./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label05.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_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/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_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/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_64255194-bf71-459b-8d0d-7ad8a265618e/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 42bba35470723c3ed0bb104994d7663c79c9e18425de9896b18a2c3627effd61 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:02:40,836 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:02:40,895 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 07:02:40,899 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:02:40,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:02:40,920 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:02:40,921 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:02:40,921 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:02:40,922 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:02:40,923 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:02:40,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 07:02:40,924 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 07:02:40,924 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:02:40,925 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:02:40,925 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:02:40,926 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:02:40,926 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 07:02:40,927 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 07:02:40,927 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 07:02:40,928 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 07:02:40,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:02:40,929 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 07:02:40,930 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 07:02:40,930 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 07:02:40,931 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 07:02:40,931 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 07:02:40,932 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:02:40,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:02:40,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:02:40,933 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 07:02:40,933 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 07:02:40,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:02:40,934 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:02:40,934 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 07:02:40,934 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 07:02:40,935 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 07:02:40,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 07:02:40,935 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 07:02:40,935 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 07:02:40,935 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 07:02:40,935 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 07:02:40,936 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 07:02:40,936 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_64255194-bf71-459b-8d0d-7ad8a265618e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42bba35470723c3ed0bb104994d7663c79c9e18425de9896b18a2c3627effd61 [2023-11-29 07:02:41,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:02:41,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:02:41,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:02:41,151 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:02:41,151 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:02:41,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label05.c [2023-11-29 07:02:43,881 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:02:44,285 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:02:44,286 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label05.c [2023-11-29 07:02:44,316 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/data/5e4c0b729/3c676f4213884592bacad02a732c57f8/FLAGc08bd16b6 [2023-11-29 07:02:44,327 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/data/5e4c0b729/3c676f4213884592bacad02a732c57f8 [2023-11-29 07:02:44,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:02:44,331 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:02:44,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:02:44,332 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:02:44,336 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:02:44,337 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:02:44" (1/1) ... [2023-11-29 07:02:44,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e751c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:44, skipping insertion in model container [2023-11-29 07:02:44,338 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:02:44" (1/1) ... [2023-11-29 07:02:44,436 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:02:44,759 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_64255194-bf71-459b-8d0d-7ad8a265618e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label05.c[20426,20439] [2023-11-29 07:02:44,804 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_64255194-bf71-459b-8d0d-7ad8a265618e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label05.c[27362,27375] [2023-11-29 07:02:45,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:02:45,535 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:02:45,578 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_64255194-bf71-459b-8d0d-7ad8a265618e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label05.c[20426,20439] [2023-11-29 07:02:45,593 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_64255194-bf71-459b-8d0d-7ad8a265618e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label05.c[27362,27375] [2023-11-29 07:02:46,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:02:46,193 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:02:46,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46 WrapperNode [2023-11-29 07:02:46,193 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:02:46,194 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:02:46,194 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:02:46,194 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:02:46,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 07:02:46,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 07:02:46,513 INFO L138 Inliner]: procedures = 38, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5213 [2023-11-29 07:02:46,514 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:02:46,514 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:02:46,514 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:02:46,514 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:02:46,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 07:02:46,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 07:02:46,559 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 07:02:46,733 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 07:02:46,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 07:02:46,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 07:02:46,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 07:02:46,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 07:02:46,975 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 07:02:46,991 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 07:02:47,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:02:47,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:02:47,063 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:02:47,063 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:02:47,064 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 07:02:47,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:02:47,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:02:47,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 07:02:47,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 07:02:47,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 07:02:47,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 07:02:47,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:02:47,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:02:47,251 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:02:47,253 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 07:02:51,852 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 07:02:51,911 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 07:02:51,911 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 07:02:51,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:02:51 BoogieIcfgContainer [2023-11-29 07:02:51,912 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 07:02:51,914 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 07:02:51,915 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 07:02:51,917 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 07:02:51,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:02:44" (1/3) ... [2023-11-29 07:02:51,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4ced1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:02:51, skipping insertion in model container [2023-11-29 07:02:51,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (2/3) ... [2023-11-29 07:02:51,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4ced1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:02:51, skipping insertion in model container [2023-11-29 07:02:51,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:02:51" (3/3) ... [2023-11-29 07:02:51,920 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label05.c [2023-11-29 07:02:51,933 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 07:02:51,934 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 07:02:51,993 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 07:02:51,999 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;@64c7aea8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 07:02:51,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 07:02:52,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:02:52,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 07:02:52,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:02:52,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:02:52,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:02:52,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:02:52,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1979929519, now seen corresponding path program 1 times [2023-11-29 07:02:52,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:02:52,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038809977] [2023-11-29 07:02:52,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:02:52,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:02:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:02:52,253 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 07:02:52,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:02:52,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038809977] [2023-11-29 07:02:52,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038809977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:02:52,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:02:52,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:02:52,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127021336] [2023-11-29 07:02:52,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:02:52,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 07:02:52,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:02:52,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 07:02:52,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 07:02:52,287 INFO L87 Difference]: Start difference. First operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:02:52,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:02:52,373 INFO L93 Difference]: Finished difference Result 1676 states and 3294 transitions. [2023-11-29 07:02:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 07:02:52,375 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-29 07:02:52,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:02:52,394 INFO L225 Difference]: With dead ends: 1676 [2023-11-29 07:02:52,394 INFO L226 Difference]: Without dead ends: 861 [2023-11-29 07:02:52,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 07:02:52,404 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:02:52,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1629 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:02:52,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-11-29 07:02:52,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-11-29 07:02:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 859 states have (on average 1.8963911525029105) internal successors, (1629), 860 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:02:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1629 transitions. [2023-11-29 07:02:52,493 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1629 transitions. Word has length 25 [2023-11-29 07:02:52,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:02:52,493 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1629 transitions. [2023-11-29 07:02:52,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:02:52,494 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1629 transitions. [2023-11-29 07:02:52,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 07:02:52,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:02:52,496 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] [2023-11-29 07:02:52,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 07:02:52,496 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:02:52,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:02:52,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1892335951, now seen corresponding path program 1 times [2023-11-29 07:02:52,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:02:52,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866147588] [2023-11-29 07:02:52,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:02:52,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:02:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:02:52,822 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 07:02:52,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:02:52,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866147588] [2023-11-29 07:02:52,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866147588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:02:52,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:02:52,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:02:52,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752325215] [2023-11-29 07:02:52,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:02:52,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:02:52,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:02:52,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:02:52,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:02:52,826 INFO L87 Difference]: Start difference. First operand 861 states and 1629 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:02:52,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:02:52,932 INFO L93 Difference]: Finished difference Result 917 states and 1718 transitions. [2023-11-29 07:02:52,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:02:52,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-29 07:02:52,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:02:52,939 INFO L225 Difference]: With dead ends: 917 [2023-11-29 07:02:52,939 INFO L226 Difference]: Without dead ends: 861 [2023-11-29 07:02:52,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:02:52,941 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 0 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4824 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:02:52,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4824 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:02:52,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-11-29 07:02:52,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-11-29 07:02:52,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 859 states have (on average 1.838183934807916) internal successors, (1579), 860 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:02:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1579 transitions. [2023-11-29 07:02:52,970 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1579 transitions. Word has length 25 [2023-11-29 07:02:52,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:02:52,971 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1579 transitions. [2023-11-29 07:02:52,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:02:52,971 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1579 transitions. [2023-11-29 07:02:52,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 07:02:52,974 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:02:52,974 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] [2023-11-29 07:02:52,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 07:02:52,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:02:52,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:02:52,975 INFO L85 PathProgramCache]: Analyzing trace with hash 2121093177, now seen corresponding path program 1 times [2023-11-29 07:02:52,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:02:52,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559070071] [2023-11-29 07:02:52,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:02:52,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:02:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:02:53,190 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 07:02:53,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:02:53,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559070071] [2023-11-29 07:02:53,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559070071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:02:53,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:02:53,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:02:53,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688715594] [2023-11-29 07:02:53,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:02:53,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:02:53,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:02:53,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:02:53,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:02:53,194 INFO L87 Difference]: Start difference. First operand 861 states and 1579 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:00,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:03:00,129 INFO L93 Difference]: Finished difference Result 3116 states and 5888 transitions. [2023-11-29 07:03:00,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:03:00,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-11-29 07:03:00,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:03:00,145 INFO L225 Difference]: With dead ends: 3116 [2023-11-29 07:03:00,145 INFO L226 Difference]: Without dead ends: 2363 [2023-11-29 07:03:00,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 07:03:00,148 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 2462 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5521 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2462 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 6621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-29 07:03:00,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2462 Valid, 848 Invalid, 6621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5521 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-11-29 07:03:00,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2023-11-29 07:03:00,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2363. [2023-11-29 07:03:00,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2361 states have (on average 1.5692503176620076) internal successors, (3705), 2362 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:00,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3705 transitions. [2023-11-29 07:03:00,213 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3705 transitions. Word has length 59 [2023-11-29 07:03:00,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:03:00,214 INFO L495 AbstractCegarLoop]: Abstraction has 2363 states and 3705 transitions. [2023-11-29 07:03:00,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:00,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3705 transitions. [2023-11-29 07:03:00,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 07:03:00,217 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:03:00,217 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] [2023-11-29 07:03:00,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 07:03:00,218 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:03:00,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:03:00,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1140961112, now seen corresponding path program 1 times [2023-11-29 07:03:00,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:03:00,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123986222] [2023-11-29 07:03:00,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:03:00,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:03:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:03:00,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:03:00,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:03:00,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123986222] [2023-11-29 07:03:00,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123986222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:03:00,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:03:00,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 07:03:00,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184357337] [2023-11-29 07:03:00,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:03:00,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:03:00,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:00,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:03:00,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:03:00,456 INFO L87 Difference]: Start difference. First operand 2363 states and 3705 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:00,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:03:00,969 INFO L93 Difference]: Finished difference Result 3105 states and 4909 transitions. [2023-11-29 07:03:00,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 07:03:00,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-11-29 07:03:00,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:03:00,988 INFO L225 Difference]: With dead ends: 3105 [2023-11-29 07:03:00,988 INFO L226 Difference]: Without dead ends: 3052 [2023-11-29 07:03:00,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-11-29 07:03:00,991 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 11475 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11475 SdHoareTripleChecker+Valid, 5036 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:03:00,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11475 Valid, 5036 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 07:03:00,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2023-11-29 07:03:01,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 2414. [2023-11-29 07:03:01,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2414 states, 2412 states have (on average 1.570480928689884) internal successors, (3788), 2413 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:01,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 3788 transitions. [2023-11-29 07:03:01,063 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 3788 transitions. Word has length 74 [2023-11-29 07:03:01,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:03:01,063 INFO L495 AbstractCegarLoop]: Abstraction has 2414 states and 3788 transitions. [2023-11-29 07:03:01,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:01,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 3788 transitions. [2023-11-29 07:03:01,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 07:03:01,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:03:01,066 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] [2023-11-29 07:03:01,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 07:03:01,066 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:03:01,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:03:01,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1369648648, now seen corresponding path program 1 times [2023-11-29 07:03:01,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:03:01,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749104345] [2023-11-29 07:03:01,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:03:01,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:03:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:03:01,155 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 07:03:01,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:03:01,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749104345] [2023-11-29 07:03:01,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749104345] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:03:01,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:03:01,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:03:01,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087924127] [2023-11-29 07:03:01,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:03:01,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:03:01,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:01,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:03:01,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:03:01,159 INFO L87 Difference]: Start difference. First operand 2414 states and 3788 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:01,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:03:01,204 INFO L93 Difference]: Finished difference Result 2611 states and 4107 transitions. [2023-11-29 07:03:01,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:03:01,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-29 07:03:01,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:03:01,219 INFO L225 Difference]: With dead ends: 2611 [2023-11-29 07:03:01,219 INFO L226 Difference]: Without dead ends: 2507 [2023-11-29 07:03:01,221 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 07:03:01,222 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 1496 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:03:01,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1654 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:03:01,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2023-11-29 07:03:01,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2505. [2023-11-29 07:03:01,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2503 states have (on average 1.5717139432680782) internal successors, (3934), 2504 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:01,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 3934 transitions. [2023-11-29 07:03:01,290 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 3934 transitions. Word has length 76 [2023-11-29 07:03:01,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:03:01,291 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 3934 transitions. [2023-11-29 07:03:01,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:01,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 3934 transitions. [2023-11-29 07:03:01,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 07:03:01,293 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:03:01,293 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] [2023-11-29 07:03:01,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 07:03:01,293 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:03:01,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:03:01,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1367503696, now seen corresponding path program 1 times [2023-11-29 07:03:01,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:03:01,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232625602] [2023-11-29 07:03:01,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:03:01,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:03:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:03:01,682 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 07:03:01,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:03:01,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232625602] [2023-11-29 07:03:01,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232625602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:03:01,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:03:01,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 07:03:01,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89764207] [2023-11-29 07:03:01,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:03:01,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:03:01,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:01,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:03:01,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:03:01,685 INFO L87 Difference]: Start difference. First operand 2505 states and 3934 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:02,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:03:02,057 INFO L93 Difference]: Finished difference Result 2702 states and 4250 transitions. [2023-11-29 07:03:02,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:03:02,058 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-29 07:03:02,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:03:02,070 INFO L225 Difference]: With dead ends: 2702 [2023-11-29 07:03:02,071 INFO L226 Difference]: Without dead ends: 2507 [2023-11-29 07:03:02,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-11-29 07:03:02,073 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 1557 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:03:02,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 2148 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:03:02,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2023-11-29 07:03:02,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2505. [2023-11-29 07:03:02,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2503 states have (on average 1.570914902117459) internal successors, (3932), 2504 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:02,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 3932 transitions. [2023-11-29 07:03:02,120 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 3932 transitions. Word has length 76 [2023-11-29 07:03:02,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:03:02,121 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 3932 transitions. [2023-11-29 07:03:02,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:02,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 3932 transitions. [2023-11-29 07:03:02,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 07:03:02,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:03:02,123 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] [2023-11-29 07:03:02,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 07:03:02,123 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:03:02,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:03:02,124 INFO L85 PathProgramCache]: Analyzing trace with hash 428703861, now seen corresponding path program 1 times [2023-11-29 07:03:02,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:03:02,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044099607] [2023-11-29 07:03:02,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:03:02,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:03:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:03:02,323 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 07:03:02,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:03:02,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044099607] [2023-11-29 07:03:02,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044099607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:03:02,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:03:02,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:03:02,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394758097] [2023-11-29 07:03:02,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:03:02,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:03:02,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:02,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:03:02,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:03:02,326 INFO L87 Difference]: Start difference. First operand 2505 states and 3932 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:02,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:03:02,371 INFO L93 Difference]: Finished difference Result 2513 states and 3941 transitions. [2023-11-29 07:03:02,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:03:02,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-29 07:03:02,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:03:02,382 INFO L225 Difference]: With dead ends: 2513 [2023-11-29 07:03:02,382 INFO L226 Difference]: Without dead ends: 2511 [2023-11-29 07:03:02,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:03:02,384 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4717 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:03:02,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4717 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:03:02,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2023-11-29 07:03:02,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2509. [2023-11-29 07:03:02,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 2507 states have (on average 1.5696051057040288) internal successors, (3935), 2508 states have internal predecessors, (3935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:02,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3935 transitions. [2023-11-29 07:03:02,428 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3935 transitions. Word has length 77 [2023-11-29 07:03:02,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:03:02,428 INFO L495 AbstractCegarLoop]: Abstraction has 2509 states and 3935 transitions. [2023-11-29 07:03:02,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:02,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3935 transitions. [2023-11-29 07:03:02,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 07:03:02,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:03:02,429 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] [2023-11-29 07:03:02,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 07:03:02,429 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:03:02,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:03:02,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1012840592, now seen corresponding path program 1 times [2023-11-29 07:03:02,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:03:02,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809370559] [2023-11-29 07:03:02,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:03:02,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:03:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:03:02,479 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 07:03:02,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:03:02,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809370559] [2023-11-29 07:03:02,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809370559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:03:02,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:03:02,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:03:02,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151423253] [2023-11-29 07:03:02,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:03:02,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:03:02,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:02,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:03:02,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:03:02,481 INFO L87 Difference]: Start difference. First operand 2509 states and 3935 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:02,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:03:02,519 INFO L93 Difference]: Finished difference Result 2719 states and 4268 transitions. [2023-11-29 07:03:02,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:03:02,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 07:03:02,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:03:02,532 INFO L225 Difference]: With dead ends: 2719 [2023-11-29 07:03:02,533 INFO L226 Difference]: Without dead ends: 2611 [2023-11-29 07:03:02,534 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 07:03:02,534 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1514 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:03:02,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1732 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:03:02,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2023-11-29 07:03:02,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2609. [2023-11-29 07:03:02,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 2607 states have (on average 1.5696202531645569) internal successors, (4092), 2608 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:02,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 4092 transitions. [2023-11-29 07:03:02,581 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 4092 transitions. Word has length 78 [2023-11-29 07:03:02,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:03:02,581 INFO L495 AbstractCegarLoop]: Abstraction has 2609 states and 4092 transitions. [2023-11-29 07:03:02,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:02,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 4092 transitions. [2023-11-29 07:03:02,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 07:03:02,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:03:02,582 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] [2023-11-29 07:03:02,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 07:03:02,583 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:03:02,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:03:02,583 INFO L85 PathProgramCache]: Analyzing trace with hash -257456528, now seen corresponding path program 1 times [2023-11-29 07:03:02,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:03:02,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114992245] [2023-11-29 07:03:02,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:03:02,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:03:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:03:02,627 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 07:03:02,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:03:02,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114992245] [2023-11-29 07:03:02,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114992245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:03:02,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:03:02,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:03:02,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134447845] [2023-11-29 07:03:02,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:03:02,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:03:02,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:02,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:03:02,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:03:02,630 INFO L87 Difference]: Start difference. First operand 2609 states and 4092 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:02,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:03:02,673 INFO L93 Difference]: Finished difference Result 3179 states and 4992 transitions. [2023-11-29 07:03:02,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:03:02,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 07:03:02,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:03:02,685 INFO L225 Difference]: With dead ends: 3179 [2023-11-29 07:03:02,686 INFO L226 Difference]: Without dead ends: 2882 [2023-11-29 07:03:02,687 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 07:03:02,687 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1512 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:03:02,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:03:02,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2023-11-29 07:03:02,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2880. [2023-11-29 07:03:02,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 2878 states have (on average 1.5684503127171647) internal successors, (4514), 2879 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:02,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4514 transitions. [2023-11-29 07:03:02,743 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4514 transitions. Word has length 78 [2023-11-29 07:03:02,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:03:02,743 INFO L495 AbstractCegarLoop]: Abstraction has 2880 states and 4514 transitions. [2023-11-29 07:03:02,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:02,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4514 transitions. [2023-11-29 07:03:02,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 07:03:02,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:03:02,744 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] [2023-11-29 07:03:02,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 07:03:02,745 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:03:02,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:03:02,745 INFO L85 PathProgramCache]: Analyzing trace with hash -667843216, now seen corresponding path program 1 times [2023-11-29 07:03:02,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:03:02,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396410535] [2023-11-29 07:03:02,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:03:02,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:03:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:03:02,790 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 07:03:02,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:03:02,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396410535] [2023-11-29 07:03:02,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396410535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:03:02,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:03:02,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:03:02,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657740412] [2023-11-29 07:03:02,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:03:02,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:03:02,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:02,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:03:02,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:03:02,792 INFO L87 Difference]: Start difference. First operand 2880 states and 4514 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:02,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:03:02,846 INFO L93 Difference]: Finished difference Result 3968 states and 6216 transitions. [2023-11-29 07:03:02,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:03:02,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 07:03:02,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:03:02,863 INFO L225 Difference]: With dead ends: 3968 [2023-11-29 07:03:02,864 INFO L226 Difference]: Without dead ends: 3400 [2023-11-29 07:03:02,865 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 07:03:02,866 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1510 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:03:02,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:03:02,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3400 states. [2023-11-29 07:03:02,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3400 to 3398. [2023-11-29 07:03:02,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3398 states, 3396 states have (on average 1.5636042402826855) internal successors, (5310), 3397 states have internal predecessors, (5310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:02,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3398 states to 3398 states and 5310 transitions. [2023-11-29 07:03:02,939 INFO L78 Accepts]: Start accepts. Automaton has 3398 states and 5310 transitions. Word has length 78 [2023-11-29 07:03:02,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:03:02,939 INFO L495 AbstractCegarLoop]: Abstraction has 3398 states and 5310 transitions. [2023-11-29 07:03:02,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:02,940 INFO L276 IsEmpty]: Start isEmpty. Operand 3398 states and 5310 transitions. [2023-11-29 07:03:02,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 07:03:02,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:03:02,941 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] [2023-11-29 07:03:02,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 07:03:02,941 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:03:02,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:03:02,941 INFO L85 PathProgramCache]: Analyzing trace with hash -936426384, now seen corresponding path program 1 times [2023-11-29 07:03:02,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:03:02,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864085260] [2023-11-29 07:03:02,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:03:02,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:03:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:03:02,987 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 07:03:02,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:03:02,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864085260] [2023-11-29 07:03:02,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864085260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:03:02,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:03:02,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:03:02,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831571123] [2023-11-29 07:03:02,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:03:02,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:03:02,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:02,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:03:02,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:03:02,989 INFO L87 Difference]: Start difference. First operand 3398 states and 5310 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:03,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:03:03,058 INFO L93 Difference]: Finished difference Result 5474 states and 8520 transitions. [2023-11-29 07:03:03,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:03:03,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 07:03:03,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:03:03,071 INFO L225 Difference]: With dead ends: 5474 [2023-11-29 07:03:03,072 INFO L226 Difference]: Without dead ends: 4388 [2023-11-29 07:03:03,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:03:03,075 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 1508 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:03:03,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1742 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:03:03,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2023-11-29 07:03:03,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 4386. [2023-11-29 07:03:03,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4384 states have (on average 1.552463503649635) internal successors, (6806), 4385 states have internal predecessors, (6806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:03,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 6806 transitions. [2023-11-29 07:03:03,238 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 6806 transitions. Word has length 78 [2023-11-29 07:03:03,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:03:03,238 INFO L495 AbstractCegarLoop]: Abstraction has 4386 states and 6806 transitions. [2023-11-29 07:03:03,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:03,239 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 6806 transitions. [2023-11-29 07:03:03,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 07:03:03,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:03:03,240 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] [2023-11-29 07:03:03,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 07:03:03,240 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:03:03,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:03:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1522138512, now seen corresponding path program 1 times [2023-11-29 07:03:03,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:03:03,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948793958] [2023-11-29 07:03:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:03:03,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:03:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:03:03,287 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 07:03:03,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:03:03,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948793958] [2023-11-29 07:03:03,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948793958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:03:03,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:03:03,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:03:03,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292915392] [2023-11-29 07:03:03,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:03:03,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:03:03,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:03,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:03:03,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:03:03,289 INFO L87 Difference]: Start difference. First operand 4386 states and 6806 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:03,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:03:03,394 INFO L93 Difference]: Finished difference Result 8342 states and 12840 transitions. [2023-11-29 07:03:03,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:03:03,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 07:03:03,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:03:03,404 INFO L225 Difference]: With dead ends: 8342 [2023-11-29 07:03:03,404 INFO L226 Difference]: Without dead ends: 6268 [2023-11-29 07:03:03,408 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 07:03:03,408 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 1504 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:03:03,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:03:03,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6268 states. [2023-11-29 07:03:03,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6268 to 6266. [2023-11-29 07:03:03,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6266 states, 6264 states have (on average 1.5335249042145593) internal successors, (9606), 6265 states have internal predecessors, (9606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6266 states to 6266 states and 9606 transitions. [2023-11-29 07:03:03,542 INFO L78 Accepts]: Start accepts. Automaton has 6266 states and 9606 transitions. Word has length 78 [2023-11-29 07:03:03,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:03:03,543 INFO L495 AbstractCegarLoop]: Abstraction has 6266 states and 9606 transitions. [2023-11-29 07:03:03,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:03,543 INFO L276 IsEmpty]: Start isEmpty. Operand 6266 states and 9606 transitions. [2023-11-29 07:03:03,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 07:03:03,543 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:03:03,544 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] [2023-11-29 07:03:03,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 07:03:03,544 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:03:03,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:03:03,544 INFO L85 PathProgramCache]: Analyzing trace with hash -633405072, now seen corresponding path program 1 times [2023-11-29 07:03:03,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:03:03,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969528693] [2023-11-29 07:03:03,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:03:03,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:03:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:03:03,589 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 07:03:03,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:03:03,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969528693] [2023-11-29 07:03:03,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969528693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:03:03,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:03:03,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:03:03,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211517067] [2023-11-29 07:03:03,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:03:03,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:03:03,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:03,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:03:03,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:03:03,591 INFO L87 Difference]: Start difference. First operand 6266 states and 9606 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:03,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:03:03,803 INFO L93 Difference]: Finished difference Result 13790 states and 20904 transitions. [2023-11-29 07:03:03,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:03:03,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 07:03:03,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:03:03,822 INFO L225 Difference]: With dead ends: 13790 [2023-11-29 07:03:03,823 INFO L226 Difference]: Without dead ends: 9836 [2023-11-29 07:03:03,830 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 07:03:03,830 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1502 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:03:03,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:03:03,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9836 states. [2023-11-29 07:03:04,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9836 to 9834. [2023-11-29 07:03:04,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9834 states, 9832 states have (on average 1.507526444263629) internal successors, (14822), 9833 states have internal predecessors, (14822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:04,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9834 states to 9834 states and 14822 transitions. [2023-11-29 07:03:04,225 INFO L78 Accepts]: Start accepts. Automaton has 9834 states and 14822 transitions. Word has length 78 [2023-11-29 07:03:04,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:03:04,225 INFO L495 AbstractCegarLoop]: Abstraction has 9834 states and 14822 transitions. [2023-11-29 07:03:04,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:04,226 INFO L276 IsEmpty]: Start isEmpty. Operand 9834 states and 14822 transitions. [2023-11-29 07:03:04,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 07:03:04,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:03:04,227 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] [2023-11-29 07:03:04,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 07:03:04,227 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:03:04,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:03:04,228 INFO L85 PathProgramCache]: Analyzing trace with hash -896482448, now seen corresponding path program 1 times [2023-11-29 07:03:04,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:03:04,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991013326] [2023-11-29 07:03:04,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:03:04,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:03:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:03:04,297 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 07:03:04,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:03:04,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991013326] [2023-11-29 07:03:04,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991013326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:03:04,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:03:04,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:03:04,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010858049] [2023-11-29 07:03:04,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:03:04,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:03:04,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:04,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:03:04,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:03:04,300 INFO L87 Difference]: Start difference. First operand 9834 states and 14822 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:04,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:03:04,616 INFO L93 Difference]: Finished difference Result 24110 states and 35880 transitions. [2023-11-29 07:03:04,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:03:04,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 07:03:04,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:03:04,639 INFO L225 Difference]: With dead ends: 24110 [2023-11-29 07:03:04,639 INFO L226 Difference]: Without dead ends: 16588 [2023-11-29 07:03:04,648 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 07:03:04,648 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1506 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:03:04,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1744 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:03:04,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16588 states. [2023-11-29 07:03:05,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16588 to 16586. [2023-11-29 07:03:05,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16586 states, 16584 states have (on average 1.4764833574529668) internal successors, (24486), 16585 states have internal predecessors, (24486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:05,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16586 states to 16586 states and 24486 transitions. [2023-11-29 07:03:05,060 INFO L78 Accepts]: Start accepts. Automaton has 16586 states and 24486 transitions. Word has length 78 [2023-11-29 07:03:05,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:03:05,060 INFO L495 AbstractCegarLoop]: Abstraction has 16586 states and 24486 transitions. [2023-11-29 07:03:05,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:05,061 INFO L276 IsEmpty]: Start isEmpty. Operand 16586 states and 24486 transitions. [2023-11-29 07:03:05,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 07:03:05,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:03:05,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:03:05,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 07:03:05,064 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:03:05,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:03:05,065 INFO L85 PathProgramCache]: Analyzing trace with hash 758003716, now seen corresponding path program 1 times [2023-11-29 07:03:05,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:03:05,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509886600] [2023-11-29 07:03:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:03:05,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:03:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:03:05,250 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:03:05,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:03:05,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509886600] [2023-11-29 07:03:05,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509886600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:03:05,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:03:05,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 07:03:05,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791545784] [2023-11-29 07:03:05,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:03:05,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:03:05,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:05,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:03:05,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:03:05,253 INFO L87 Difference]: Start difference. First operand 16586 states and 24486 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:07,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:03:07,530 INFO L93 Difference]: Finished difference Result 115098 states and 168430 transitions. [2023-11-29 07:03:07,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:03:07,531 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 07:03:07,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:03:07,667 INFO L225 Difference]: With dead ends: 115098 [2023-11-29 07:03:07,667 INFO L226 Difference]: Without dead ends: 105112 [2023-11-29 07:03:07,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 07:03:07,688 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 9843 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9843 SdHoareTripleChecker+Valid, 4635 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:03:07,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9843 Valid, 4635 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:03:07,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105112 states. [2023-11-29 07:03:09,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105112 to 28746. [2023-11-29 07:03:09,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28746 states, 28744 states have (on average 1.4641664347342054) internal successors, (42086), 28745 states have internal predecessors, (42086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:09,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28746 states to 28746 states and 42086 transitions. [2023-11-29 07:03:09,124 INFO L78 Accepts]: Start accepts. Automaton has 28746 states and 42086 transitions. Word has length 100 [2023-11-29 07:03:09,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:03:09,124 INFO L495 AbstractCegarLoop]: Abstraction has 28746 states and 42086 transitions. [2023-11-29 07:03:09,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:09,125 INFO L276 IsEmpty]: Start isEmpty. Operand 28746 states and 42086 transitions. [2023-11-29 07:03:09,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 07:03:09,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:03:09,130 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:03:09,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 07:03:09,130 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:03:09,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:03:09,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1513387780, now seen corresponding path program 1 times [2023-11-29 07:03:09,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:03:09,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457724341] [2023-11-29 07:03:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:03:09,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:03:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:03:09,317 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 07:03:09,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:03:09,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457724341] [2023-11-29 07:03:09,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457724341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:03:09,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:03:09,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 07:03:09,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493216438] [2023-11-29 07:03:09,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:03:09,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:03:09,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:09,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:03:09,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:03:09,320 INFO L87 Difference]: Start difference. First operand 28746 states and 42086 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:12,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:03:12,523 INFO L93 Difference]: Finished difference Result 129370 states and 189166 transitions. [2023-11-29 07:03:12,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:03:12,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 07:03:12,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:03:12,683 INFO L225 Difference]: With dead ends: 129370 [2023-11-29 07:03:12,684 INFO L226 Difference]: Without dead ends: 115096 [2023-11-29 07:03:12,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 07:03:12,708 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 9847 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9847 SdHoareTripleChecker+Valid, 4570 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:03:12,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9847 Valid, 4570 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:03:12,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115096 states. [2023-11-29 07:03:14,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115096 to 48010. [2023-11-29 07:03:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48010 states, 48008 states have (on average 1.4565489085152474) internal successors, (69926), 48009 states have internal predecessors, (69926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:14,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48010 states to 48010 states and 69926 transitions. [2023-11-29 07:03:14,750 INFO L78 Accepts]: Start accepts. Automaton has 48010 states and 69926 transitions. Word has length 100 [2023-11-29 07:03:14,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:03:14,750 INFO L495 AbstractCegarLoop]: Abstraction has 48010 states and 69926 transitions. [2023-11-29 07:03:14,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:14,750 INFO L276 IsEmpty]: Start isEmpty. Operand 48010 states and 69926 transitions. [2023-11-29 07:03:14,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 07:03:14,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:03:14,759 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:03:14,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 07:03:14,760 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:03:14,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:03:14,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1103001092, now seen corresponding path program 1 times [2023-11-29 07:03:14,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:03:14,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32848796] [2023-11-29 07:03:14,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:03:14,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:03:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:03:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 07:03:15,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:03:15,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32848796] [2023-11-29 07:03:15,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32848796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:03:15,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:03:15,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 07:03:15,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288561478] [2023-11-29 07:03:15,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:03:15,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:03:15,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:15,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:03:15,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:03:15,042 INFO L87 Difference]: Start difference. First operand 48010 states and 69926 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:19,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:03:19,160 INFO L93 Difference]: Finished difference Result 143642 states and 209838 transitions. [2023-11-29 07:03:19,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:03:19,160 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 07:03:19,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:03:19,305 INFO L225 Difference]: With dead ends: 143642 [2023-11-29 07:03:19,305 INFO L226 Difference]: Without dead ends: 129368 [2023-11-29 07:03:19,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 07:03:19,335 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 9866 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9866 SdHoareTripleChecker+Valid, 4536 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:03:19,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9866 Valid, 4536 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:03:19,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129368 states. [2023-11-29 07:03:22,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129368 to 62282. [2023-11-29 07:03:22,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62282 states, 62280 states have (on average 1.4546885035324342) internal successors, (90598), 62281 states have internal predecessors, (90598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62282 states to 62282 states and 90598 transitions. [2023-11-29 07:03:22,370 INFO L78 Accepts]: Start accepts. Automaton has 62282 states and 90598 transitions. Word has length 100 [2023-11-29 07:03:22,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:03:22,370 INFO L495 AbstractCegarLoop]: Abstraction has 62282 states and 90598 transitions. [2023-11-29 07:03:22,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:22,371 INFO L276 IsEmpty]: Start isEmpty. Operand 62282 states and 90598 transitions. [2023-11-29 07:03:22,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 07:03:22,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:03:22,377 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:03:22,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 07:03:22,377 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:03:22,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:03:22,378 INFO L85 PathProgramCache]: Analyzing trace with hash 834417924, now seen corresponding path program 1 times [2023-11-29 07:03:22,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:03:22,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482117100] [2023-11-29 07:03:22,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:03:22,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:03:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:03:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 07:03:22,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:03:22,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482117100] [2023-11-29 07:03:22,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482117100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:03:22,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:03:22,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 07:03:22,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65756695] [2023-11-29 07:03:22,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:03:22,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:03:22,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:22,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:03:22,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:03:22,600 INFO L87 Difference]: Start difference. First operand 62282 states and 90598 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:27,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:03:27,542 INFO L93 Difference]: Finished difference Result 157914 states and 230510 transitions. [2023-11-29 07:03:27,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:03:27,543 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 07:03:27,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:03:27,698 INFO L225 Difference]: With dead ends: 157914 [2023-11-29 07:03:27,698 INFO L226 Difference]: Without dead ends: 143640 [2023-11-29 07:03:27,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 07:03:27,723 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 9955 mSDsluCounter, 2798 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9955 SdHoareTripleChecker+Valid, 4453 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:03:27,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9955 Valid, 4453 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:03:27,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143640 states. [2023-11-29 07:03:30,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143640 to 76554. [2023-11-29 07:03:30,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76554 states, 76552 states have (on average 1.45352178911067) internal successors, (111270), 76553 states have internal predecessors, (111270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:31,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76554 states to 76554 states and 111270 transitions. [2023-11-29 07:03:31,104 INFO L78 Accepts]: Start accepts. Automaton has 76554 states and 111270 transitions. Word has length 100 [2023-11-29 07:03:31,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:03:31,104 INFO L495 AbstractCegarLoop]: Abstraction has 76554 states and 111270 transitions. [2023-11-29 07:03:31,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:31,104 INFO L276 IsEmpty]: Start isEmpty. Operand 76554 states and 111270 transitions. [2023-11-29 07:03:31,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 07:03:31,110 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:03:31,111 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:03:31,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 07:03:31,111 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:03:31,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:03:31,111 INFO L85 PathProgramCache]: Analyzing trace with hash 248705796, now seen corresponding path program 1 times [2023-11-29 07:03:31,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:03:31,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752107162] [2023-11-29 07:03:31,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:03:31,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:03:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:03:31,327 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 07:03:31,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:03:31,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752107162] [2023-11-29 07:03:31,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752107162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:03:31,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:03:31,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 07:03:31,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302831244] [2023-11-29 07:03:31,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:03:31,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:03:31,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:31,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:03:31,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:03:31,330 INFO L87 Difference]: Start difference. First operand 76554 states and 111270 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:37,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:03:37,411 INFO L93 Difference]: Finished difference Result 172186 states and 251182 transitions. [2023-11-29 07:03:37,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:03:37,412 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 07:03:37,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:03:37,587 INFO L225 Difference]: With dead ends: 172186 [2023-11-29 07:03:37,587 INFO L226 Difference]: Without dead ends: 157912 [2023-11-29 07:03:37,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 07:03:37,611 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 10038 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10038 SdHoareTripleChecker+Valid, 4489 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:03:37,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10038 Valid, 4489 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:03:37,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157912 states. [2023-11-29 07:03:41,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157912 to 90826. [2023-11-29 07:03:41,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90826 states, 90824 states have (on average 1.4527217475557122) internal successors, (131942), 90825 states have internal predecessors, (131942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:41,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90826 states to 90826 states and 131942 transitions. [2023-11-29 07:03:41,278 INFO L78 Accepts]: Start accepts. Automaton has 90826 states and 131942 transitions. Word has length 100 [2023-11-29 07:03:41,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:03:41,278 INFO L495 AbstractCegarLoop]: Abstraction has 90826 states and 131942 transitions. [2023-11-29 07:03:41,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:41,279 INFO L276 IsEmpty]: Start isEmpty. Operand 90826 states and 131942 transitions. [2023-11-29 07:03:41,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 07:03:41,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:03:41,284 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:03:41,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 07:03:41,284 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:03:41,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:03:41,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1137439236, now seen corresponding path program 1 times [2023-11-29 07:03:41,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:03:41,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928211005] [2023-11-29 07:03:41,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:03:41,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:03:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:03:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 07:03:41,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:03:41,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928211005] [2023-11-29 07:03:41,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928211005] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:03:41,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:03:41,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 07:03:41,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431071162] [2023-11-29 07:03:41,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:03:41,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:03:41,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:41,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:03:41,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:03:41,497 INFO L87 Difference]: Start difference. First operand 90826 states and 131942 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:47,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:03:47,675 INFO L93 Difference]: Finished difference Result 186458 states and 271854 transitions. [2023-11-29 07:03:47,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:03:47,676 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 07:03:47,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:03:47,864 INFO L225 Difference]: With dead ends: 186458 [2023-11-29 07:03:47,865 INFO L226 Difference]: Without dead ends: 172184 [2023-11-29 07:03:47,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 07:03:47,890 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 9909 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9909 SdHoareTripleChecker+Valid, 4520 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:03:47,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9909 Valid, 4520 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:03:47,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172184 states. [2023-11-29 07:03:52,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172184 to 105098. [2023-11-29 07:03:52,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105098 states, 105096 states have (on average 1.4521389967268021) internal successors, (152614), 105097 states have internal predecessors, (152614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:52,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105098 states to 105098 states and 152614 transitions. [2023-11-29 07:03:52,370 INFO L78 Accepts]: Start accepts. Automaton has 105098 states and 152614 transitions. Word has length 100 [2023-11-29 07:03:52,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:03:52,371 INFO L495 AbstractCegarLoop]: Abstraction has 105098 states and 152614 transitions. [2023-11-29 07:03:52,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:52,371 INFO L276 IsEmpty]: Start isEmpty. Operand 105098 states and 152614 transitions. [2023-11-29 07:03:52,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 07:03:52,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:03:52,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:03:52,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 07:03:52,375 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:03:52,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:03:52,376 INFO L85 PathProgramCache]: Analyzing trace with hash 874361860, now seen corresponding path program 1 times [2023-11-29 07:03:52,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:03:52,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008491832] [2023-11-29 07:03:52,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:03:52,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:03:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:03:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 07:03:52,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:03:52,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008491832] [2023-11-29 07:03:52,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008491832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:03:52,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:03:52,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 07:03:52,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244366272] [2023-11-29 07:03:52,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:03:52,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:03:52,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:52,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:03:52,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:03:52,534 INFO L87 Difference]: Start difference. First operand 105098 states and 152614 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:03:59,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:03:59,112 INFO L93 Difference]: Finished difference Result 200730 states and 292526 transitions. [2023-11-29 07:03:59,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:03:59,113 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 07:03:59,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:03:59,322 INFO L225 Difference]: With dead ends: 200730 [2023-11-29 07:03:59,322 INFO L226 Difference]: Without dead ends: 186456 [2023-11-29 07:03:59,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 07:03:59,353 INFO L413 NwaCegarLoop]: 1652 mSDtfsCounter, 9793 mSDsluCounter, 3043 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9793 SdHoareTripleChecker+Valid, 4695 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:03:59,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9793 Valid, 4695 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:03:59,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186456 states. [2023-11-29 07:04:04,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186456 to 119370. [2023-11-29 07:04:04,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119370 states, 119368 states have (on average 1.4516955968098653) internal successors, (173286), 119369 states have internal predecessors, (173286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:04,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119370 states to 119370 states and 173286 transitions. [2023-11-29 07:04:04,574 INFO L78 Accepts]: Start accepts. Automaton has 119370 states and 173286 transitions. Word has length 100 [2023-11-29 07:04:04,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:04:04,574 INFO L495 AbstractCegarLoop]: Abstraction has 119370 states and 173286 transitions. [2023-11-29 07:04:04,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:04,574 INFO L276 IsEmpty]: Start isEmpty. Operand 119370 states and 173286 transitions. [2023-11-29 07:04:04,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 07:04:04,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:04:04,579 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:04:04,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 07:04:04,579 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:04:04,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:04:04,580 INFO L85 PathProgramCache]: Analyzing trace with hash 323697040, now seen corresponding path program 1 times [2023-11-29 07:04:04,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:04:04,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395673389] [2023-11-29 07:04:04,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:04,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:04:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:04,660 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:04,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:04:04,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395673389] [2023-11-29 07:04:04,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395673389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:04:04,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:04:04,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:04:04,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259865651] [2023-11-29 07:04:04,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:04:04,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:04:04,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:04:04,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:04:04,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:04:04,662 INFO L87 Difference]: Start difference. First operand 119370 states and 173286 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:09,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:04:09,229 INFO L93 Difference]: Finished difference Result 236430 states and 342952 transitions. [2023-11-29 07:04:09,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:04:09,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-11-29 07:04:09,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:04:09,361 INFO L225 Difference]: With dead ends: 236430 [2023-11-29 07:04:09,361 INFO L226 Difference]: Without dead ends: 119372 [2023-11-29 07:04:09,391 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 07:04:09,392 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 61 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:04:09,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3191 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:04:09,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119372 states. [2023-11-29 07:04:14,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119372 to 119370. [2023-11-29 07:04:14,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119370 states, 119368 states have (on average 1.4385597480061658) internal successors, (171718), 119369 states have internal predecessors, (171718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:14,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119370 states to 119370 states and 171718 transitions. [2023-11-29 07:04:14,368 INFO L78 Accepts]: Start accepts. Automaton has 119370 states and 171718 transitions. Word has length 101 [2023-11-29 07:04:14,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:04:14,368 INFO L495 AbstractCegarLoop]: Abstraction has 119370 states and 171718 transitions. [2023-11-29 07:04:14,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:14,368 INFO L276 IsEmpty]: Start isEmpty. Operand 119370 states and 171718 transitions. [2023-11-29 07:04:14,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 07:04:14,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:04:14,371 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 07:04:14,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 07:04:14,372 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:04:14,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:04:14,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1748792308, now seen corresponding path program 1 times [2023-11-29 07:04:14,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:04:14,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320969937] [2023-11-29 07:04:14,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:14,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:04:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:14,450 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:14,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:04:14,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320969937] [2023-11-29 07:04:14,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320969937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:04:14,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:04:14,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:04:14,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948879940] [2023-11-29 07:04:14,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:04:14,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:04:14,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:04:14,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:04:14,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:04:14,452 INFO L87 Difference]: Start difference. First operand 119370 states and 171718 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:16,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:04:16,005 INFO L93 Difference]: Finished difference Result 161828 states and 233215 transitions. [2023-11-29 07:04:16,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:04:16,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-11-29 07:04:16,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:04:16,050 INFO L225 Difference]: With dead ends: 161828 [2023-11-29 07:04:16,050 INFO L226 Difference]: Without dead ends: 44770 [2023-11-29 07:04:16,092 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 07:04:16,093 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 55 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:04:16,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3188 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:04:16,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44770 states. [2023-11-29 07:04:17,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44770 to 44763. [2023-11-29 07:04:17,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44763 states, 44761 states have (on average 1.442483411898751) internal successors, (64567), 44762 states have internal predecessors, (64567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:17,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44763 states to 44763 states and 64567 transitions. [2023-11-29 07:04:17,942 INFO L78 Accepts]: Start accepts. Automaton has 44763 states and 64567 transitions. Word has length 102 [2023-11-29 07:04:17,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:04:17,942 INFO L495 AbstractCegarLoop]: Abstraction has 44763 states and 64567 transitions. [2023-11-29 07:04:17,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:17,942 INFO L276 IsEmpty]: Start isEmpty. Operand 44763 states and 64567 transitions. [2023-11-29 07:04:17,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 07:04:17,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:04:17,944 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 07:04:17,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 07:04:17,945 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:04:17,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:04:17,945 INFO L85 PathProgramCache]: Analyzing trace with hash -958995234, now seen corresponding path program 1 times [2023-11-29 07:04:17,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:04:17,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547372719] [2023-11-29 07:04:17,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:17,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:04:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:18,243 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:18,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:04:18,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547372719] [2023-11-29 07:04:18,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547372719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:04:18,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:04:18,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:04:18,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522802901] [2023-11-29 07:04:18,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:04:18,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:04:18,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:04:18,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:04:18,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:04:18,245 INFO L87 Difference]: Start difference. First operand 44763 states and 64567 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:19,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:04:19,117 INFO L93 Difference]: Finished difference Result 65983 states and 95033 transitions. [2023-11-29 07:04:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:04:19,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-11-29 07:04:19,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:04:19,136 INFO L225 Difference]: With dead ends: 65983 [2023-11-29 07:04:19,136 INFO L226 Difference]: Without dead ends: 23549 [2023-11-29 07:04:19,151 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 07:04:19,152 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 57 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:04:19,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 3167 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:04:19,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23549 states. [2023-11-29 07:04:19,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23549 to 23547. [2023-11-29 07:04:19,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23547 states, 23545 states have (on average 1.436865576555532) internal successors, (33831), 23546 states have internal predecessors, (33831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:19,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23547 states to 23547 states and 33831 transitions. [2023-11-29 07:04:19,952 INFO L78 Accepts]: Start accepts. Automaton has 23547 states and 33831 transitions. Word has length 103 [2023-11-29 07:04:19,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:04:19,952 INFO L495 AbstractCegarLoop]: Abstraction has 23547 states and 33831 transitions. [2023-11-29 07:04:19,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:19,952 INFO L276 IsEmpty]: Start isEmpty. Operand 23547 states and 33831 transitions. [2023-11-29 07:04:19,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-29 07:04:19,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:04:19,954 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 07:04:19,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 07:04:19,954 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:04:19,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:04:19,955 INFO L85 PathProgramCache]: Analyzing trace with hash 2052594092, now seen corresponding path program 1 times [2023-11-29 07:04:19,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:04:19,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052834236] [2023-11-29 07:04:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:19,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:04:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:20,061 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:20,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:04:20,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052834236] [2023-11-29 07:04:20,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052834236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:04:20,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:04:20,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:04:20,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519282714] [2023-11-29 07:04:20,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:04:20,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:04:20,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:04:20,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:04:20,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:04:20,063 INFO L87 Difference]: Start difference. First operand 23547 states and 33831 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:20,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:04:20,506 INFO L93 Difference]: Finished difference Result 34159 states and 48929 transitions. [2023-11-29 07:04:20,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:04:20,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-11-29 07:04:20,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:04:20,519 INFO L225 Difference]: With dead ends: 34159 [2023-11-29 07:04:20,519 INFO L226 Difference]: Without dead ends: 12941 [2023-11-29 07:04:20,527 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 07:04:20,527 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 54 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:04:20,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3152 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:04:20,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12941 states. [2023-11-29 07:04:20,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12941 to 12939. [2023-11-29 07:04:20,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12939 states, 12937 states have (on average 1.4376594264512639) internal successors, (18599), 12938 states have internal predecessors, (18599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:20,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12939 states to 12939 states and 18599 transitions. [2023-11-29 07:04:20,944 INFO L78 Accepts]: Start accepts. Automaton has 12939 states and 18599 transitions. Word has length 105 [2023-11-29 07:04:20,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:04:20,944 INFO L495 AbstractCegarLoop]: Abstraction has 12939 states and 18599 transitions. [2023-11-29 07:04:20,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:20,945 INFO L276 IsEmpty]: Start isEmpty. Operand 12939 states and 18599 transitions. [2023-11-29 07:04:20,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 07:04:20,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:04:20,946 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 07:04:20,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 07:04:20,946 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:04:20,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:04:20,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1394063354, now seen corresponding path program 1 times [2023-11-29 07:04:20,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:04:20,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135632873] [2023-11-29 07:04:20,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:20,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:04:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:21,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:04:21,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135632873] [2023-11-29 07:04:21,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135632873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:04:21,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:04:21,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:04:21,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412513736] [2023-11-29 07:04:21,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:04:21,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:04:21,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:04:21,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:04:21,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:04:21,050 INFO L87 Difference]: Start difference. First operand 12939 states and 18599 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:21,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:04:21,320 INFO L93 Difference]: Finished difference Result 18247 states and 26081 transitions. [2023-11-29 07:04:21,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:04:21,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-11-29 07:04:21,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:04:21,327 INFO L225 Difference]: With dead ends: 18247 [2023-11-29 07:04:21,327 INFO L226 Difference]: Without dead ends: 7637 [2023-11-29 07:04:21,331 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 07:04:21,331 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 51 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:04:21,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 3137 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:04:21,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7637 states. [2023-11-29 07:04:21,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7637 to 7635. [2023-11-29 07:04:21,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7635 states, 7633 states have (on average 1.4477924800209616) internal successors, (11051), 7634 states have internal predecessors, (11051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:21,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7635 states to 7635 states and 11051 transitions. [2023-11-29 07:04:21,561 INFO L78 Accepts]: Start accepts. Automaton has 7635 states and 11051 transitions. Word has length 107 [2023-11-29 07:04:21,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:04:21,561 INFO L495 AbstractCegarLoop]: Abstraction has 7635 states and 11051 transitions. [2023-11-29 07:04:21,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:21,561 INFO L276 IsEmpty]: Start isEmpty. Operand 7635 states and 11051 transitions. [2023-11-29 07:04:21,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 07:04:21,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:04:21,562 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 07:04:21,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 07:04:21,562 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:04:21,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:04:21,563 INFO L85 PathProgramCache]: Analyzing trace with hash 670474184, now seen corresponding path program 1 times [2023-11-29 07:04:21,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:04:21,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367058890] [2023-11-29 07:04:21,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:21,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:04:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:21,657 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:21,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:04:21,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367058890] [2023-11-29 07:04:21,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367058890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:04:21,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:04:21,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:04:21,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000981539] [2023-11-29 07:04:21,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:04:21,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:04:21,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:04:21,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:04:21,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:04:21,659 INFO L87 Difference]: Start difference. First operand 7635 states and 11051 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:21,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:04:21,837 INFO L93 Difference]: Finished difference Result 10291 states and 14759 transitions. [2023-11-29 07:04:21,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:04:21,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-11-29 07:04:21,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:04:21,844 INFO L225 Difference]: With dead ends: 10291 [2023-11-29 07:04:21,844 INFO L226 Difference]: Without dead ends: 4985 [2023-11-29 07:04:21,847 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 07:04:21,848 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 48 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:04:21,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3122 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:04:21,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4985 states. [2023-11-29 07:04:21,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4985 to 4983. [2023-11-29 07:04:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4983 states, 4981 states have (on average 1.46777755470789) internal successors, (7311), 4982 states have internal predecessors, (7311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4983 states to 4983 states and 7311 transitions. [2023-11-29 07:04:22,000 INFO L78 Accepts]: Start accepts. Automaton has 4983 states and 7311 transitions. Word has length 109 [2023-11-29 07:04:22,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:04:22,000 INFO L495 AbstractCegarLoop]: Abstraction has 4983 states and 7311 transitions. [2023-11-29 07:04:22,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:22,001 INFO L276 IsEmpty]: Start isEmpty. Operand 4983 states and 7311 transitions. [2023-11-29 07:04:22,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-29 07:04:22,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:04:22,002 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 07:04:22,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 07:04:22,002 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:04:22,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:04:22,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1332588822, now seen corresponding path program 1 times [2023-11-29 07:04:22,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:04:22,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876910621] [2023-11-29 07:04:22,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:22,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:04:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:22,103 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:22,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:04:22,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876910621] [2023-11-29 07:04:22,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876910621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:04:22,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:04:22,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:04:22,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178118186] [2023-11-29 07:04:22,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:04:22,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:04:22,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:04:22,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:04:22,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:04:22,105 INFO L87 Difference]: Start difference. First operand 4983 states and 7311 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:22,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:04:22,203 INFO L93 Difference]: Finished difference Result 6313 states and 9149 transitions. [2023-11-29 07:04:22,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:04:22,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-11-29 07:04:22,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:04:22,206 INFO L225 Difference]: With dead ends: 6313 [2023-11-29 07:04:22,207 INFO L226 Difference]: Without dead ends: 3659 [2023-11-29 07:04:22,208 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 07:04:22,208 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 45 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:04:22,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3107 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:04:22,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2023-11-29 07:04:22,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3657. [2023-11-29 07:04:22,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3657 states, 3655 states have (on average 1.493296853625171) internal successors, (5458), 3656 states have internal predecessors, (5458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3657 states to 3657 states and 5458 transitions. [2023-11-29 07:04:22,286 INFO L78 Accepts]: Start accepts. Automaton has 3657 states and 5458 transitions. Word has length 111 [2023-11-29 07:04:22,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:04:22,286 INFO L495 AbstractCegarLoop]: Abstraction has 3657 states and 5458 transitions. [2023-11-29 07:04:22,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:22,286 INFO L276 IsEmpty]: Start isEmpty. Operand 3657 states and 5458 transitions. [2023-11-29 07:04:22,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 07:04:22,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:04:22,288 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] [2023-11-29 07:04:22,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 07:04:22,288 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:04:22,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:04:22,288 INFO L85 PathProgramCache]: Analyzing trace with hash -309474332, now seen corresponding path program 1 times [2023-11-29 07:04:22,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:04:22,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109307914] [2023-11-29 07:04:22,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:22,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:04:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:04:22,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:04:22,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109307914] [2023-11-29 07:04:22,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109307914] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:04:22,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934049978] [2023-11-29 07:04:22,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:22,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:04:22,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:04:22,414 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:04:22,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 07:04:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:22,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 07:04:22,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:04:22,731 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:04:22,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:04:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:04:23,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934049978] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:04:23,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:04:23,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-11-29 07:04:23,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142937137] [2023-11-29 07:04:23,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:04:23,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 07:04:23,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:04:23,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 07:04:23,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-11-29 07:04:23,218 INFO L87 Difference]: Start difference. First operand 3657 states and 5458 transitions. Second operand has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:23,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:04:23,487 INFO L93 Difference]: Finished difference Result 6864 states and 9759 transitions. [2023-11-29 07:04:23,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 07:04:23,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have 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 07:04:23,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:04:23,491 INFO L225 Difference]: With dead ends: 6864 [2023-11-29 07:04:23,492 INFO L226 Difference]: Without dead ends: 5536 [2023-11-29 07:04:23,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:04:23,493 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 3041 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3474 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:04:23,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3474 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:04:23,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5536 states. [2023-11-29 07:04:23,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5536 to 5449. [2023-11-29 07:04:23,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5449 states, 5447 states have (on average 1.4228015421332845) internal successors, (7750), 5448 states have internal predecessors, (7750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:23,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5449 states to 5449 states and 7750 transitions. [2023-11-29 07:04:23,660 INFO L78 Accepts]: Start accepts. Automaton has 5449 states and 7750 transitions. Word has length 113 [2023-11-29 07:04:23,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:04:23,660 INFO L495 AbstractCegarLoop]: Abstraction has 5449 states and 7750 transitions. [2023-11-29 07:04:23,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 5449 states and 7750 transitions. [2023-11-29 07:04:23,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 07:04:23,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:04:23,661 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 07:04:23,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 07:04:23,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 07:04:23,862 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:04:23,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:04:23,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1672330440, now seen corresponding path program 1 times [2023-11-29 07:04:23,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:04:23,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518441947] [2023-11-29 07:04:23,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:23,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:04:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:25,265 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:25,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:04:25,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518441947] [2023-11-29 07:04:25,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518441947] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:04:25,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784440582] [2023-11-29 07:04:25,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:25,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:04:25,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:04:25,267 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:04:25,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 07:04:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:25,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 07:04:25,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:04:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:25,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:04:27,376 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:27,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784440582] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:04:27,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:04:27,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-11-29 07:04:27,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406530085] [2023-11-29 07:04:27,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:04:27,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 07:04:27,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:04:27,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 07:04:27,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2023-11-29 07:04:27,379 INFO L87 Difference]: Start difference. First operand 5449 states and 7750 transitions. Second operand has 28 states, 28 states have (on average 10.535714285714286) internal successors, (295), 27 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:30,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:04:30,274 INFO L93 Difference]: Finished difference Result 18766 states and 25226 transitions. [2023-11-29 07:04:30,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 07:04:30,274 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.535714285714286) internal successors, (295), 27 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-11-29 07:04:30,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:04:30,286 INFO L225 Difference]: With dead ends: 18766 [2023-11-29 07:04:30,286 INFO L226 Difference]: Without dead ends: 15761 [2023-11-29 07:04:30,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=665, Invalid=2757, Unknown=0, NotChecked=0, Total=3422 [2023-11-29 07:04:30,291 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 21320 mSDsluCounter, 8207 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21320 SdHoareTripleChecker+Valid, 9746 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 07:04:30,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21320 Valid, 9746 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 07:04:30,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15761 states. [2023-11-29 07:04:30,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15761 to 14805. [2023-11-29 07:04:30,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14805 states, 14803 states have (on average 1.3499966223062894) internal successors, (19984), 14804 states have internal predecessors, (19984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:30,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14805 states to 14805 states and 19984 transitions. [2023-11-29 07:04:30,919 INFO L78 Accepts]: Start accepts. Automaton has 14805 states and 19984 transitions. Word has length 114 [2023-11-29 07:04:30,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:04:30,919 INFO L495 AbstractCegarLoop]: Abstraction has 14805 states and 19984 transitions. [2023-11-29 07:04:30,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.535714285714286) internal successors, (295), 27 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:30,919 INFO L276 IsEmpty]: Start isEmpty. Operand 14805 states and 19984 transitions. [2023-11-29 07:04:30,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 07:04:30,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:04:30,920 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] [2023-11-29 07:04:30,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 07:04:31,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:04:31,121 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:04:31,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:04:31,121 INFO L85 PathProgramCache]: Analyzing trace with hash -662755706, now seen corresponding path program 1 times [2023-11-29 07:04:31,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:04:31,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983274201] [2023-11-29 07:04:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:31,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:04:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:33,120 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:33,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:04:33,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983274201] [2023-11-29 07:04:33,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983274201] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:04:33,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576659503] [2023-11-29 07:04:33,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:33,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:04:33,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:04:33,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:04:33,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 07:04:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:33,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 07:04:33,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:04:33,738 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:33,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:04:34,548 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:34,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576659503] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:04:34,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:04:34,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-11-29 07:04:34,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711296432] [2023-11-29 07:04:34,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:04:34,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 07:04:34,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:04:34,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 07:04:34,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2023-11-29 07:04:34,551 INFO L87 Difference]: Start difference. First operand 14805 states and 19984 transitions. Second operand has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:39,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:04:39,663 INFO L93 Difference]: Finished difference Result 55451 states and 73073 transitions. [2023-11-29 07:04:39,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 07:04:39,663 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-11-29 07:04:39,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:04:39,696 INFO L225 Difference]: With dead ends: 55451 [2023-11-29 07:04:39,696 INFO L226 Difference]: Without dead ends: 43025 [2023-11-29 07:04:39,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=739, Invalid=3043, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 07:04:39,709 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 21040 mSDsluCounter, 5442 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21040 SdHoareTripleChecker+Valid, 6971 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:04:39,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21040 Valid, 6971 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 07:04:39,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43025 states. [2023-11-29 07:04:41,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43025 to 40594. [2023-11-29 07:04:41,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40594 states, 40592 states have (on average 1.3122290106424912) internal successors, (53266), 40593 states have internal predecessors, (53266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:41,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40594 states to 40594 states and 53266 transitions. [2023-11-29 07:04:41,510 INFO L78 Accepts]: Start accepts. Automaton has 40594 states and 53266 transitions. Word has length 114 [2023-11-29 07:04:41,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:04:41,510 INFO L495 AbstractCegarLoop]: Abstraction has 40594 states and 53266 transitions. [2023-11-29 07:04:41,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:41,510 INFO L276 IsEmpty]: Start isEmpty. Operand 40594 states and 53266 transitions. [2023-11-29 07:04:41,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 07:04:41,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:04:41,512 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] [2023-11-29 07:04:41,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 07:04:41,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 07:04:41,713 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:04:41,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:04:41,713 INFO L85 PathProgramCache]: Analyzing trace with hash -514153438, now seen corresponding path program 1 times [2023-11-29 07:04:41,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:04:41,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424266360] [2023-11-29 07:04:41,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:41,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:04:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:42,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:04:42,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424266360] [2023-11-29 07:04:42,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424266360] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:04:42,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103012891] [2023-11-29 07:04:42,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:42,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:04:42,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:04:42,567 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:04:42,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 07:04:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:42,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 07:04:42,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:04:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:43,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:04:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:43,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103012891] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:04:43,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:04:43,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-11-29 07:04:43,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071343043] [2023-11-29 07:04:43,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:04:43,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 07:04:43,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:04:43,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 07:04:43,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2023-11-29 07:04:43,989 INFO L87 Difference]: Start difference. First operand 40594 states and 53266 transitions. Second operand has 28 states, 28 states have (on average 10.857142857142858) internal successors, (304), 27 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:49,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:04:49,562 INFO L93 Difference]: Finished difference Result 124514 states and 162328 transitions. [2023-11-29 07:04:49,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-29 07:04:49,563 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.857142857142858) internal successors, (304), 27 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 07:04:49,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:04:49,639 INFO L225 Difference]: With dead ends: 124514 [2023-11-29 07:04:49,639 INFO L226 Difference]: Without dead ends: 90085 [2023-11-29 07:04:49,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=684, Invalid=2976, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 07:04:49,662 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 24526 mSDsluCounter, 10102 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24526 SdHoareTripleChecker+Valid, 11675 SdHoareTripleChecker+Invalid, 1880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:04:49,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24526 Valid, 11675 Invalid, 1880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1838 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 07:04:49,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90085 states. [2023-11-29 07:04:53,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90085 to 76427. [2023-11-29 07:04:53,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76427 states, 76425 states have (on average 1.3016813869807) internal successors, (99481), 76426 states have internal predecessors, (99481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:53,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76427 states to 76427 states and 99481 transitions. [2023-11-29 07:04:53,258 INFO L78 Accepts]: Start accepts. Automaton has 76427 states and 99481 transitions. Word has length 115 [2023-11-29 07:04:53,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:04:53,258 INFO L495 AbstractCegarLoop]: Abstraction has 76427 states and 99481 transitions. [2023-11-29 07:04:53,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.857142857142858) internal successors, (304), 27 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:04:53,258 INFO L276 IsEmpty]: Start isEmpty. Operand 76427 states and 99481 transitions. [2023-11-29 07:04:53,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 07:04:53,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:04:53,260 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] [2023-11-29 07:04:53,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 07:04:53,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 07:04:53,461 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:04:53,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:04:53,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1049736670, now seen corresponding path program 1 times [2023-11-29 07:04:53,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:04:53,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147050760] [2023-11-29 07:04:53,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:53,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:04:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:53,763 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:53,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:04:53,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147050760] [2023-11-29 07:04:53,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147050760] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:04:53,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127735231] [2023-11-29 07:04:53,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:04:53,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:04:53,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:04:53,765 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:04:53,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 07:04:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:04:53,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 07:04:53,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:04:54,608 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:54,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:04:56,038 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:04:56,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127735231] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:04:56,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:04:56,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-11-29 07:04:56,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526556300] [2023-11-29 07:04:56,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:04:56,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 07:04:56,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:04:56,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 07:04:56,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-11-29 07:04:56,041 INFO L87 Difference]: Start difference. First operand 76427 states and 99481 transitions. Second operand has 31 states, 31 states have (on average 10.225806451612904) internal successors, (317), 31 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:05,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:05,278 INFO L93 Difference]: Finished difference Result 218821 states and 282147 transitions. [2023-11-29 07:05:05,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-29 07:05:05,278 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.225806451612904) internal successors, (317), 31 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 07:05:05,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:05,404 INFO L225 Difference]: With dead ends: 218821 [2023-11-29 07:05:05,404 INFO L226 Difference]: Without dead ends: 144977 [2023-11-29 07:05:05,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1433 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1213, Invalid=4793, Unknown=0, NotChecked=0, Total=6006 [2023-11-29 07:05:05,423 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 19007 mSDsluCounter, 9955 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19007 SdHoareTripleChecker+Valid, 11508 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:05,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19007 Valid, 11508 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 07:05:05,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144977 states. [2023-11-29 07:05:11,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144977 to 117575. [2023-11-29 07:05:11,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117575 states, 117573 states have (on average 1.2730473833278049) internal successors, (149676), 117574 states have internal predecessors, (149676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117575 states to 117575 states and 149676 transitions. [2023-11-29 07:05:11,919 INFO L78 Accepts]: Start accepts. Automaton has 117575 states and 149676 transitions. Word has length 115 [2023-11-29 07:05:11,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:05:11,919 INFO L495 AbstractCegarLoop]: Abstraction has 117575 states and 149676 transitions. [2023-11-29 07:05:11,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.225806451612904) internal successors, (317), 31 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:11,919 INFO L276 IsEmpty]: Start isEmpty. Operand 117575 states and 149676 transitions. [2023-11-29 07:05:11,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 07:05:11,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:05:11,923 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] [2023-11-29 07:05:11,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 07:05:12,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:05:12,123 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:05:12,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:12,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1731694286, now seen corresponding path program 1 times [2023-11-29 07:05:12,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:12,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543389873] [2023-11-29 07:05:12,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:12,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:12,589 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:12,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:12,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543389873] [2023-11-29 07:05:12,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543389873] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:05:12,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638762079] [2023-11-29 07:05:12,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:12,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:05:12,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:12,591 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:05:12,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 07:05:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:12,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 07:05:12,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:13,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:05:14,975 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:14,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638762079] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:05:14,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:05:14,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-11-29 07:05:14,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100508632] [2023-11-29 07:05:14,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:05:14,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 07:05:14,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:14,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 07:05:14,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2023-11-29 07:05:14,977 INFO L87 Difference]: Start difference. First operand 117575 states and 149676 transitions. Second operand has 31 states, 31 states have (on average 10.612903225806452) internal successors, (329), 31 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:40,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:40,302 INFO L93 Difference]: Finished difference Result 595187 states and 751802 transitions. [2023-11-29 07:05:40,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 07:05:40,302 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.612903225806452) internal successors, (329), 31 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2023-11-29 07:05:40,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:05:40,980 INFO L225 Difference]: With dead ends: 595187 [2023-11-29 07:05:40,980 INFO L226 Difference]: Without dead ends: 489451 [2023-11-29 07:05:41,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1319 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1062, Invalid=4488, Unknown=0, NotChecked=0, Total=5550 [2023-11-29 07:05:41,048 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 20514 mSDsluCounter, 10199 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20514 SdHoareTripleChecker+Valid, 11752 SdHoareTripleChecker+Invalid, 1836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:05:41,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20514 Valid, 11752 Invalid, 1836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 07:05:41,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489451 states. [2023-11-29 07:06:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489451 to 461875. [2023-11-29 07:06:07,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461875 states, 461873 states have (on average 1.2452189238167202) internal successors, (575133), 461874 states have internal predecessors, (575133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:08,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461875 states to 461875 states and 575133 transitions. [2023-11-29 07:06:08,336 INFO L78 Accepts]: Start accepts. Automaton has 461875 states and 575133 transitions. Word has length 117 [2023-11-29 07:06:08,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:08,336 INFO L495 AbstractCegarLoop]: Abstraction has 461875 states and 575133 transitions. [2023-11-29 07:06:08,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.612903225806452) internal successors, (329), 31 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:08,337 INFO L276 IsEmpty]: Start isEmpty. Operand 461875 states and 575133 transitions. [2023-11-29 07:06:08,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 07:06:08,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:08,345 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] [2023-11-29 07:06:08,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 07:06:08,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 07:06:08,546 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:08,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:08,546 INFO L85 PathProgramCache]: Analyzing trace with hash -434590142, now seen corresponding path program 1 times [2023-11-29 07:06:08,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:08,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647369319] [2023-11-29 07:06:08,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:08,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:06:15,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:15,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647369319] [2023-11-29 07:06:15,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647369319] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:06:15,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909158291] [2023-11-29 07:06:15,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:15,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:15,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:15,137 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:15,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 07:06:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:15,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 07:06:15,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:06:16,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:06:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:06:18,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909158291] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:06:18,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:06:18,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 12, 12] total 62 [2023-11-29 07:06:18,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210148531] [2023-11-29 07:06:18,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:06:18,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-11-29 07:06:18,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:18,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-11-29 07:06:18,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=3550, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 07:06:18,308 INFO L87 Difference]: Start difference. First operand 461875 states and 575133 transitions. Second operand has 62 states, 62 states have (on average 5.451612903225806) internal successors, (338), 62 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:16,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:16,604 INFO L93 Difference]: Finished difference Result 684911 states and 844106 transitions. [2023-11-29 07:10:16,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 624 states. [2023-11-29 07:10:16,605 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.451612903225806) internal successors, (338), 62 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have 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 07:10:16,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:17,452 INFO L225 Difference]: With dead ends: 684911 [2023-11-29 07:10:17,452 INFO L226 Difference]: Without dead ends: 578404 [2023-11-29 07:10:17,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 682 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212880 ImplicationChecksByTransitivity, 178.7s TimeCoverageRelationStatistics Valid=63045, Invalid=404127, Unknown=0, NotChecked=0, Total=467172 [2023-11-29 07:10:17,563 INFO L413 NwaCegarLoop]: 1904 mSDtfsCounter, 38217 mSDsluCounter, 48017 mSDsCounter, 0 mSdLazyCounter, 23592 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38217 SdHoareTripleChecker+Valid, 49921 SdHoareTripleChecker+Invalid, 23832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 23592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:17,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38217 Valid, 49921 Invalid, 23832 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [240 Valid, 23592 Invalid, 0 Unknown, 0 Unchecked, 23.1s Time] [2023-11-29 07:10:17,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578404 states. [2023-11-29 07:10:46,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578404 to 436056. [2023-11-29 07:10:47,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436056 states, 436054 states have (on average 1.2429767872786397) internal successors, (542005), 436055 states have internal predecessors, (542005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:48,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436056 states to 436056 states and 542005 transitions. [2023-11-29 07:10:48,453 INFO L78 Accepts]: Start accepts. Automaton has 436056 states and 542005 transitions. Word has length 119 [2023-11-29 07:10:48,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:48,453 INFO L495 AbstractCegarLoop]: Abstraction has 436056 states and 542005 transitions. [2023-11-29 07:10:48,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.451612903225806) internal successors, (338), 62 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:48,453 INFO L276 IsEmpty]: Start isEmpty. Operand 436056 states and 542005 transitions. [2023-11-29 07:10:48,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 07:10:48,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:48,466 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] [2023-11-29 07:10:48,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 07:10:48,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 07:10:48,667 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:48,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:48,667 INFO L85 PathProgramCache]: Analyzing trace with hash -508077246, now seen corresponding path program 1 times [2023-11-29 07:10:48,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:48,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312106998] [2023-11-29 07:10:48,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:48,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:10:49,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:49,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312106998] [2023-11-29 07:10:49,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312106998] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:10:49,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606783134] [2023-11-29 07:10:49,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:49,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:49,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:49,743 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:49,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 07:10:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:49,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 07:10:49,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:51,357 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:10:51,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:10:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:10:52,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606783134] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:10:52,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:10:52,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2023-11-29 07:10:52,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969358178] [2023-11-29 07:10:52,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:10:52,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 07:10:52,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:52,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 07:10:52,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2023-11-29 07:10:52,943 INFO L87 Difference]: Start difference. First operand 436056 states and 542005 transitions. Second operand has 32 states, 32 states have (on average 9.5625) internal successors, (306), 32 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:12:00,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:12:00,963 INFO L93 Difference]: Finished difference Result 1171434 states and 1454056 transitions. [2023-11-29 07:12:00,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 07:12:00,963 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.5625) internal successors, (306), 32 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have 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 07:12:00,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:12:02,772 INFO L225 Difference]: With dead ends: 1171434 [2023-11-29 07:12:02,772 INFO L226 Difference]: Without dead ends: 1063348 [2023-11-29 07:12:02,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=812, Invalid=3220, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 07:12:02,952 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 13160 mSDsluCounter, 14298 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13160 SdHoareTripleChecker+Valid, 15847 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:12:02,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13160 Valid, 15847 Invalid, 1331 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 07:12:04,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063348 states. [2023-11-29 07:12:35,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063348 to 413776. [2023-11-29 07:12:35,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413776 states, 413774 states have (on average 1.2397782364285819) internal successors, (512988), 413775 states have internal predecessors, (512988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:12:36,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413776 states to 413776 states and 512988 transitions. [2023-11-29 07:12:36,412 INFO L78 Accepts]: Start accepts. Automaton has 413776 states and 512988 transitions. Word has length 119 [2023-11-29 07:12:36,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:12:36,412 INFO L495 AbstractCegarLoop]: Abstraction has 413776 states and 512988 transitions. [2023-11-29 07:12:36,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.5625) internal successors, (306), 32 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:12:36,413 INFO L276 IsEmpty]: Start isEmpty. Operand 413776 states and 512988 transitions. [2023-11-29 07:12:36,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 07:12:36,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:12:36,421 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] [2023-11-29 07:12:36,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 07:12:36,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 07:12:36,622 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:12:36,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:12:36,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1897008154, now seen corresponding path program 1 times [2023-11-29 07:12:36,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:12:36,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364291303] [2023-11-29 07:12:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:12:36,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:12:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:42,517 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:12:42,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:12:42,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364291303] [2023-11-29 07:12:42,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364291303] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:12:42,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431544493] [2023-11-29 07:12:42,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:12:42,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:12:42,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:12:42,518 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:12:42,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64255194-bf71-459b-8d0d-7ad8a265618e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 07:12:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:42,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 07:12:42,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:12:44,778 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:12:44,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:12:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:12:46,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431544493] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:12:46,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:12:46,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 11, 11] total 59 [2023-11-29 07:12:46,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788243193] [2023-11-29 07:12:46,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:12:46,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-11-29 07:12:46,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:12:46,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-11-29 07:12:46,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=3228, Unknown=0, NotChecked=0, Total=3422 [2023-11-29 07:12:46,610 INFO L87 Difference]: Start difference. First operand 413776 states and 512988 transitions. Second operand has 59 states, 59 states have (on average 5.661016949152542) internal successors, (334), 59 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)