecessors, (111777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:27,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72002 states to 72002 states and 111777 transitions. [2023-11-29 00:11:27,132 INFO L78 Accepts]: Start accepts. Automaton has 72002 states and 111777 transitions. Word has length 162 [2023-11-29 00:11:27,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:27,133 INFO L495 AbstractCegarLoop]: Abstraction has 72002 states and 111777 transitions. [2023-11-29 00:11:27,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:27,133 INFO L276 IsEmpty]: Start isEmpty. Operand 72002 states and 111777 transitions. [2023-11-29 00:11:27,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 00:11:27,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:27,137 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:11:27,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 00:11:27,138 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:27,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:27,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1353660192, now seen corresponding path program 1 times [2023-11-29 00:11:27,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:27,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860848461] [2023-11-29 00:11:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:27,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:11:27,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:27,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860848461] [2023-11-29 00:11:27,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860848461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:27,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:27,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:11:27,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135150785] [2023-11-29 00:11:27,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:27,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:11:27,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:27,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:11:27,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:11:27,567 INFO L87 Difference]: Start difference. First operand 72002 states and 111777 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:28,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:28,229 INFO L93 Difference]: Finished difference Result 199355 states and 309468 transitions. [2023-11-29 00:11:28,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:11:28,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2023-11-29 00:11:28,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:28,373 INFO L225 Difference]: With dead ends: 199355 [2023-11-29 00:11:28,373 INFO L226 Difference]: Without dead ends: 146715 [2023-11-29 00:11:28,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 00:11:28,415 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 641 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:28,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1486 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:11:28,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146715 states. [2023-11-29 00:11:29,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146715 to 124286. [2023-11-29 00:11:29,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124286 states, 124285 states have (on average 1.5504123586917167) internal successors, (192693), 124285 states have internal predecessors, (192693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:30,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124286 states to 124286 states and 192693 transitions. [2023-11-29 00:11:30,100 INFO L78 Accepts]: Start accepts. Automaton has 124286 states and 192693 transitions. Word has length 163 [2023-11-29 00:11:30,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:30,101 INFO L495 AbstractCegarLoop]: Abstraction has 124286 states and 192693 transitions. [2023-11-29 00:11:30,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:30,101 INFO L276 IsEmpty]: Start isEmpty. Operand 124286 states and 192693 transitions. [2023-11-29 00:11:30,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 00:11:30,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:30,105 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:11:30,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 00:11:30,105 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:30,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:30,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1021764108, now seen corresponding path program 1 times [2023-11-29 00:11:30,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:30,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190363910] [2023-11-29 00:11:30,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:30,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:11:31,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:31,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190363910] [2023-11-29 00:11:31,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190363910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:31,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:31,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:11:31,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763373807] [2023-11-29 00:11:31,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:31,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:11:31,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:31,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:11:31,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:11:31,181 INFO L87 Difference]: Start difference. First operand 124286 states and 192693 transitions. Second operand has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:32,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:32,134 INFO L93 Difference]: Finished difference Result 342458 states and 530980 transitions. [2023-11-29 00:11:32,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:11:32,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2023-11-29 00:11:32,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:32,404 INFO L225 Difference]: With dead ends: 342458 [2023-11-29 00:11:32,404 INFO L226 Difference]: Without dead ends: 252252 [2023-11-29 00:11:32,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:11:32,452 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 1415 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:32,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 1911 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:11:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252252 states. [2023-11-29 00:11:34,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252252 to 213878. [2023-11-29 00:11:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213878 states, 213877 states have (on average 1.548502176484615) internal successors, (331189), 213877 states have internal predecessors, (331189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:35,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213878 states to 213878 states and 331189 transitions. [2023-11-29 00:11:35,645 INFO L78 Accepts]: Start accepts. Automaton has 213878 states and 331189 transitions. Word has length 163 [2023-11-29 00:11:35,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:35,647 INFO L495 AbstractCegarLoop]: Abstraction has 213878 states and 331189 transitions. [2023-11-29 00:11:35,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:35,647 INFO L276 IsEmpty]: Start isEmpty. Operand 213878 states and 331189 transitions. [2023-11-29 00:11:35,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 00:11:35,650 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:35,650 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:11:35,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 00:11:35,651 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:35,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:35,652 INFO L85 PathProgramCache]: Analyzing trace with hash 690057007, now seen corresponding path program 1 times [2023-11-29 00:11:35,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:35,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446924273] [2023-11-29 00:11:35,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:35,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:35,828 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:11:35,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:35,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446924273] [2023-11-29 00:11:35,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446924273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:35,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:35,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:11:35,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602032619] [2023-11-29 00:11:35,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:35,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:11:35,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:35,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:11:35,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:11:35,830 INFO L87 Difference]: Start difference. First operand 213878 states and 331189 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:36,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:36,958 INFO L93 Difference]: Finished difference Result 303491 states and 471318 transitions. [2023-11-29 00:11:36,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:11:36,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2023-11-29 00:11:36,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:37,301 INFO L225 Difference]: With dead ends: 303491 [2023-11-29 00:11:37,301 INFO L226 Difference]: Without dead ends: 258509 [2023-11-29 00:11:37,352 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 00:11:37,353 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 356 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:37,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 1406 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:11:37,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258509 states. [2023-11-29 00:11:39,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258509 to 239673. [2023-11-29 00:11:40,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239673 states, 239672 states have (on average 1.5489126806635736) internal successors, (371231), 239672 states have internal predecessors, (371231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:40,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239673 states to 239673 states and 371231 transitions. [2023-11-29 00:11:40,631 INFO L78 Accepts]: Start accepts. Automaton has 239673 states and 371231 transitions. Word has length 163 [2023-11-29 00:11:40,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:40,631 INFO L495 AbstractCegarLoop]: Abstraction has 239673 states and 371231 transitions. [2023-11-29 00:11:40,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:40,631 INFO L276 IsEmpty]: Start isEmpty. Operand 239673 states and 371231 transitions. [2023-11-29 00:11:40,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 00:11:40,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:40,634 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:11:40,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 00:11:40,634 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:40,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:40,634 INFO L85 PathProgramCache]: Analyzing trace with hash -5210606, now seen corresponding path program 1 times [2023-11-29 00:11:40,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:40,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888215033] [2023-11-29 00:11:40,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:40,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:40,758 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:11:40,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:40,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888215033] [2023-11-29 00:11:40,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888215033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:40,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:40,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:11:40,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390150060] [2023-11-29 00:11:40,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:40,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:11:40,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:40,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:11:40,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:40,760 INFO L87 Difference]: Start difference. First operand 239673 states and 371231 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:42,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:42,069 INFO L93 Difference]: Finished difference Result 439074 states and 680629 transitions. [2023-11-29 00:11:42,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:11:42,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2023-11-29 00:11:42,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:42,321 INFO L225 Difference]: With dead ends: 439074 [2023-11-29 00:11:42,321 INFO L226 Difference]: Without dead ends: 199645 [2023-11-29 00:11:42,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:42,414 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 143 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:42,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1099 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:11:42,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199645 states. [2023-11-29 00:11:44,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199645 to 199231. [2023-11-29 00:11:44,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199231 states, 199230 states have (on average 1.5447723736385082) internal successors, (307765), 199230 states have internal predecessors, (307765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:45,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199231 states to 199231 states and 307765 transitions. [2023-11-29 00:11:45,117 INFO L78 Accepts]: Start accepts. Automaton has 199231 states and 307765 transitions. Word has length 163 [2023-11-29 00:11:45,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:45,117 INFO L495 AbstractCegarLoop]: Abstraction has 199231 states and 307765 transitions. [2023-11-29 00:11:45,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:45,118 INFO L276 IsEmpty]: Start isEmpty. Operand 199231 states and 307765 transitions. [2023-11-29 00:11:45,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 00:11:45,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:45,121 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:11:45,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 00:11:45,122 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:45,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:45,122 INFO L85 PathProgramCache]: Analyzing trace with hash -446489888, now seen corresponding path program 1 times [2023-11-29 00:11:45,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:45,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923981455] [2023-11-29 00:11:45,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:45,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:11:45,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:45,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923981455] [2023-11-29 00:11:45,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923981455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:45,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:45,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:11:45,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145997279] [2023-11-29 00:11:45,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:45,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:11:45,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:45,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:11:45,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:11:45,915 INFO L87 Difference]: Start difference. First operand 199231 states and 307765 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:47,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:47,382 INFO L93 Difference]: Finished difference Result 482463 states and 747602 transitions. [2023-11-29 00:11:47,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:11:47,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2023-11-29 00:11:47,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:47,803 INFO L225 Difference]: With dead ends: 482463 [2023-11-29 00:11:47,804 INFO L226 Difference]: Without dead ends: 358479 [2023-11-29 00:11:47,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 00:11:47,885 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 624 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:47,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1486 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:11:48,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358479 states. [2023-11-29 00:11:51,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358479 to 317423. [2023-11-29 00:11:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317423 states, 317422 states have (on average 1.5454788893019387) internal successors, (490569), 317422 states have internal predecessors, (490569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:52,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317423 states to 317423 states and 490569 transitions. [2023-11-29 00:11:52,374 INFO L78 Accepts]: Start accepts. Automaton has 317423 states and 490569 transitions. Word has length 163 [2023-11-29 00:11:52,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:52,375 INFO L495 AbstractCegarLoop]: Abstraction has 317423 states and 490569 transitions. [2023-11-29 00:11:52,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:52,375 INFO L276 IsEmpty]: Start isEmpty. Operand 317423 states and 490569 transitions. [2023-11-29 00:11:52,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-29 00:11:52,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:52,390 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:11:52,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 00:11:52,390 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:52,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:52,392 INFO L85 PathProgramCache]: Analyzing trace with hash 75278138, now seen corresponding path program 1 times [2023-11-29 00:11:52,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:52,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376273825] [2023-11-29 00:11:52,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:52,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 00:11:52,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:52,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376273825] [2023-11-29 00:11:52,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376273825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:52,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:52,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:11:52,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803964162] [2023-11-29 00:11:52,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:52,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:11:52,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:52,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:11:52,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:52,569 INFO L87 Difference]: Start difference. First operand 317423 states and 490569 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:54,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:54,355 INFO L93 Difference]: Finished difference Result 541538 states and 839482 transitions. [2023-11-29 00:11:54,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:11:54,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2023-11-29 00:11:54,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:54,697 INFO L225 Difference]: With dead ends: 541538 [2023-11-29 00:11:54,697 INFO L226 Difference]: Without dead ends: 233526 [2023-11-29 00:11:54,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:11:54,815 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 159 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:54,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1164 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:11:54,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233526 states. [2023-11-29 00:11:56,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233526 to 179281. [2023-11-29 00:11:57,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179281 states, 179280 states have (on average 1.5448962516733602) internal successors, (276969), 179280 states have internal predecessors, (276969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:57,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179281 states to 179281 states and 276969 transitions. [2023-11-29 00:11:57,295 INFO L78 Accepts]: Start accepts. Automaton has 179281 states and 276969 transitions. Word has length 216 [2023-11-29 00:11:57,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:57,295 INFO L495 AbstractCegarLoop]: Abstraction has 179281 states and 276969 transitions. [2023-11-29 00:11:57,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:57,295 INFO L276 IsEmpty]: Start isEmpty. Operand 179281 states and 276969 transitions. [2023-11-29 00:11:57,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-11-29 00:11:57,305 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:57,305 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:11:57,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 00:11:57,305 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:11:57,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:57,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2118037370, now seen corresponding path program 1 times [2023-11-29 00:11:57,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:57,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336261102] [2023-11-29 00:11:57,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:57,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:57,561 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 00:11:57,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:57,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336261102] [2023-11-29 00:11:57,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336261102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:57,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:57,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:11:57,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811814327] [2023-11-29 00:11:57,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:57,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:11:57,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:57,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:11:57,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:11:57,563 INFO L87 Difference]: Start difference. First operand 179281 states and 276969 transitions. Second operand has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:11:58,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:58,730 INFO L93 Difference]: Finished difference Result 335442 states and 522925 transitions. [2023-11-29 00:11:58,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:11:58,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2023-11-29 00:11:58,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:59,029 INFO L225 Difference]: With dead ends: 335442 [2023-11-29 00:11:59,029 INFO L226 Difference]: Without dead ends: 273143 [2023-11-29 00:11:59,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 00:11:59,079 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 1206 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:59,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 2308 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:11:59,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273143 states. [2023-11-29 00:12:02,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273143 to 273137. [2023-11-29 00:12:02,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273137 states, 273136 states have (on average 1.5607426337062855) internal successors, (426295), 273136 states have internal predecessors, (426295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:02,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273137 states to 273137 states and 426295 transitions. [2023-11-29 00:12:02,783 INFO L78 Accepts]: Start accepts. Automaton has 273137 states and 426295 transitions. Word has length 220 [2023-11-29 00:12:02,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:02,783 INFO L495 AbstractCegarLoop]: Abstraction has 273137 states and 426295 transitions. [2023-11-29 00:12:02,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand 273137 states and 426295 transitions. [2023-11-29 00:12:02,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-29 00:12:02,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:02,794 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:12:02,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 00:12:02,794 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:02,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:02,795 INFO L85 PathProgramCache]: Analyzing trace with hash 395199994, now seen corresponding path program 1 times [2023-11-29 00:12:02,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:02,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462726122] [2023-11-29 00:12:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:02,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:02,964 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 00:12:02,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:02,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462726122] [2023-11-29 00:12:02,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462726122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:12:02,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:12:02,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:12:02,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696843741] [2023-11-29 00:12:02,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:12:02,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:12:02,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:02,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:12:02,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:12:02,966 INFO L87 Difference]: Start difference. First operand 273137 states and 426295 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:04,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:04,349 INFO L93 Difference]: Finished difference Result 393312 states and 614158 transitions. [2023-11-29 00:12:04,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:12:04,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2023-11-29 00:12:04,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:04,499 INFO L225 Difference]: With dead ends: 393312 [2023-11-29 00:12:04,499 INFO L226 Difference]: Without dead ends: 120420 [2023-11-29 00:12:04,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:12:04,580 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 128 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:04,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1021 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:12:04,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120420 states. [2023-11-29 00:12:06,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120420 to 120359. [2023-11-29 00:12:06,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120359 states, 120358 states have (on average 1.5556506422506189) internal successors, (187235), 120358 states have internal predecessors, (187235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:06,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120359 states to 120359 states and 187235 transitions. [2023-11-29 00:12:06,296 INFO L78 Accepts]: Start accepts. Automaton has 120359 states and 187235 transitions. Word has length 223 [2023-11-29 00:12:06,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:06,296 INFO L495 AbstractCegarLoop]: Abstraction has 120359 states and 187235 transitions. [2023-11-29 00:12:06,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:06,296 INFO L276 IsEmpty]: Start isEmpty. Operand 120359 states and 187235 transitions. [2023-11-29 00:12:06,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-29 00:12:06,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:06,300 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:12:06,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 00:12:06,301 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:06,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:06,301 INFO L85 PathProgramCache]: Analyzing trace with hash 772086832, now seen corresponding path program 1 times [2023-11-29 00:12:06,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:06,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708191252] [2023-11-29 00:12:06,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:06,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:06,472 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-29 00:12:06,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:06,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708191252] [2023-11-29 00:12:06,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708191252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:12:06,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:12:06,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:12:06,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236832269] [2023-11-29 00:12:06,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:12:06,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:12:06,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:06,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:12:06,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:12:06,475 INFO L87 Difference]: Start difference. First operand 120359 states and 187235 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:07,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:07,118 INFO L93 Difference]: Finished difference Result 172355 states and 268180 transitions. [2023-11-29 00:12:07,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:12:07,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2023-11-29 00:12:07,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:07,167 INFO L225 Difference]: With dead ends: 172355 [2023-11-29 00:12:07,167 INFO L226 Difference]: Without dead ends: 52241 [2023-11-29 00:12:07,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:12:07,203 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 114 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:07,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 965 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:12:07,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52241 states. [2023-11-29 00:12:07,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52241 to 52239. [2023-11-29 00:12:07,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52239 states, 52238 states have (on average 1.5491596156054979) internal successors, (80925), 52238 states have internal predecessors, (80925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:07,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52239 states to 52239 states and 80925 transitions. [2023-11-29 00:12:07,737 INFO L78 Accepts]: Start accepts. Automaton has 52239 states and 80925 transitions. Word has length 223 [2023-11-29 00:12:07,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:07,738 INFO L495 AbstractCegarLoop]: Abstraction has 52239 states and 80925 transitions. [2023-11-29 00:12:07,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:07,738 INFO L276 IsEmpty]: Start isEmpty. Operand 52239 states and 80925 transitions. [2023-11-29 00:12:07,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-29 00:12:07,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:07,741 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:12:07,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 00:12:07,741 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:07,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:07,742 INFO L85 PathProgramCache]: Analyzing trace with hash -324632704, now seen corresponding path program 2 times [2023-11-29 00:12:07,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:07,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161120561] [2023-11-29 00:12:07,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:07,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 00:12:07,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:07,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161120561] [2023-11-29 00:12:07,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161120561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:12:07,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:12:07,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:12:07,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563748455] [2023-11-29 00:12:07,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:12:07,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:12:07,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:07,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:12:07,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:12:07,910 INFO L87 Difference]: Start difference. First operand 52239 states and 80925 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:08,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:08,336 INFO L93 Difference]: Finished difference Result 70035 states and 108668 transitions. [2023-11-29 00:12:08,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:12:08,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 226 [2023-11-29 00:12:08,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:08,352 INFO L225 Difference]: With dead ends: 70035 [2023-11-29 00:12:08,352 INFO L226 Difference]: Without dead ends: 18080 [2023-11-29 00:12:08,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:12:08,368 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 69 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:08,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 939 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:12:08,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18080 states. [2023-11-29 00:12:08,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18080 to 18067. [2023-11-29 00:12:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18067 states, 18066 states have (on average 1.551311856526071) internal successors, (28026), 18066 states have internal predecessors, (28026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:08,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18067 states to 18067 states and 28026 transitions. [2023-11-29 00:12:08,569 INFO L78 Accepts]: Start accepts. Automaton has 18067 states and 28026 transitions. Word has length 226 [2023-11-29 00:12:08,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:08,569 INFO L495 AbstractCegarLoop]: Abstraction has 18067 states and 28026 transitions. [2023-11-29 00:12:08,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:08,570 INFO L276 IsEmpty]: Start isEmpty. Operand 18067 states and 28026 transitions. [2023-11-29 00:12:08,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-11-29 00:12:08,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:08,572 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:12:08,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 00:12:08,573 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:08,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:08,573 INFO L85 PathProgramCache]: Analyzing trace with hash -385734396, now seen corresponding path program 3 times [2023-11-29 00:12:08,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:08,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051418242] [2023-11-29 00:12:08,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:08,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:08,872 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 81 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 00:12:08,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:08,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051418242] [2023-11-29 00:12:08,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051418242] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:12:08,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835882905] [2023-11-29 00:12:08,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:12:08,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:08,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:12:08,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:12:08,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:12:09,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 00:12:09,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:12:09,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:12:09,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:12:09,463 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-29 00:12:09,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:12:09,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835882905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:12:09,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:12:09,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 00:12:09,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308381067] [2023-11-29 00:12:09,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:12:09,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:12:09,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:09,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:12:09,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:12:09,467 INFO L87 Difference]: Start difference. First operand 18067 states and 28026 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:09,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:09,619 INFO L93 Difference]: Finished difference Result 53429 states and 82830 transitions. [2023-11-29 00:12:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:12:09,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2023-11-29 00:12:09,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:09,650 INFO L225 Difference]: With dead ends: 53429 [2023-11-29 00:12:09,650 INFO L226 Difference]: Without dead ends: 35402 [2023-11-29 00:12:09,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:12:09,662 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 1116 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:09,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 1161 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:12:09,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35402 states. [2023-11-29 00:12:10,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35402 to 35400. [2023-11-29 00:12:10,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35400 states, 35399 states have (on average 1.5419079635017938) internal successors, (54582), 35399 states have internal predecessors, (54582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:10,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35400 states to 35400 states and 54582 transitions. [2023-11-29 00:12:10,168 INFO L78 Accepts]: Start accepts. Automaton has 35400 states and 54582 transitions. Word has length 229 [2023-11-29 00:12:10,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:10,168 INFO L495 AbstractCegarLoop]: Abstraction has 35400 states and 54582 transitions. [2023-11-29 00:12:10,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:10,168 INFO L276 IsEmpty]: Start isEmpty. Operand 35400 states and 54582 transitions. [2023-11-29 00:12:10,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-11-29 00:12:10,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:10,172 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:12:10,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:12:10,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:10,372 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:10,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:10,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1875030771, now seen corresponding path program 1 times [2023-11-29 00:12:10,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:10,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919120487] [2023-11-29 00:12:10,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:10,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:10,458 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-29 00:12:10,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:10,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919120487] [2023-11-29 00:12:10,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919120487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:12:10,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:12:10,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:12:10,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564304495] [2023-11-29 00:12:10,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:12:10,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:12:10,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:10,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:12:10,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:12:10,460 INFO L87 Difference]: Start difference. First operand 35400 states and 54582 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:10,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:10,697 INFO L93 Difference]: Finished difference Result 106033 states and 163444 transitions. [2023-11-29 00:12:10,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:12:10,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2023-11-29 00:12:10,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:10,765 INFO L225 Difference]: With dead ends: 106033 [2023-11-29 00:12:10,765 INFO L226 Difference]: Without dead ends: 70720 [2023-11-29 00:12:10,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:12:10,790 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 430 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:10,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 1008 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:12:10,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70720 states. [2023-11-29 00:12:11,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70720 to 35413. [2023-11-29 00:12:11,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35413 states, 35412 states have (on average 1.5418502202643172) internal successors, (54600), 35412 states have internal predecessors, (54600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:11,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35413 states to 35413 states and 54600 transitions. [2023-11-29 00:12:11,320 INFO L78 Accepts]: Start accepts. Automaton has 35413 states and 54600 transitions. Word has length 231 [2023-11-29 00:12:11,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:11,320 INFO L495 AbstractCegarLoop]: Abstraction has 35413 states and 54600 transitions. [2023-11-29 00:12:11,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:11,321 INFO L276 IsEmpty]: Start isEmpty. Operand 35413 states and 54600 transitions. [2023-11-29 00:12:11,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-11-29 00:12:11,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:11,324 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:12:11,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 00:12:11,324 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:11,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:11,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2055727506, now seen corresponding path program 1 times [2023-11-29 00:12:11,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:11,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240608930] [2023-11-29 00:12:11,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:11,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-29 00:12:11,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:11,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240608930] [2023-11-29 00:12:11,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240608930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:12:11,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:12:11,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:12:11,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955988377] [2023-11-29 00:12:11,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:12:11,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:12:11,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:11,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:12:11,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:12:11,447 INFO L87 Difference]: Start difference. First operand 35413 states and 54600 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:11,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:11,963 INFO L93 Difference]: Finished difference Result 105007 states and 161750 transitions. [2023-11-29 00:12:11,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:12:11,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2023-11-29 00:12:11,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:12,032 INFO L225 Difference]: With dead ends: 105007 [2023-11-29 00:12:12,032 INFO L226 Difference]: Without dead ends: 69723 [2023-11-29 00:12:12,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:12:12,060 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 333 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:12,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1400 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:12:12,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69723 states. [2023-11-29 00:12:12,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69723 to 69721. [2023-11-29 00:12:12,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69721 states, 69720 states have (on average 1.533318990246701) internal successors, (106903), 69720 states have internal predecessors, (106903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:12,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69721 states to 69721 states and 106903 transitions. [2023-11-29 00:12:12,775 INFO L78 Accepts]: Start accepts. Automaton has 69721 states and 106903 transitions. Word has length 231 [2023-11-29 00:12:12,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:12,775 INFO L495 AbstractCegarLoop]: Abstraction has 69721 states and 106903 transitions. [2023-11-29 00:12:12,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:12,776 INFO L276 IsEmpty]: Start isEmpty. Operand 69721 states and 106903 transitions. [2023-11-29 00:12:12,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-11-29 00:12:13,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:13,054 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:12:13,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 00:12:13,054 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:13,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:13,055 INFO L85 PathProgramCache]: Analyzing trace with hash 2093785961, now seen corresponding path program 1 times [2023-11-29 00:12:13,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:13,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483990969] [2023-11-29 00:12:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:13,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-29 00:12:13,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:13,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483990969] [2023-11-29 00:12:13,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483990969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:12:13,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:12:13,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:12:13,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606242230] [2023-11-29 00:12:13,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:12:13,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:12:13,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:13,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:12:13,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:12:13,137 INFO L87 Difference]: Start difference. First operand 69721 states and 106903 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:13,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:13,518 INFO L93 Difference]: Finished difference Result 208936 states and 320313 transitions. [2023-11-29 00:12:13,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:12:13,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2023-11-29 00:12:13,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:13,648 INFO L225 Difference]: With dead ends: 208936 [2023-11-29 00:12:13,648 INFO L226 Difference]: Without dead ends: 139331 [2023-11-29 00:12:13,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:12:13,694 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 427 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:13,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 1425 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:12:13,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139331 states. [2023-11-29 00:12:14,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139331 to 69737. [2023-11-29 00:12:14,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69737 states, 69736 states have (on average 1.5332396466674314) internal successors, (106922), 69736 states have internal predecessors, (106922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:15,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69737 states to 69737 states and 106922 transitions. [2023-11-29 00:12:15,015 INFO L78 Accepts]: Start accepts. Automaton has 69737 states and 106922 transitions. Word has length 232 [2023-11-29 00:12:15,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:15,015 INFO L495 AbstractCegarLoop]: Abstraction has 69737 states and 106922 transitions. [2023-11-29 00:12:15,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:15,015 INFO L276 IsEmpty]: Start isEmpty. Operand 69737 states and 106922 transitions. [2023-11-29 00:12:15,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-11-29 00:12:15,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:15,021 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:12:15,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 00:12:15,021 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:15,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:15,022 INFO L85 PathProgramCache]: Analyzing trace with hash 18615337, now seen corresponding path program 1 times [2023-11-29 00:12:15,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:15,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912676387] [2023-11-29 00:12:15,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:15,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:15,116 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-29 00:12:15,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:15,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912676387] [2023-11-29 00:12:15,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912676387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:12:15,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:12:15,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:12:15,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979571647] [2023-11-29 00:12:15,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:12:15,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:12:15,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:15,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:12:15,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:12:15,118 INFO L87 Difference]: Start difference. First operand 69737 states and 106922 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:15,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:15,567 INFO L93 Difference]: Finished difference Result 206144 states and 315841 transitions. [2023-11-29 00:12:15,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:12:15,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2023-11-29 00:12:15,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:16,054 INFO L225 Difference]: With dead ends: 206144 [2023-11-29 00:12:16,054 INFO L226 Difference]: Without dead ends: 136553 [2023-11-29 00:12:16,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:12:16,080 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 392 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:16,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1481 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:12:16,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136553 states. [2023-11-29 00:12:17,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136553 to 136551. [2023-11-29 00:12:17,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136551 states, 136550 states have (on average 1.5232588795313071) internal successors, (208001), 136550 states have internal predecessors, (208001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:17,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136551 states to 136551 states and 208001 transitions. [2023-11-29 00:12:17,691 INFO L78 Accepts]: Start accepts. Automaton has 136551 states and 208001 transitions. Word has length 233 [2023-11-29 00:12:17,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:17,691 INFO L495 AbstractCegarLoop]: Abstraction has 136551 states and 208001 transitions. [2023-11-29 00:12:17,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:17,692 INFO L276 IsEmpty]: Start isEmpty. Operand 136551 states and 208001 transitions. [2023-11-29 00:12:17,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-11-29 00:12:17,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:17,700 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:12:17,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 00:12:17,700 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:17,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:17,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1436220410, now seen corresponding path program 1 times [2023-11-29 00:12:17,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:17,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568357402] [2023-11-29 00:12:17,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:17,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 75 proven. 28 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 00:12:17,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:17,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568357402] [2023-11-29 00:12:17,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568357402] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:12:17,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138794786] [2023-11-29 00:12:17,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:17,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:17,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:12:17,957 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:12:17,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:12:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:18,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:12:18,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:12:18,352 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-29 00:12:18,352 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:12:18,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138794786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:12:18,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:12:18,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 00:12:18,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721713349] [2023-11-29 00:12:18,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:12:18,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:12:18,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:18,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:12:18,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:12:18,355 INFO L87 Difference]: Start difference. First operand 136551 states and 208001 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:19,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:19,550 INFO L93 Difference]: Finished difference Result 403747 states and 614522 transitions. [2023-11-29 00:12:19,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:12:19,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2023-11-29 00:12:19,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:19,819 INFO L225 Difference]: With dead ends: 403747 [2023-11-29 00:12:19,820 INFO L226 Difference]: Without dead ends: 267268 [2023-11-29 00:12:19,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:12:19,891 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1150 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:19,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 1133 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:12:20,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267268 states. [2023-11-29 00:12:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267268 to 267266. [2023-11-29 00:12:23,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267266 states, 267265 states have (on average 1.5127869343161282) internal successors, (404315), 267265 states have internal predecessors, (404315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:23,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267266 states to 267266 states and 404315 transitions. [2023-11-29 00:12:23,637 INFO L78 Accepts]: Start accepts. Automaton has 267266 states and 404315 transitions. Word has length 233 [2023-11-29 00:12:23,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:23,638 INFO L495 AbstractCegarLoop]: Abstraction has 267266 states and 404315 transitions. [2023-11-29 00:12:23,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:23,638 INFO L276 IsEmpty]: Start isEmpty. Operand 267266 states and 404315 transitions. [2023-11-29 00:12:23,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-11-29 00:12:23,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:23,649 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:12:23,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:12:23,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_687a10de-6386-4fc6-b030-26af1bdcfc88/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 00:12:23,850 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:23,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:23,851 INFO L85 PathProgramCache]: Analyzing trace with hash 167803777, now seen corresponding path program 1 times [2023-11-29 00:12:23,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:23,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785622418] [2023-11-29 00:12:23,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:23,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-29 00:12:23,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:23,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785622418] [2023-11-29 00:12:23,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785622418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:12:23,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:12:23,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:12:23,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43836402] [2023-11-29 00:12:23,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:12:23,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:12:23,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:23,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:12:23,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:12:23,914 INFO L87 Difference]: Start difference. First operand 267266 states and 404315 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:26,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:26,038 INFO L93 Difference]: Finished difference Result 801609 states and 1212608 transitions. [2023-11-29 00:12:26,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:12:26,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2023-11-29 00:12:26,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:26,632 INFO L225 Difference]: With dead ends: 801609 [2023-11-29 00:12:26,632 INFO L226 Difference]: Without dead ends: 534445 [2023-11-29 00:12:27,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:12:27,137 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 463 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:27,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 1459 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:12:27,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534445 states. [2023-11-29 00:12:31,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534445 to 267305. [2023-11-29 00:12:31,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267305 states, 267304 states have (on average 1.5127794570975368) internal successors, (404372), 267304 states have internal predecessors, (404372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267305 states to 267305 states and 404372 transitions. [2023-11-29 00:12:31,869 INFO L78 Accepts]: Start accepts. Automaton has 267305 states and 404372 transitions. Word has length 235 [2023-11-29 00:12:31,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:31,869 INFO L495 AbstractCegarLoop]: Abstraction has 267305 states and 404372 transitions. [2023-11-29 00:12:31,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:31,869 INFO L276 IsEmpty]: Start isEmpty. Operand 267305 states and 404372 transitions. [2023-11-29 00:12:31,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-11-29 00:12:31,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:31,881 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:12:31,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 00:12:31,881 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:12:31,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:31,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2091744892, now seen corresponding path program 1 times [2023-11-29 00:12:31,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:31,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694626252] [2023-11-29 00:12:31,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:31,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:31,991 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 00:12:31,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:31,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694626252] [2023-11-29 00:12:31,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694626252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:12:31,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:12:31,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:12:31,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795769079] [2023-11-29 00:12:31,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:12:31,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:12:31,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:31,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:12:31,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:12:31,994 INFO L87 Difference]: Start difference. First operand 267305 states and 404372 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:12:34,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:34,684 INFO L93 Difference]: Finished difference Result 789802 states and 1193721 transitions. [2023-11-29 00:12:34,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:12:34,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2023-11-29 00:12:34,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:35,237 INFO L225 Difference]: With dead ends: 789802 [2023-11-29 00:12:35,237 INFO L226 Difference]: Without dead ends: 523000 [2023-11-29 00:12:35,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:12:35,332 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 355 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:35,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 1423 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:12:35,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523000 states. [2023-11-29 00:12:40,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523000 to 522998. [2023-11-29 00:12:41,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522998 states, 522997 states have (on average 1.5019263972833496) internal successors, (785503), 522997 states have internal predecessors, (785503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)