./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/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_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/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_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/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 d6cbf9f81ba67bad6e6530216804abdcdebcc68311bbd0903d94efa0ae091f20 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:53:54,637 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:53:54,701 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:53:54,706 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:53:54,707 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:53:54,728 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:53:54,728 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:53:54,729 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:53:54,730 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:53:54,730 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:53:54,731 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:53:54,731 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:53:54,732 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:53:54,733 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:53:54,733 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:53:54,734 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:53:54,734 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:53:54,735 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:53:54,735 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:53:54,736 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:53:54,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:53:54,737 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:53:54,737 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:53:54,738 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:53:54,738 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:53:54,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:53:54,739 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:53:54,740 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:53:54,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:53:54,740 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:53:54,741 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:53:54,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:53:54,741 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:53:54,742 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:53:54,742 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:53:54,742 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:53:54,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:53:54,742 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:53:54,743 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:53:54,743 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:53:54,743 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:53:54,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:53:54,743 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_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6cbf9f81ba67bad6e6530216804abdcdebcc68311bbd0903d94efa0ae091f20 [2023-11-29 01:53:54,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:53:54,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:53:54,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:53:54,987 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:53:54,988 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:53:54,989 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label04.c [2023-11-29 01:53:57,696 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:53:58,072 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:53:58,073 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label04.c [2023-11-29 01:53:58,100 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/data/6d0b78508/1b5d6034a9ba45d299e07a1b5f5f58f0/FLAGdb5524aa7 [2023-11-29 01:53:58,112 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/data/6d0b78508/1b5d6034a9ba45d299e07a1b5f5f58f0 [2023-11-29 01:53:58,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:53:58,115 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:53:58,116 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:53:58,116 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:53:58,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:53:58,121 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:53:58" (1/1) ... [2023-11-29 01:53:58,122 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e68556c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:58, skipping insertion in model container [2023-11-29 01:53:58,122 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:53:58" (1/1) ... [2023-11-29 01:53:58,275 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:53:58,549 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_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label04.c[11677,11690] [2023-11-29 01:53:58,608 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_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label04.c[18738,18751] [2023-11-29 01:53:59,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:53:59,269 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:53:59,298 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_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label04.c[11677,11690] [2023-11-29 01:53:59,311 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_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label04.c[18738,18751] [2023-11-29 01:53:59,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:53:59,866 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:53:59,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:59 WrapperNode [2023-11-29 01:53:59,867 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:53:59,868 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:53:59,868 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:53:59,868 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:53:59,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:59" (1/1) ... [2023-11-29 01:53:59,925 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:59" (1/1) ... [2023-11-29 01:54:00,182 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5094 [2023-11-29 01:54:00,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:54:00,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:54:00,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:54:00,196 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:54:00,207 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:59" (1/1) ... [2023-11-29 01:54:00,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:59" (1/1) ... [2023-11-29 01:54:00,253 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:59" (1/1) ... [2023-11-29 01:54:00,409 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 01:54:00,410 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:59" (1/1) ... [2023-11-29 01:54:00,410 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:59" (1/1) ... [2023-11-29 01:54:00,506 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:59" (1/1) ... [2023-11-29 01:54:00,532 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:59" (1/1) ... [2023-11-29 01:54:00,554 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:59" (1/1) ... [2023-11-29 01:54:00,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:59" (1/1) ... [2023-11-29 01:54:00,618 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:54:00,618 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:54:00,619 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:54:00,619 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:54:00,619 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:59" (1/1) ... [2023-11-29 01:54:00,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:54:00,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:00,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:54:00,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:54:00,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:54:00,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:54:00,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:54:00,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:54:00,783 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:54:00,786 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:54:05,322 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:54:05,394 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:54:05,394 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 01:54:05,395 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:54:05 BoogieIcfgContainer [2023-11-29 01:54:05,395 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:54:05,398 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:54:05,399 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:54:05,402 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:54:05,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:53:58" (1/3) ... [2023-11-29 01:54:05,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66932f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:54:05, skipping insertion in model container [2023-11-29 01:54:05,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:59" (2/3) ... [2023-11-29 01:54:05,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66932f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:54:05, skipping insertion in model container [2023-11-29 01:54:05,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:54:05" (3/3) ... [2023-11-29 01:54:05,405 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label04.c [2023-11-29 01:54:05,424 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:54:05,425 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 01:54:05,498 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:54:05,505 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;@5780bf10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:54:05,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 01:54:05,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:05,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 01:54:05,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:05,523 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] [2023-11-29 01:54:05,524 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:05,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:05,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1603356568, now seen corresponding path program 1 times [2023-11-29 01:54:05,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:05,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627733633] [2023-11-29 01:54:05,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:05,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:05,734 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 01:54:05,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:05,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627733633] [2023-11-29 01:54:05,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627733633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:05,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:05,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:54:05,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859113475] [2023-11-29 01:54:05,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:05,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:54:05,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:05,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:54:05,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:54:05,770 INFO L87 Difference]: Start difference. First operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:05,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:05,859 INFO L93 Difference]: Finished difference Result 1633 states and 3216 transitions. [2023-11-29 01:54:05,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:54:05,861 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-11-29 01:54:05,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:05,879 INFO L225 Difference]: With dead ends: 1633 [2023-11-29 01:54:05,879 INFO L226 Difference]: Without dead ends: 830 [2023-11-29 01:54:05,885 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 01:54:05,888 INFO L413 NwaCegarLoop]: 1571 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, 1571 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 01:54:05,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1571 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:54:05,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-11-29 01:54:05,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-11-29 01:54:05,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8973429951690821) internal successors, (1571), 829 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:05,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1571 transitions. [2023-11-29 01:54:05,974 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1571 transitions. Word has length 21 [2023-11-29 01:54:05,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:05,975 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1571 transitions. [2023-11-29 01:54:05,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:05,976 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1571 transitions. [2023-11-29 01:54:05,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 01:54:05,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:05,977 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] [2023-11-29 01:54:05,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:54:05,978 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:05,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:05,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1103262826, now seen corresponding path program 1 times [2023-11-29 01:54:05,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:05,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646322502] [2023-11-29 01:54:05,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:05,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:06,222 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 01:54:06,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:06,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646322502] [2023-11-29 01:54:06,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646322502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:06,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:06,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:54:06,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019881039] [2023-11-29 01:54:06,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:06,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:54:06,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:06,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:54:06,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:54:06,227 INFO L87 Difference]: Start difference. First operand 830 states and 1571 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:06,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:06,320 INFO L93 Difference]: Finished difference Result 874 states and 1640 transitions. [2023-11-29 01:54:06,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:54:06,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-11-29 01:54:06,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:06,327 INFO L225 Difference]: With dead ends: 874 [2023-11-29 01:54:06,327 INFO L226 Difference]: Without dead ends: 830 [2023-11-29 01:54:06,329 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 01:54:06,330 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 0 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:06,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4669 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:54:06,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-11-29 01:54:06,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-11-29 01:54:06,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8599033816425121) internal successors, (1540), 829 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1540 transitions. [2023-11-29 01:54:06,359 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1540 transitions. Word has length 21 [2023-11-29 01:54:06,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:06,359 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1540 transitions. [2023-11-29 01:54:06,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:06,360 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1540 transitions. [2023-11-29 01:54:06,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-29 01:54:06,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:06,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:06,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:54:06,363 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:06,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:06,363 INFO L85 PathProgramCache]: Analyzing trace with hash 51546625, now seen corresponding path program 1 times [2023-11-29 01:54:06,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:06,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697512673] [2023-11-29 01:54:06,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:06,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:06,543 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 01:54:06,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:06,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697512673] [2023-11-29 01:54:06,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697512673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:06,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:06,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:54:06,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034699492] [2023-11-29 01:54:06,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:06,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:54:06,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:06,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:54:06,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:54:06,546 INFO L87 Difference]: Start difference. First operand 830 states and 1540 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:06,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:06,859 INFO L93 Difference]: Finished difference Result 1240 states and 2200 transitions. [2023-11-29 01:54:06,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:54:06,860 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-29 01:54:06,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:06,866 INFO L225 Difference]: With dead ends: 1240 [2023-11-29 01:54:06,866 INFO L226 Difference]: Without dead ends: 1199 [2023-11-29 01:54:06,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:54:06,868 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 7933 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7933 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:06,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7933 Valid, 2700 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:54:06,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2023-11-29 01:54:06,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 869. [2023-11-29 01:54:06,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 867 states have (on average 1.8489042675893888) internal successors, (1603), 868 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:06,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1603 transitions. [2023-11-29 01:54:06,891 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1603 transitions. Word has length 51 [2023-11-29 01:54:06,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:06,891 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1603 transitions. [2023-11-29 01:54:06,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:06,892 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1603 transitions. [2023-11-29 01:54:06,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 01:54:06,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:06,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:06,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:54:06,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:06,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:06,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2145916561, now seen corresponding path program 1 times [2023-11-29 01:54:06,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:06,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86604600] [2023-11-29 01:54:06,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:06,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:06,958 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 01:54:06,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:06,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86604600] [2023-11-29 01:54:06,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86604600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:06,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:06,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:54:06,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594347559] [2023-11-29 01:54:06,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:06,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:06,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:06,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:06,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:06,961 INFO L87 Difference]: Start difference. First operand 869 states and 1603 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:06,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:06,998 INFO L93 Difference]: Finished difference Result 1018 states and 1842 transitions. [2023-11-29 01:54:06,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:06,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-29 01:54:06,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:07,003 INFO L225 Difference]: With dead ends: 1018 [2023-11-29 01:54:07,004 INFO L226 Difference]: Without dead ends: 938 [2023-11-29 01:54:07,004 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 01:54:07,005 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1480 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1595 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 01:54:07,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1595 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:54:07,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-11-29 01:54:07,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2023-11-29 01:54:07,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 934 states have (on average 1.8297644539614561) internal successors, (1709), 935 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1709 transitions. [2023-11-29 01:54:07,026 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1709 transitions. Word has length 53 [2023-11-29 01:54:07,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:07,026 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1709 transitions. [2023-11-29 01:54:07,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:07,027 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1709 transitions. [2023-11-29 01:54:07,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 01:54:07,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:07,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:07,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:54:07,030 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:07,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:07,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2146905783, now seen corresponding path program 1 times [2023-11-29 01:54:07,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:07,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877581995] [2023-11-29 01:54:07,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:07,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:07,261 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 01:54:07,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:07,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877581995] [2023-11-29 01:54:07,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877581995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:07,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:07,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:54:07,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783715784] [2023-11-29 01:54:07,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:07,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:54:07,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:07,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:54:07,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:54:07,264 INFO L87 Difference]: Start difference. First operand 936 states and 1709 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:07,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:07,492 INFO L93 Difference]: Finished difference Result 1085 states and 1945 transitions. [2023-11-29 01:54:07,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:54:07,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-29 01:54:07,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:07,499 INFO L225 Difference]: With dead ends: 1085 [2023-11-29 01:54:07,499 INFO L226 Difference]: Without dead ends: 938 [2023-11-29 01:54:07,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:54:07,501 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 7439 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7439 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:07,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7439 Valid, 1775 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:54:07,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-11-29 01:54:07,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2023-11-29 01:54:07,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 934 states have (on average 1.8276231263383298) internal successors, (1707), 935 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:07,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1707 transitions. [2023-11-29 01:54:07,530 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1707 transitions. Word has length 53 [2023-11-29 01:54:07,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:07,531 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1707 transitions. [2023-11-29 01:54:07,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:07,531 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1707 transitions. [2023-11-29 01:54:07,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 01:54:07,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:07,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:07,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:54:07,533 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:07,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:07,533 INFO L85 PathProgramCache]: Analyzing trace with hash 2036322024, now seen corresponding path program 1 times [2023-11-29 01:54:07,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:07,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183594433] [2023-11-29 01:54:07,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:07,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:07,717 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 01:54:07,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:07,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183594433] [2023-11-29 01:54:07,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183594433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:07,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:07,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:54:07,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495655299] [2023-11-29 01:54:07,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:07,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:54:07,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:07,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:54:07,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:54:07,719 INFO L87 Difference]: Start difference. First operand 936 states and 1707 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:07,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:07,805 INFO L93 Difference]: Finished difference Result 944 states and 1716 transitions. [2023-11-29 01:54:07,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:54:07,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-29 01:54:07,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:07,812 INFO L225 Difference]: With dead ends: 944 [2023-11-29 01:54:07,812 INFO L226 Difference]: Without dead ends: 942 [2023-11-29 01:54:07,813 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 01:54:07,814 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4600 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 01:54:07,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4600 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:54:07,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2023-11-29 01:54:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 940. [2023-11-29 01:54:07,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 938 states have (on average 1.8230277185501067) internal successors, (1710), 939 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:07,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1710 transitions. [2023-11-29 01:54:07,843 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1710 transitions. Word has length 54 [2023-11-29 01:54:07,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:07,843 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1710 transitions. [2023-11-29 01:54:07,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:07,843 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1710 transitions. [2023-11-29 01:54:07,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 01:54:07,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:07,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:07,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:54:07,845 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:07,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:07,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1922958665, now seen corresponding path program 1 times [2023-11-29 01:54:07,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:07,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854843002] [2023-11-29 01:54:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:07,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:07,908 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 01:54:07,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:07,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854843002] [2023-11-29 01:54:07,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854843002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:07,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:07,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:54:07,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201860690] [2023-11-29 01:54:07,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:07,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:07,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:07,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:07,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:07,911 INFO L87 Difference]: Start difference. First operand 940 states and 1710 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:07,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:07,947 INFO L93 Difference]: Finished difference Result 1102 states and 1963 transitions. [2023-11-29 01:54:07,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:07,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-29 01:54:07,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:07,954 INFO L225 Difference]: With dead ends: 1102 [2023-11-29 01:54:07,954 INFO L226 Difference]: Without dead ends: 1018 [2023-11-29 01:54:07,955 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 01:54:07,956 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1494 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1653 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 01:54:07,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:54:07,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2023-11-29 01:54:07,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1016. [2023-11-29 01:54:07,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1014 states have (on average 1.801775147928994) internal successors, (1827), 1015 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:07,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1827 transitions. [2023-11-29 01:54:07,987 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1827 transitions. Word has length 55 [2023-11-29 01:54:07,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:07,987 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1827 transitions. [2023-11-29 01:54:07,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:07,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1827 transitions. [2023-11-29 01:54:07,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 01:54:07,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:07,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:07,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:54:07,989 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:07,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:07,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1694319433, now seen corresponding path program 1 times [2023-11-29 01:54:07,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:07,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511239126] [2023-11-29 01:54:07,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:07,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:08,044 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 01:54:08,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:08,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511239126] [2023-11-29 01:54:08,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511239126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:08,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:08,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:54:08,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296281647] [2023-11-29 01:54:08,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:08,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:08,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:08,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:08,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:08,046 INFO L87 Difference]: Start difference. First operand 1016 states and 1827 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:08,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:08,087 INFO L93 Difference]: Finished difference Result 1442 states and 2487 transitions. [2023-11-29 01:54:08,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:08,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-29 01:54:08,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:08,095 INFO L225 Difference]: With dead ends: 1442 [2023-11-29 01:54:08,095 INFO L226 Difference]: Without dead ends: 1217 [2023-11-29 01:54:08,096 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 01:54:08,097 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1490 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1653 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 01:54:08,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:54:08,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-11-29 01:54:08,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1215. [2023-11-29 01:54:08,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1213 states have (on average 1.7551525144270403) internal successors, (2129), 1214 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:08,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2129 transitions. [2023-11-29 01:54:08,135 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2129 transitions. Word has length 55 [2023-11-29 01:54:08,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:08,135 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 2129 transitions. [2023-11-29 01:54:08,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:08,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2129 transitions. [2023-11-29 01:54:08,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 01:54:08,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:08,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:08,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:54:08,137 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:08,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:08,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1068663369, now seen corresponding path program 1 times [2023-11-29 01:54:08,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:08,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90052210] [2023-11-29 01:54:08,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:08,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:08,191 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 01:54:08,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:08,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90052210] [2023-11-29 01:54:08,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90052210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:08,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:08,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:54:08,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458297251] [2023-11-29 01:54:08,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:08,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:08,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:08,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:08,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:08,193 INFO L87 Difference]: Start difference. First operand 1215 states and 2129 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:08,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:08,240 INFO L93 Difference]: Finished difference Result 2015 states and 3351 transitions. [2023-11-29 01:54:08,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:08,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-29 01:54:08,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:08,250 INFO L225 Difference]: With dead ends: 2015 [2023-11-29 01:54:08,250 INFO L226 Difference]: Without dead ends: 1591 [2023-11-29 01:54:08,251 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 01:54:08,252 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1488 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1655 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 01:54:08,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1655 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:54:08,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2023-11-29 01:54:08,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1589. [2023-11-29 01:54:08,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1587 states have (on average 1.6918714555765595) internal successors, (2685), 1588 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:08,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2685 transitions. [2023-11-29 01:54:08,301 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2685 transitions. Word has length 55 [2023-11-29 01:54:08,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:08,301 INFO L495 AbstractCegarLoop]: Abstraction has 1589 states and 2685 transitions. [2023-11-29 01:54:08,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:08,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2685 transitions. [2023-11-29 01:54:08,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 01:54:08,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:08,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:08,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:54:08,303 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:08,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:08,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1957396809, now seen corresponding path program 1 times [2023-11-29 01:54:08,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:08,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977981187] [2023-11-29 01:54:08,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:08,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:08,353 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 01:54:08,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:08,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977981187] [2023-11-29 01:54:08,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977981187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:08,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:08,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:54:08,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272353768] [2023-11-29 01:54:08,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:08,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:08,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:08,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:08,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:08,355 INFO L87 Difference]: Start difference. First operand 1589 states and 2685 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:08,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:08,417 INFO L93 Difference]: Finished difference Result 3089 states and 4935 transitions. [2023-11-29 01:54:08,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:08,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-29 01:54:08,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:08,429 INFO L225 Difference]: With dead ends: 3089 [2023-11-29 01:54:08,429 INFO L226 Difference]: Without dead ends: 2291 [2023-11-29 01:54:08,431 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 01:54:08,431 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1486 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1657 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 01:54:08,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1657 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:54:08,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2023-11-29 01:54:08,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2289. [2023-11-29 01:54:08,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2287 states have (on average 1.6182772190642762) internal successors, (3701), 2288 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:08,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 3701 transitions. [2023-11-29 01:54:08,503 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 3701 transitions. Word has length 55 [2023-11-29 01:54:08,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:08,504 INFO L495 AbstractCegarLoop]: Abstraction has 2289 states and 3701 transitions. [2023-11-29 01:54:08,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:08,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 3701 transitions. [2023-11-29 01:54:08,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 01:54:08,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:08,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:08,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:54:08,505 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:08,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:08,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1654375497, now seen corresponding path program 1 times [2023-11-29 01:54:08,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:08,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698516746] [2023-11-29 01:54:08,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:08,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:08,555 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 01:54:08,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:08,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698516746] [2023-11-29 01:54:08,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698516746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:08,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:08,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:54:08,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687083982] [2023-11-29 01:54:08,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:08,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:08,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:08,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:08,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:08,557 INFO L87 Difference]: Start difference. First operand 2289 states and 3701 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:08,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:08,687 INFO L93 Difference]: Finished difference Result 5093 states and 7815 transitions. [2023-11-29 01:54:08,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:08,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-29 01:54:08,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:08,704 INFO L225 Difference]: With dead ends: 5093 [2023-11-29 01:54:08,704 INFO L226 Difference]: Without dead ends: 3595 [2023-11-29 01:54:08,706 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 01:54:08,707 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 1492 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1659 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 01:54:08,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:54:08,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2023-11-29 01:54:08,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 3593. [2023-11-29 01:54:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 3591 states have (on average 1.5430242272347536) internal successors, (5541), 3592 states have internal predecessors, (5541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:08,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 5541 transitions. [2023-11-29 01:54:08,791 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 5541 transitions. Word has length 55 [2023-11-29 01:54:08,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:08,792 INFO L495 AbstractCegarLoop]: Abstraction has 3593 states and 5541 transitions. [2023-11-29 01:54:08,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:08,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 5541 transitions. [2023-11-29 01:54:08,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-29 01:54:08,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:08,792 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] [2023-11-29 01:54:08,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:54:08,793 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:08,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:08,793 INFO L85 PathProgramCache]: Analyzing trace with hash -2135574669, now seen corresponding path program 1 times [2023-11-29 01:54:08,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:08,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256203013] [2023-11-29 01:54:08,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:08,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:08,851 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 01:54:08,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:08,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256203013] [2023-11-29 01:54:08,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256203013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:08,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:08,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:54:08,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73962029] [2023-11-29 01:54:08,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:08,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:08,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:08,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:08,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:08,853 INFO L87 Difference]: Start difference. First operand 3593 states and 5541 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:12,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:12,478 INFO L93 Difference]: Finished difference Result 5097 states and 8414 transitions. [2023-11-29 01:54:12,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:12,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2023-11-29 01:54:12,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:12,496 INFO L225 Difference]: With dead ends: 5097 [2023-11-29 01:54:12,497 INFO L226 Difference]: Without dead ends: 4344 [2023-11-29 01:54:12,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:54:12,499 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 856 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:12,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 175 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 01:54:12,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2023-11-29 01:54:12,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 4344. [2023-11-29 01:54:12,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 4342 states have (on average 1.592814371257485) internal successors, (6916), 4343 states have internal predecessors, (6916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 6916 transitions. [2023-11-29 01:54:12,660 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 6916 transitions. Word has length 60 [2023-11-29 01:54:12,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:12,661 INFO L495 AbstractCegarLoop]: Abstraction has 4344 states and 6916 transitions. [2023-11-29 01:54:12,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:12,661 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 6916 transitions. [2023-11-29 01:54:12,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 01:54:12,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:12,663 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] [2023-11-29 01:54:12,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:54:12,664 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:12,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:12,664 INFO L85 PathProgramCache]: Analyzing trace with hash 285878162, now seen corresponding path program 1 times [2023-11-29 01:54:12,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:12,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175615460] [2023-11-29 01:54:12,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:12,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:54:12,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:12,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175615460] [2023-11-29 01:54:12,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175615460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:12,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:12,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:54:12,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217831260] [2023-11-29 01:54:12,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:12,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:54:12,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:12,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:54:12,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:54:12,840 INFO L87 Difference]: Start difference. First operand 4344 states and 6916 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:13,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:13,363 INFO L93 Difference]: Finished difference Result 18132 states and 26906 transitions. [2023-11-29 01:54:13,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:54:13,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 73 [2023-11-29 01:54:13,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:13,418 INFO L225 Difference]: With dead ends: 18132 [2023-11-29 01:54:13,418 INFO L226 Difference]: Without dead ends: 16146 [2023-11-29 01:54:13,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:54:13,424 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6293 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6293 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:13,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6293 Valid, 3541 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:54:13,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16146 states. [2023-11-29 01:54:13,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16146 to 6744. [2023-11-29 01:54:13,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6744 states, 6742 states have (on average 1.5360427172945714) internal successors, (10356), 6743 states have internal predecessors, (10356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:13,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6744 states to 6744 states and 10356 transitions. [2023-11-29 01:54:13,670 INFO L78 Accepts]: Start accepts. Automaton has 6744 states and 10356 transitions. Word has length 73 [2023-11-29 01:54:13,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:13,670 INFO L495 AbstractCegarLoop]: Abstraction has 6744 states and 10356 transitions. [2023-11-29 01:54:13,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:13,670 INFO L276 IsEmpty]: Start isEmpty. Operand 6744 states and 10356 transitions. [2023-11-29 01:54:13,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 01:54:13,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:13,672 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] [2023-11-29 01:54:13,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:54:13,672 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:13,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:13,673 INFO L85 PathProgramCache]: Analyzing trace with hash 57238930, now seen corresponding path program 1 times [2023-11-29 01:54:13,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:13,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483172625] [2023-11-29 01:54:13,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:13,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:54:13,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:13,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483172625] [2023-11-29 01:54:13,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483172625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:13,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:13,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:54:13,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465845922] [2023-11-29 01:54:13,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:13,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:54:13,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:13,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:54:13,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:54:13,799 INFO L87 Difference]: Start difference. First operand 6744 states and 10356 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:14,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:14,297 INFO L93 Difference]: Finished difference Result 20932 states and 30938 transitions. [2023-11-29 01:54:14,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:54:14,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 73 [2023-11-29 01:54:14,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:14,332 INFO L225 Difference]: With dead ends: 20932 [2023-11-29 01:54:14,333 INFO L226 Difference]: Without dead ends: 18130 [2023-11-29 01:54:14,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:54:14,340 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6338 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:14,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6338 Valid, 3574 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:54:14,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18130 states. [2023-11-29 01:54:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18130 to 10536. [2023-11-29 01:54:14,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10536 states, 10534 states have (on average 1.49800645528764) internal successors, (15780), 10535 states have internal predecessors, (15780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:14,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10536 states to 10536 states and 15780 transitions. [2023-11-29 01:54:14,679 INFO L78 Accepts]: Start accepts. Automaton has 10536 states and 15780 transitions. Word has length 73 [2023-11-29 01:54:14,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:14,679 INFO L495 AbstractCegarLoop]: Abstraction has 10536 states and 15780 transitions. [2023-11-29 01:54:14,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand 10536 states and 15780 transitions. [2023-11-29 01:54:14,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 01:54:14,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:14,681 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] [2023-11-29 01:54:14,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:54:14,682 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:14,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:14,682 INFO L85 PathProgramCache]: Analyzing trace with hash -568417134, now seen corresponding path program 1 times [2023-11-29 01:54:14,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:14,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833145447] [2023-11-29 01:54:14,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:14,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 01:54:14,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:14,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833145447] [2023-11-29 01:54:14,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833145447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:14,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:14,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:54:14,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971589943] [2023-11-29 01:54:14,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:14,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:54:14,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:14,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:54:14,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:54:14,839 INFO L87 Difference]: Start difference. First operand 10536 states and 15780 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:15,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:15,359 INFO L93 Difference]: Finished difference Result 23732 states and 34954 transitions. [2023-11-29 01:54:15,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:54:15,359 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 73 [2023-11-29 01:54:15,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:15,391 INFO L225 Difference]: With dead ends: 23732 [2023-11-29 01:54:15,391 INFO L226 Difference]: Without dead ends: 20930 [2023-11-29 01:54:15,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:54:15,400 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6383 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6383 SdHoareTripleChecker+Valid, 3539 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:15,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6383 Valid, 3539 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:54:15,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20930 states. [2023-11-29 01:54:15,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20930 to 13336. [2023-11-29 01:54:15,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13336 states, 13334 states have (on average 1.4846257687115645) internal successors, (19796), 13335 states have internal predecessors, (19796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:15,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13336 states to 13336 states and 19796 transitions. [2023-11-29 01:54:15,919 INFO L78 Accepts]: Start accepts. Automaton has 13336 states and 19796 transitions. Word has length 73 [2023-11-29 01:54:15,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:15,919 INFO L495 AbstractCegarLoop]: Abstraction has 13336 states and 19796 transitions. [2023-11-29 01:54:15,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:15,919 INFO L276 IsEmpty]: Start isEmpty. Operand 13336 states and 19796 transitions. [2023-11-29 01:54:15,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 01:54:15,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:15,922 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] [2023-11-29 01:54:15,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:54:15,922 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:15,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:15,922 INFO L85 PathProgramCache]: Analyzing trace with hash 320316306, now seen corresponding path program 1 times [2023-11-29 01:54:15,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:15,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435944812] [2023-11-29 01:54:15,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:15,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:16,067 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 01:54:16,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:16,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435944812] [2023-11-29 01:54:16,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435944812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:16,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:16,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:54:16,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699006340] [2023-11-29 01:54:16,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:16,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:54:16,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:16,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:54:16,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:54:16,070 INFO L87 Difference]: Start difference. First operand 13336 states and 19796 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:16,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:16,608 INFO L93 Difference]: Finished difference Result 26532 states and 38970 transitions. [2023-11-29 01:54:16,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:54:16,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 73 [2023-11-29 01:54:16,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:16,635 INFO L225 Difference]: With dead ends: 26532 [2023-11-29 01:54:16,635 INFO L226 Difference]: Without dead ends: 23730 [2023-11-29 01:54:16,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:54:16,644 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6339 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6339 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:16,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6339 Valid, 3590 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:54:16,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23730 states. [2023-11-29 01:54:17,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23730 to 16136. [2023-11-29 01:54:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16136 states, 16134 states have (on average 1.4758894260567745) internal successors, (23812), 16135 states have internal predecessors, (23812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16136 states to 16136 states and 23812 transitions. [2023-11-29 01:54:17,138 INFO L78 Accepts]: Start accepts. Automaton has 16136 states and 23812 transitions. Word has length 73 [2023-11-29 01:54:17,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:17,139 INFO L495 AbstractCegarLoop]: Abstraction has 16136 states and 23812 transitions. [2023-11-29 01:54:17,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:17,139 INFO L276 IsEmpty]: Start isEmpty. Operand 16136 states and 23812 transitions. [2023-11-29 01:54:17,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 01:54:17,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:17,141 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] [2023-11-29 01:54:17,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 01:54:17,141 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:17,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:17,141 INFO L85 PathProgramCache]: Analyzing trace with hash 17294994, now seen corresponding path program 1 times [2023-11-29 01:54:17,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:17,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992190143] [2023-11-29 01:54:17,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:17,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:17,259 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:54:17,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:17,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992190143] [2023-11-29 01:54:17,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992190143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:17,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:17,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:54:17,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199222079] [2023-11-29 01:54:17,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:17,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:54:17,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:17,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:54:17,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:54:17,261 INFO L87 Difference]: Start difference. First operand 16136 states and 23812 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:17,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:17,973 INFO L93 Difference]: Finished difference Result 29332 states and 42986 transitions. [2023-11-29 01:54:17,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:54:17,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 73 [2023-11-29 01:54:17,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:17,997 INFO L225 Difference]: With dead ends: 29332 [2023-11-29 01:54:17,997 INFO L226 Difference]: Without dead ends: 26530 [2023-11-29 01:54:18,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:54:18,004 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 6295 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6295 SdHoareTripleChecker+Valid, 3651 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:18,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6295 Valid, 3651 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:54:18,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26530 states. [2023-11-29 01:54:18,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26530 to 18936. [2023-11-29 01:54:18,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18936 states, 18934 states have (on average 1.469736981092215) internal successors, (27828), 18935 states have internal predecessors, (27828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:18,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18936 states to 18936 states and 27828 transitions. [2023-11-29 01:54:18,506 INFO L78 Accepts]: Start accepts. Automaton has 18936 states and 27828 transitions. Word has length 73 [2023-11-29 01:54:18,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:18,507 INFO L495 AbstractCegarLoop]: Abstraction has 18936 states and 27828 transitions. [2023-11-29 01:54:18,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:18,507 INFO L276 IsEmpty]: Start isEmpty. Operand 18936 states and 27828 transitions. [2023-11-29 01:54:18,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 01:54:18,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:18,509 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] [2023-11-29 01:54:18,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 01:54:18,509 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:18,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:18,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1436271534, now seen corresponding path program 1 times [2023-11-29 01:54:18,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:18,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734029763] [2023-11-29 01:54:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:18,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:18,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:18,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734029763] [2023-11-29 01:54:18,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734029763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:18,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:18,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:54:18,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737327289] [2023-11-29 01:54:18,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:18,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:18,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:18,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:18,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:18,586 INFO L87 Difference]: Start difference. First operand 18936 states and 27828 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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 01:54:19,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:19,116 INFO L93 Difference]: Finished difference Result 36332 states and 52806 transitions. [2023-11-29 01:54:19,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:19,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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 01:54:19,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:19,133 INFO L225 Difference]: With dead ends: 36332 [2023-11-29 01:54:19,133 INFO L226 Difference]: Without dead ends: 18938 [2023-11-29 01:54:19,144 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 01:54:19,145 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 45 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3097 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 01:54:19,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3097 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:54:19,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18938 states. [2023-11-29 01:54:19,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18938 to 18936. [2023-11-29 01:54:19,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18936 states, 18934 states have (on average 1.4541037287419456) internal successors, (27532), 18935 states have internal predecessors, (27532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18936 states to 18936 states and 27532 transitions. [2023-11-29 01:54:19,755 INFO L78 Accepts]: Start accepts. Automaton has 18936 states and 27532 transitions. Word has length 74 [2023-11-29 01:54:19,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:19,755 INFO L495 AbstractCegarLoop]: Abstraction has 18936 states and 27532 transitions. [2023-11-29 01:54:19,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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 01:54:19,755 INFO L276 IsEmpty]: Start isEmpty. Operand 18936 states and 27532 transitions. [2023-11-29 01:54:19,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 01:54:19,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:19,758 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] [2023-11-29 01:54:19,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 01:54:19,758 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:19,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:19,759 INFO L85 PathProgramCache]: Analyzing trace with hash -702984806, now seen corresponding path program 1 times [2023-11-29 01:54:19,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:19,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385714212] [2023-11-29 01:54:19,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:19,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:19,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:19,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385714212] [2023-11-29 01:54:19,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385714212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:19,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:19,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:54:19,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281786344] [2023-11-29 01:54:19,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:19,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:19,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:19,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:19,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:19,825 INFO L87 Difference]: Start difference. First operand 18936 states and 27532 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:20,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:20,037 INFO L93 Difference]: Finished difference Result 25406 states and 36809 transitions. [2023-11-29 01:54:20,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:20,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2023-11-29 01:54:20,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:20,045 INFO L225 Difference]: With dead ends: 25406 [2023-11-29 01:54:20,045 INFO L226 Difference]: Without dead ends: 8012 [2023-11-29 01:54:20,056 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 01:54:20,057 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 39 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3094 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 01:54:20,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3094 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:54:20,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2023-11-29 01:54:20,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 8005. [2023-11-29 01:54:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8005 states, 8003 states have (on average 1.5015619142821441) internal successors, (12017), 8004 states have internal predecessors, (12017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:20,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8005 states to 8005 states and 12017 transitions. [2023-11-29 01:54:20,313 INFO L78 Accepts]: Start accepts. Automaton has 8005 states and 12017 transitions. Word has length 75 [2023-11-29 01:54:20,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:20,313 INFO L495 AbstractCegarLoop]: Abstraction has 8005 states and 12017 transitions. [2023-11-29 01:54:20,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:20,313 INFO L276 IsEmpty]: Start isEmpty. Operand 8005 states and 12017 transitions. [2023-11-29 01:54:20,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 01:54:20,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:20,315 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] [2023-11-29 01:54:20,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 01:54:20,316 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:20,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:20,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1790502652, now seen corresponding path program 1 times [2023-11-29 01:54:20,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:20,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164183694] [2023-11-29 01:54:20,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:20,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:20,404 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:20,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:20,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164183694] [2023-11-29 01:54:20,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164183694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:20,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:20,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:54:20,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016645276] [2023-11-29 01:54:20,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:20,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:20,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:20,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:20,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:20,407 INFO L87 Difference]: Start difference. First operand 8005 states and 12017 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 01:54:20,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:20,533 INFO L93 Difference]: Finished difference Result 11233 states and 16595 transitions. [2023-11-29 01:54:20,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:20,534 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 01:54:20,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:20,537 INFO L225 Difference]: With dead ends: 11233 [2023-11-29 01:54:20,538 INFO L226 Difference]: Without dead ends: 4783 [2023-11-29 01:54:20,542 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 01:54:20,542 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 41 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3073 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 01:54:20,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3073 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:54:20,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2023-11-29 01:54:20,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 4781. [2023-11-29 01:54:20,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4781 states, 4779 states have (on average 1.5461393596986817) internal successors, (7389), 4780 states have internal predecessors, (7389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:20,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4781 states to 4781 states and 7389 transitions. [2023-11-29 01:54:20,635 INFO L78 Accepts]: Start accepts. Automaton has 4781 states and 7389 transitions. Word has length 76 [2023-11-29 01:54:20,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:20,635 INFO L495 AbstractCegarLoop]: Abstraction has 4781 states and 7389 transitions. [2023-11-29 01:54:20,635 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 01:54:20,635 INFO L276 IsEmpty]: Start isEmpty. Operand 4781 states and 7389 transitions. [2023-11-29 01:54:20,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 01:54:20,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:20,636 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] [2023-11-29 01:54:20,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 01:54:20,637 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:20,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:20,637 INFO L85 PathProgramCache]: Analyzing trace with hash -626519094, now seen corresponding path program 1 times [2023-11-29 01:54:20,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:20,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516044336] [2023-11-29 01:54:20,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:20,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:20,724 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:20,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:20,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516044336] [2023-11-29 01:54:20,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516044336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:20,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:20,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:54:20,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814010733] [2023-11-29 01:54:20,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:20,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:20,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:20,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:20,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:20,726 INFO L87 Difference]: Start difference. First operand 4781 states and 7389 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 01:54:20,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:20,805 INFO L93 Difference]: Finished difference Result 6397 states and 9653 transitions. [2023-11-29 01:54:20,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:20,805 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 01:54:20,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:20,808 INFO L225 Difference]: With dead ends: 6397 [2023-11-29 01:54:20,808 INFO L226 Difference]: Without dead ends: 3171 [2023-11-29 01:54:20,811 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 01:54:20,812 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 38 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3058 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 01:54:20,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3058 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:54:20,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2023-11-29 01:54:20,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3169. [2023-11-29 01:54:20,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 3167 states have (on average 1.6106725607830754) internal successors, (5101), 3168 states have internal predecessors, (5101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:20,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 5101 transitions. [2023-11-29 01:54:20,867 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 5101 transitions. Word has length 78 [2023-11-29 01:54:20,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:20,868 INFO L495 AbstractCegarLoop]: Abstraction has 3169 states and 5101 transitions. [2023-11-29 01:54:20,868 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 01:54:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 5101 transitions. [2023-11-29 01:54:20,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 01:54:20,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:20,869 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] [2023-11-29 01:54:20,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 01:54:20,870 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:20,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:20,870 INFO L85 PathProgramCache]: Analyzing trace with hash 439495192, now seen corresponding path program 1 times [2023-11-29 01:54:20,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:20,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884744420] [2023-11-29 01:54:20,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:20,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:20,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:20,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884744420] [2023-11-29 01:54:20,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884744420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:20,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:20,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:54:20,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044146024] [2023-11-29 01:54:20,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:20,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:20,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:20,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:20,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:20,937 INFO L87 Difference]: Start difference. First operand 3169 states and 5101 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:20,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:20,979 INFO L93 Difference]: Finished difference Result 3979 states and 6221 transitions. [2023-11-29 01:54:20,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:20,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-11-29 01:54:20,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:20,983 INFO L225 Difference]: With dead ends: 3979 [2023-11-29 01:54:20,983 INFO L226 Difference]: Without dead ends: 2365 [2023-11-29 01:54:20,984 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 01:54:20,985 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 35 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3043 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 01:54:20,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3043 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:54:20,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2023-11-29 01:54:21,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2363. [2023-11-29 01:54:21,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2361 states have (on average 1.6814908936891149) internal successors, (3970), 2362 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3970 transitions. [2023-11-29 01:54:21,020 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3970 transitions. Word has length 80 [2023-11-29 01:54:21,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:21,021 INFO L495 AbstractCegarLoop]: Abstraction has 2363 states and 3970 transitions. [2023-11-29 01:54:21,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:21,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3970 transitions. [2023-11-29 01:54:21,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 01:54:21,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:21,022 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:54:21,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 01:54:21,022 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:21,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:21,022 INFO L85 PathProgramCache]: Analyzing trace with hash 397937126, now seen corresponding path program 1 times [2023-11-29 01:54:21,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:21,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957141906] [2023-11-29 01:54:21,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:21,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:21,140 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:54:21,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:21,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957141906] [2023-11-29 01:54:21,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957141906] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:21,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442030178] [2023-11-29 01:54:21,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:21,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:21,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:21,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:21,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:54:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:21,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:54:21,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:54:21,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:54:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:54:21,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442030178] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:54:21,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:54:21,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-11-29 01:54:21,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134675440] [2023-11-29 01:54:21,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:54:21,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:54:21,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:21,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:54:21,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:54:21,800 INFO L87 Difference]: Start difference. First operand 2363 states and 3970 transitions. Second operand has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:21,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:21,941 INFO L93 Difference]: Finished difference Result 4306 states and 6572 transitions. [2023-11-29 01:54:21,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:54:21,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 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 82 [2023-11-29 01:54:21,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:21,945 INFO L225 Difference]: With dead ends: 4306 [2023-11-29 01:54:21,945 INFO L226 Difference]: Without dead ends: 3498 [2023-11-29 01:54:21,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 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 01:54:21,946 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 3042 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3042 SdHoareTripleChecker+Valid, 3254 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:21,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3042 Valid, 3254 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:54:21,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2023-11-29 01:54:22,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 3431. [2023-11-29 01:54:22,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3429 states have (on average 1.551764362787985) internal successors, (5321), 3430 states have internal predecessors, (5321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:22,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5321 transitions. [2023-11-29 01:54:22,018 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5321 transitions. Word has length 82 [2023-11-29 01:54:22,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:22,019 INFO L495 AbstractCegarLoop]: Abstraction has 3431 states and 5321 transitions. [2023-11-29 01:54:22,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:22,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5321 transitions. [2023-11-29 01:54:22,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-29 01:54:22,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:22,020 INFO L195 NwaCegarLoop]: trace histogram [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 01:54:22,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:54:22,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 01:54:22,221 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:22,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:22,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1527392688, now seen corresponding path program 1 times [2023-11-29 01:54:22,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:22,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026531259] [2023-11-29 01:54:22,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:22,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:23,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:23,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:23,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026531259] [2023-11-29 01:54:23,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026531259] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:23,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044407507] [2023-11-29 01:54:23,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:23,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:23,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:23,251 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:23,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:54:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:23,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:54:23,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:23,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:54:25,335 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:25,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044407507] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:54:25,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:54:25,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 31 [2023-11-29 01:54:25,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109183539] [2023-11-29 01:54:25,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:54:25,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 01:54:25,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:25,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 01:54:25,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2023-11-29 01:54:25,338 INFO L87 Difference]: Start difference. First operand 3431 states and 5321 transitions. Second operand has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:28,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:28,822 INFO L93 Difference]: Finished difference Result 11132 states and 15206 transitions. [2023-11-29 01:54:28,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 01:54:28,823 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 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 83 [2023-11-29 01:54:28,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:28,830 INFO L225 Difference]: With dead ends: 11132 [2023-11-29 01:54:28,830 INFO L226 Difference]: Without dead ends: 9351 [2023-11-29 01:54:28,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=911, Invalid=3781, Unknown=0, NotChecked=0, Total=4692 [2023-11-29 01:54:28,834 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 20841 mSDsluCounter, 6504 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20841 SdHoareTripleChecker+Valid, 8002 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:28,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20841 Valid, 8002 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:54:28,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9351 states. [2023-11-29 01:54:29,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9351 to 8777. [2023-11-29 01:54:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8777 states, 8775 states have (on average 1.390883190883191) internal successors, (12205), 8776 states have internal predecessors, (12205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:29,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8777 states to 8777 states and 12205 transitions. [2023-11-29 01:54:29,105 INFO L78 Accepts]: Start accepts. Automaton has 8777 states and 12205 transitions. Word has length 83 [2023-11-29 01:54:29,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:29,105 INFO L495 AbstractCegarLoop]: Abstraction has 8777 states and 12205 transitions. [2023-11-29 01:54:29,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:29,106 INFO L276 IsEmpty]: Start isEmpty. Operand 8777 states and 12205 transitions. [2023-11-29 01:54:29,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-29 01:54:29,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:29,107 INFO L195 NwaCegarLoop]: trace histogram [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 01:54:29,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:54:29,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 01:54:29,308 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:29,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:29,308 INFO L85 PathProgramCache]: Analyzing trace with hash 577648048, now seen corresponding path program 1 times [2023-11-29 01:54:29,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:29,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740190505] [2023-11-29 01:54:29,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:29,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:29,700 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:29,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:29,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740190505] [2023-11-29 01:54:29,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740190505] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:29,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079511983] [2023-11-29 01:54:29,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:29,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:29,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:29,701 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:29,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:54:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:29,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:54:29,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:30,404 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:30,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:54:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:31,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079511983] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:54:31,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:54:31,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-11-29 01:54:31,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553621577] [2023-11-29 01:54:31,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:54:31,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 01:54:31,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:31,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 01:54:31,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:54:31,298 INFO L87 Difference]: Start difference. First operand 8777 states and 12205 transitions. Second operand has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:32,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:32,317 INFO L93 Difference]: Finished difference Result 16301 states and 21859 transitions. [2023-11-29 01:54:32,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:54:32,318 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 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 83 [2023-11-29 01:54:32,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:32,325 INFO L225 Difference]: With dead ends: 16301 [2023-11-29 01:54:32,325 INFO L226 Difference]: Without dead ends: 9517 [2023-11-29 01:54:32,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 01:54:32,329 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 9188 mSDsluCounter, 6334 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9188 SdHoareTripleChecker+Valid, 7844 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:32,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9188 Valid, 7844 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:54:32,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9517 states. [2023-11-29 01:54:32,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9517 to 8633. [2023-11-29 01:54:32,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8633 states, 8631 states have (on average 1.3823427181091414) internal successors, (11931), 8632 states have internal predecessors, (11931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:32,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8633 states to 8633 states and 11931 transitions. [2023-11-29 01:54:32,589 INFO L78 Accepts]: Start accepts. Automaton has 8633 states and 11931 transitions. Word has length 83 [2023-11-29 01:54:32,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:32,590 INFO L495 AbstractCegarLoop]: Abstraction has 8633 states and 11931 transitions. [2023-11-29 01:54:32,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:32,590 INFO L276 IsEmpty]: Start isEmpty. Operand 8633 states and 11931 transitions. [2023-11-29 01:54:32,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-29 01:54:32,591 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:32,592 INFO L195 NwaCegarLoop]: trace histogram [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 01:54:32,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:54:32,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 01:54:32,792 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:32,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:32,793 INFO L85 PathProgramCache]: Analyzing trace with hash -900611408, now seen corresponding path program 1 times [2023-11-29 01:54:32,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:32,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160429952] [2023-11-29 01:54:32,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:32,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:33,217 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:33,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:33,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160429952] [2023-11-29 01:54:33,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160429952] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:33,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362252296] [2023-11-29 01:54:33,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:33,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:33,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:33,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:33,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:54:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:33,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:54:33,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:33,900 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:33,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:54:34,848 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:34,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362252296] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:54:34,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:54:34,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-11-29 01:54:34,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856011331] [2023-11-29 01:54:34,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:54:34,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 01:54:34,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:34,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 01:54:34,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:54:34,850 INFO L87 Difference]: Start difference. First operand 8633 states and 11931 transitions. Second operand has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:35,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:35,908 INFO L93 Difference]: Finished difference Result 16898 states and 22474 transitions. [2023-11-29 01:54:35,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 01:54:35,909 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-11-29 01:54:35,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:35,942 INFO L225 Difference]: With dead ends: 16898 [2023-11-29 01:54:35,942 INFO L226 Difference]: Without dead ends: 10953 [2023-11-29 01:54:35,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 01:54:35,945 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 11876 mSDsluCounter, 6541 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11876 SdHoareTripleChecker+Valid, 8070 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:35,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11876 Valid, 8070 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:54:35,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10953 states. [2023-11-29 01:54:36,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10953 to 10435. [2023-11-29 01:54:36,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10435 states, 10433 states have (on average 1.3610658487491614) internal successors, (14200), 10434 states have internal predecessors, (14200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:36,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10435 states to 10435 states and 14200 transitions. [2023-11-29 01:54:36,262 INFO L78 Accepts]: Start accepts. Automaton has 10435 states and 14200 transitions. Word has length 83 [2023-11-29 01:54:36,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:36,263 INFO L495 AbstractCegarLoop]: Abstraction has 10435 states and 14200 transitions. [2023-11-29 01:54:36,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:36,263 INFO L276 IsEmpty]: Start isEmpty. Operand 10435 states and 14200 transitions. [2023-11-29 01:54:36,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-29 01:54:36,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:36,264 INFO L195 NwaCegarLoop]: trace histogram [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 01:54:36,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:54:36,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 01:54:36,465 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:36,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:36,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1230460860, now seen corresponding path program 1 times [2023-11-29 01:54:36,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:36,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561826477] [2023-11-29 01:54:36,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:36,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:36,841 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:36,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:36,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561826477] [2023-11-29 01:54:36,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561826477] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:36,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938898661] [2023-11-29 01:54:36,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:36,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:36,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:36,842 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:36,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:54:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:36,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:54:36,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:37,564 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:37,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:54:38,690 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:38,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938898661] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:54:38,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:54:38,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-11-29 01:54:38,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310860064] [2023-11-29 01:54:38,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:54:38,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 01:54:38,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:38,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 01:54:38,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-11-29 01:54:38,693 INFO L87 Difference]: Start difference. First operand 10435 states and 14200 transitions. Second operand has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:42,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:42,200 INFO L93 Difference]: Finished difference Result 35341 states and 45821 transitions. [2023-11-29 01:54:42,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 01:54:42,201 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2023-11-29 01:54:42,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:42,221 INFO L225 Difference]: With dead ends: 35341 [2023-11-29 01:54:42,221 INFO L226 Difference]: Without dead ends: 26850 [2023-11-29 01:54:42,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=937, Invalid=3485, Unknown=0, NotChecked=0, Total=4422 [2023-11-29 01:54:42,229 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 22070 mSDsluCounter, 8060 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22070 SdHoareTripleChecker+Valid, 9566 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:42,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22070 Valid, 9566 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:54:42,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26850 states. [2023-11-29 01:54:43,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26850 to 25602. [2023-11-29 01:54:43,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25602 states, 25600 states have (on average 1.2882421875) internal successors, (32979), 25601 states have internal predecessors, (32979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25602 states to 25602 states and 32979 transitions. [2023-11-29 01:54:43,187 INFO L78 Accepts]: Start accepts. Automaton has 25602 states and 32979 transitions. Word has length 84 [2023-11-29 01:54:43,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:43,187 INFO L495 AbstractCegarLoop]: Abstraction has 25602 states and 32979 transitions. [2023-11-29 01:54:43,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:43,187 INFO L276 IsEmpty]: Start isEmpty. Operand 25602 states and 32979 transitions. [2023-11-29 01:54:43,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 01:54:43,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:43,189 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:54:43,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 01:54:43,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 01:54:43,389 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:43,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:43,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1688504568, now seen corresponding path program 1 times [2023-11-29 01:54:43,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:43,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467422794] [2023-11-29 01:54:43,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:43,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:46,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:46,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467422794] [2023-11-29 01:54:46,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467422794] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:46,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862648634] [2023-11-29 01:54:46,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:46,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:46,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:46,699 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:46,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:54:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:46,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 01:54:46,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:48,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:54:49,364 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:49,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862648634] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:54:49,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:54:49,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 11, 11] total 50 [2023-11-29 01:54:49,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455321997] [2023-11-29 01:54:49,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:54:49,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 01:54:49,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:49,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 01:54:49,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2277, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 01:54:49,367 INFO L87 Difference]: Start difference. First operand 25602 states and 32979 transitions. Second operand has 50 states, 50 states have (on average 4.68) internal successors, (234), 50 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:39,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:39,567 INFO L93 Difference]: Finished difference Result 44760 states and 56404 transitions. [2023-11-29 01:55:39,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2023-11-29 01:55:39,567 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.68) internal successors, (234), 50 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-29 01:55:39,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:39,595 INFO L225 Difference]: With dead ends: 44760 [2023-11-29 01:55:39,595 INFO L226 Difference]: Without dead ends: 35813 [2023-11-29 01:55:39,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31644 ImplicationChecksByTransitivity, 42.5s TimeCoverageRelationStatistics Valid=12521, Invalid=68419, Unknown=0, NotChecked=0, Total=80940 [2023-11-29 01:55:39,616 INFO L413 NwaCegarLoop]: 1713 mSDtfsCounter, 26146 mSDsluCounter, 35495 mSDsCounter, 0 mSdLazyCounter, 9179 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26146 SdHoareTripleChecker+Valid, 37208 SdHoareTripleChecker+Invalid, 9358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 9179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:39,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26146 Valid, 37208 Invalid, 9358 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [179 Valid, 9179 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-11-29 01:55:39,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35813 states. [2023-11-29 01:55:40,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35813 to 24939. [2023-11-29 01:55:40,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24939 states, 24937 states have (on average 1.2855596102177487) internal successors, (32058), 24938 states have internal predecessors, (32058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:40,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24939 states to 24939 states and 32058 transitions. [2023-11-29 01:55:40,897 INFO L78 Accepts]: Start accepts. Automaton has 24939 states and 32058 transitions. Word has length 86 [2023-11-29 01:55:40,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:40,898 INFO L495 AbstractCegarLoop]: Abstraction has 24939 states and 32058 transitions. [2023-11-29 01:55:40,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.68) internal successors, (234), 50 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:40,898 INFO L276 IsEmpty]: Start isEmpty. Operand 24939 states and 32058 transitions. [2023-11-29 01:55:40,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 01:55:40,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:40,899 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:55:40,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:55:41,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 01:55:41,100 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:41,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:41,100 INFO L85 PathProgramCache]: Analyzing trace with hash 301365880, now seen corresponding path program 1 times [2023-11-29 01:55:41,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:41,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208453652] [2023-11-29 01:55:41,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:41,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:41,628 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:55:41,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:41,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208453652] [2023-11-29 01:55:41,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208453652] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:55:41,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527853757] [2023-11-29 01:55:41,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:41,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:41,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:41,630 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:55:41,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:55:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:41,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 01:55:41,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:45,118 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:55:45,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:55:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:55:48,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527853757] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:55:48,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:55:48,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 23] total 53 [2023-11-29 01:55:48,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560138956] [2023-11-29 01:55:48,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:55:48,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-29 01:55:48,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:48,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-29 01:55:48,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=2424, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 01:55:48,884 INFO L87 Difference]: Start difference. First operand 24939 states and 32058 transitions. Second operand has 53 states, 53 states have (on average 4.226415094339623) internal successors, (224), 53 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:28,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:28,810 INFO L93 Difference]: Finished difference Result 127417 states and 159645 transitions. [2023-11-29 01:57:28,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 299 states. [2023-11-29 01:57:28,811 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.226415094339623) internal successors, (224), 53 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-29 01:57:28,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:28,915 INFO L225 Difference]: With dead ends: 127417 [2023-11-29 01:57:28,915 INFO L226 Difference]: Without dead ends: 115214 [2023-11-29 01:57:28,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 348 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53519 ImplicationChecksByTransitivity, 89.1s TimeCoverageRelationStatistics Valid=19156, Invalid=102994, Unknown=0, NotChecked=0, Total=122150 [2023-11-29 01:57:28,943 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 23197 mSDsluCounter, 28125 mSDsCounter, 0 mSdLazyCounter, 5084 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23197 SdHoareTripleChecker+Valid, 29704 SdHoareTripleChecker+Invalid, 5266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 5084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:28,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23197 Valid, 29704 Invalid, 5266 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [182 Valid, 5084 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-29 01:57:29,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115214 states. [2023-11-29 01:57:30,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115214 to 25820. [2023-11-29 01:57:30,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25820 states, 25818 states have (on average 1.2828259353939113) internal successors, (33120), 25819 states have internal predecessors, (33120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25820 states to 25820 states and 33120 transitions. [2023-11-29 01:57:30,991 INFO L78 Accepts]: Start accepts. Automaton has 25820 states and 33120 transitions. Word has length 86 [2023-11-29 01:57:30,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:30,991 INFO L495 AbstractCegarLoop]: Abstraction has 25820 states and 33120 transitions. [2023-11-29 01:57:30,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.226415094339623) internal successors, (224), 53 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:30,991 INFO L276 IsEmpty]: Start isEmpty. Operand 25820 states and 33120 transitions. [2023-11-29 01:57:30,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 01:57:30,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:30,992 INFO L195 NwaCegarLoop]: trace histogram [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 01:57:30,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:57:31,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:57:31,193 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:31,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:31,193 INFO L85 PathProgramCache]: Analyzing trace with hash -537853704, now seen corresponding path program 1 times [2023-11-29 01:57:31,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:31,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886222419] [2023-11-29 01:57:31,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:31,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:31,894 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:57:31,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:31,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886222419] [2023-11-29 01:57:31,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886222419] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:31,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245657889] [2023-11-29 01:57:31,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:31,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:31,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:31,895 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:57:31,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:57:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:32,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 01:57:32,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:57:32,761 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:57:32,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:57:34,020 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:57:34,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245657889] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:57:34,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:57:34,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 15] total 35 [2023-11-29 01:57:34,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514735551] [2023-11-29 01:57:34,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:57:34,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 01:57:34,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:34,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 01:57:34,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1037, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 01:57:34,022 INFO L87 Difference]: Start difference. First operand 25820 states and 33120 transitions. Second operand has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:41,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:41,915 INFO L93 Difference]: Finished difference Result 43752 states and 55513 transitions. [2023-11-29 01:57:41,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-29 01:57:41,916 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-11-29 01:57:41,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:41,936 INFO L225 Difference]: With dead ends: 43752 [2023-11-29 01:57:41,936 INFO L226 Difference]: Without dead ends: 28014 [2023-11-29 01:57:41,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1851 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1873, Invalid=6137, Unknown=0, NotChecked=0, Total=8010 [2023-11-29 01:57:41,946 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 9044 mSDsluCounter, 24538 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9044 SdHoareTripleChecker+Valid, 26072 SdHoareTripleChecker+Invalid, 1620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:41,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9044 Valid, 26072 Invalid, 1620 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:57:41,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28014 states. [2023-11-29 01:57:44,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28014 to 26865. [2023-11-29 01:57:44,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26865 states, 26863 states have (on average 1.2796039161672188) internal successors, (34374), 26864 states have internal predecessors, (34374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:44,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26865 states to 26865 states and 34374 transitions. [2023-11-29 01:57:44,112 INFO L78 Accepts]: Start accepts. Automaton has 26865 states and 34374 transitions. Word has length 87 [2023-11-29 01:57:44,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:44,112 INFO L495 AbstractCegarLoop]: Abstraction has 26865 states and 34374 transitions. [2023-11-29 01:57:44,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:44,112 INFO L276 IsEmpty]: Start isEmpty. Operand 26865 states and 34374 transitions. [2023-11-29 01:57:44,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 01:57:44,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:44,117 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:57:44,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:57:44,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:44,318 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:44,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:44,318 INFO L85 PathProgramCache]: Analyzing trace with hash -279339457, now seen corresponding path program 1 times [2023-11-29 01:57:44,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:44,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494143764] [2023-11-29 01:57:44,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:44,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:57:44,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:44,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494143764] [2023-11-29 01:57:44,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494143764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:44,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:44,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:57:44,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504713440] [2023-11-29 01:57:44,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:44,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:57:44,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:44,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:57:44,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:57:44,533 INFO L87 Difference]: Start difference. First operand 26865 states and 34374 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:51,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:51,928 INFO L93 Difference]: Finished difference Result 30622 states and 41372 transitions. [2023-11-29 01:57:51,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:57:51,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2023-11-29 01:57:51,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:51,950 INFO L225 Difference]: With dead ends: 30622 [2023-11-29 01:57:51,950 INFO L226 Difference]: Without dead ends: 29118 [2023-11-29 01:57:51,954 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 01:57:51,954 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 2352 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4791 mSolverCounterSat, 1179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2352 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 5970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1179 IncrementalHoareTripleChecker+Valid, 4791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:51,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2352 Valid, 812 Invalid, 5970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1179 Valid, 4791 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-29 01:57:51,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29118 states. [2023-11-29 01:57:53,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29118 to 29118. [2023-11-29 01:57:53,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29118 states, 29116 states have (on average 1.2695081741997527) internal successors, (36963), 29117 states have internal predecessors, (36963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:53,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29118 states to 29118 states and 36963 transitions. [2023-11-29 01:57:53,815 INFO L78 Accepts]: Start accepts. Automaton has 29118 states and 36963 transitions. Word has length 133 [2023-11-29 01:57:53,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:53,816 INFO L495 AbstractCegarLoop]: Abstraction has 29118 states and 36963 transitions. [2023-11-29 01:57:53,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:53,816 INFO L276 IsEmpty]: Start isEmpty. Operand 29118 states and 36963 transitions. [2023-11-29 01:57:53,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-29 01:57:53,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:53,820 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:57:53,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 01:57:53,820 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:53,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:53,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1948015120, now seen corresponding path program 1 times [2023-11-29 01:57:53,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:53,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463406922] [2023-11-29 01:57:53,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:53,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:54,797 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 30 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:57:54,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:54,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463406922] [2023-11-29 01:57:54,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463406922] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:57:54,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578100283] [2023-11-29 01:57:54,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:54,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:54,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:54,799 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:57:54,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:57:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:54,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:57:54,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:57:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 26 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:57:56,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:57:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:57:58,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578100283] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:57:58,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:57:58,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-11-29 01:57:58,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519665020] [2023-11-29 01:57:58,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:57:58,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 01:57:58,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:58,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 01:57:58,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1135, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 01:57:58,284 INFO L87 Difference]: Start difference. First operand 29118 states and 36963 transitions. Second operand has 36 states, 36 states have (on average 10.472222222222221) internal successors, (377), 35 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:58:06,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:06,280 INFO L93 Difference]: Finished difference Result 48276 states and 60830 transitions. [2023-11-29 01:58:06,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-11-29 01:58:06,281 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 10.472222222222221) internal successors, (377), 35 states have internal predecessors, (377), 0 states have call successors, (0), 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 134 [2023-11-29 01:58:06,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:06,304 INFO L225 Difference]: With dead ends: 48276 [2023-11-29 01:58:06,304 INFO L226 Difference]: Without dead ends: 30682 [2023-11-29 01:58:06,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2111 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1644, Invalid=7668, Unknown=0, NotChecked=0, Total=9312 [2023-11-29 01:58:06,312 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 22573 mSDsluCounter, 18534 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22573 SdHoareTripleChecker+Valid, 20043 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:06,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22573 Valid, 20043 Invalid, 2023 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 1962 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:58:06,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30682 states. [2023-11-29 01:58:08,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30682 to 29118. [2023-11-29 01:58:08,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29118 states, 29116 states have (on average 1.2583115812611623) internal successors, (36637), 29117 states have internal predecessors, (36637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:58:08,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29118 states to 29118 states and 36637 transitions. [2023-11-29 01:58:08,333 INFO L78 Accepts]: Start accepts. Automaton has 29118 states and 36637 transitions. Word has length 134 [2023-11-29 01:58:08,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:08,333 INFO L495 AbstractCegarLoop]: Abstraction has 29118 states and 36637 transitions. [2023-11-29 01:58:08,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 10.472222222222221) internal successors, (377), 35 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:58:08,333 INFO L276 IsEmpty]: Start isEmpty. Operand 29118 states and 36637 transitions. [2023-11-29 01:58:08,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 01:58:08,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:08,339 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:08,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:58:08,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:08,540 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:08,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:08,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1363002568, now seen corresponding path program 1 times [2023-11-29 01:58:08,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:08,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246099921] [2023-11-29 01:58:08,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:08,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 40 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:09,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:09,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246099921] [2023-11-29 01:58:09,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246099921] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:58:09,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953811426] [2023-11-29 01:58:09,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:09,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:09,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:58:09,416 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:58:09,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:58:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:09,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:58:09,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:58:10,315 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 42 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:10,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:58:13,421 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 40 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:13,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953811426] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:58:13,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:58:13,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-11-29 01:58:13,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374018118] [2023-11-29 01:58:13,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:58:13,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 01:58:13,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:13,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 01:58:13,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2023-11-29 01:58:13,423 INFO L87 Difference]: Start difference. First operand 29118 states and 36637 transitions. Second operand has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 26 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:58:18,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:18,040 INFO L93 Difference]: Finished difference Result 90864 states and 113127 transitions. [2023-11-29 01:58:18,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 01:58:18,040 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 26 states have internal predecessors, (282), 0 states have call successors, (0), 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 135 [2023-11-29 01:58:18,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:18,101 INFO L225 Difference]: With dead ends: 90864 [2023-11-29 01:58:18,101 INFO L226 Difference]: Without dead ends: 67246 [2023-11-29 01:58:18,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=505, Invalid=1751, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 01:58:18,118 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 13681 mSDsluCounter, 9308 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13681 SdHoareTripleChecker+Valid, 10844 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:18,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13681 Valid, 10844 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:58:18,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67246 states. [2023-11-29 01:58:22,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67246 to 56530. [2023-11-29 01:58:22,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56530 states, 56528 states have (on average 1.2359715539201812) internal successors, (69867), 56529 states have internal predecessors, (69867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:58:22,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56530 states to 56530 states and 69867 transitions. [2023-11-29 01:58:22,367 INFO L78 Accepts]: Start accepts. Automaton has 56530 states and 69867 transitions. Word has length 135 [2023-11-29 01:58:22,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:22,367 INFO L495 AbstractCegarLoop]: Abstraction has 56530 states and 69867 transitions. [2023-11-29 01:58:22,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 26 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:58:22,367 INFO L276 IsEmpty]: Start isEmpty. Operand 56530 states and 69867 transitions. [2023-11-29 01:58:22,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-29 01:58:22,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:22,375 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:22,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:58:22,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:22,576 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:22,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:22,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1491251620, now seen corresponding path program 1 times [2023-11-29 01:58:22,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:22,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006407302] [2023-11-29 01:58:22,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:22,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 31 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:23,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:23,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006407302] [2023-11-29 01:58:23,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006407302] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:58:23,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18646926] [2023-11-29 01:58:23,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:23,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:23,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:58:23,482 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:58:23,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:58:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:23,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 01:58:23,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:58:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:26,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:58:31,439 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:31,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18646926] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:58:31,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:58:31,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 53 [2023-11-29 01:58:31,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494647837] [2023-11-29 01:58:31,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:58:31,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-29 01:58:31,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:31,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-29 01:58:31,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2543, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 01:58:31,441 INFO L87 Difference]: Start difference. First operand 56530 states and 69867 transitions. Second operand has 53 states, 53 states have (on average 7.433962264150943) internal successors, (394), 53 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:00:26,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:26,379 INFO L93 Difference]: Finished difference Result 160994 states and 194175 transitions. [2023-11-29 02:00:26,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 364 states. [2023-11-29 02:00:26,380 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 7.433962264150943) internal successors, (394), 53 states have internal predecessors, (394), 0 states have call successors, (0), 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 136 [2023-11-29 02:00:26,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:26,522 INFO L225 Difference]: With dead ends: 160994 [2023-11-29 02:00:26,522 INFO L226 Difference]: Without dead ends: 139994 [2023-11-29 02:00:26,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 412 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70525 ImplicationChecksByTransitivity, 91.6s TimeCoverageRelationStatistics Valid=17382, Invalid=153600, Unknown=0, NotChecked=0, Total=170982 [2023-11-29 02:00:26,548 INFO L413 NwaCegarLoop]: 1707 mSDtfsCounter, 29141 mSDsluCounter, 40813 mSDsCounter, 0 mSdLazyCounter, 9129 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29141 SdHoareTripleChecker+Valid, 42520 SdHoareTripleChecker+Invalid, 9554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 9129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:26,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29141 Valid, 42520 Invalid, 9554 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [425 Valid, 9129 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2023-11-29 02:00:26,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139994 states. [2023-11-29 02:00:34,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139994 to 81518. [2023-11-29 02:00:34,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81518 states, 81516 states have (on average 1.2249006330045635) internal successors, (99849), 81517 states have internal predecessors, (99849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:00:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81518 states to 81518 states and 99849 transitions. [2023-11-29 02:00:34,496 INFO L78 Accepts]: Start accepts. Automaton has 81518 states and 99849 transitions. Word has length 136 [2023-11-29 02:00:34,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:34,496 INFO L495 AbstractCegarLoop]: Abstraction has 81518 states and 99849 transitions. [2023-11-29 02:00:34,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 7.433962264150943) internal successors, (394), 53 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:00:34,497 INFO L276 IsEmpty]: Start isEmpty. Operand 81518 states and 99849 transitions. [2023-11-29 02:00:34,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-29 02:00:34,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:34,506 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:34,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 02:00:34,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:00:34,707 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:34,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:34,707 INFO L85 PathProgramCache]: Analyzing trace with hash 104112932, now seen corresponding path program 1 times [2023-11-29 02:00:34,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:34,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531192079] [2023-11-29 02:00:34,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:34,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 49 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:00:35,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:35,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531192079] [2023-11-29 02:00:35,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531192079] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:00:35,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785851550] [2023-11-29 02:00:35,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:35,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:00:35,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:00:35,337 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:00:35,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 02:00:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:35,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 02:00:35,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:00:36,281 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 57 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:00:36,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:00:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 49 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:00:38,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785851550] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:00:38,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:00:38,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-11-29 02:00:38,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89965251] [2023-11-29 02:00:38,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:00:38,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 02:00:38,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:38,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 02:00:38,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-11-29 02:00:38,490 INFO L87 Difference]: Start difference. First operand 81518 states and 99849 transitions. Second operand has 27 states, 27 states have (on average 10.407407407407407) internal successors, (281), 26 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:00:46,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:46,273 INFO L93 Difference]: Finished difference Result 123274 states and 150626 transitions. [2023-11-29 02:00:46,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 02:00:46,273 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.407407407407407) internal successors, (281), 26 states have internal predecessors, (281), 0 states have call successors, (0), 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 136 [2023-11-29 02:00:46,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:46,340 INFO L225 Difference]: With dead ends: 123274 [2023-11-29 02:00:46,340 INFO L226 Difference]: Without dead ends: 72602 [2023-11-29 02:00:46,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=352, Invalid=1288, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 02:00:46,362 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 11914 mSDsluCounter, 10888 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11914 SdHoareTripleChecker+Valid, 12419 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:46,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11914 Valid, 12419 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:00:46,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72602 states. [2023-11-29 02:00:53,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72602 to 71526. [2023-11-29 02:00:53,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71526 states, 71524 states have (on average 1.218318326715508) internal successors, (87139), 71525 states have internal predecessors, (87139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:00:53,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71526 states to 71526 states and 87139 transitions. [2023-11-29 02:00:53,830 INFO L78 Accepts]: Start accepts. Automaton has 71526 states and 87139 transitions. Word has length 136 [2023-11-29 02:00:53,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:53,830 INFO L495 AbstractCegarLoop]: Abstraction has 71526 states and 87139 transitions. [2023-11-29 02:00:53,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.407407407407407) internal successors, (281), 26 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:00:53,831 INFO L276 IsEmpty]: Start isEmpty. Operand 71526 states and 87139 transitions. [2023-11-29 02:00:53,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-29 02:00:53,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:53,839 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:00:53,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 02:00:54,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:00:54,040 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:54,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:54,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1091004872, now seen corresponding path program 1 times [2023-11-29 02:00:54,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:54,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754947358] [2023-11-29 02:00:54,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:54,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:56,336 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 13 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:00:56,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:56,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754947358] [2023-11-29 02:00:56,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754947358] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:00:56,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675212925] [2023-11-29 02:00:56,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:56,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:00:56,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:00:56,338 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:00:56,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 02:00:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:56,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 02:00:56,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:00:59,092 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 22 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:00:59,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:01:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 22 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:01:03,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675212925] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:01:03,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:01:03,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 20, 19] total 67 [2023-11-29 02:01:03,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626468218] [2023-11-29 02:01:03,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:01:03,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-11-29 02:01:03,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:01:03,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-11-29 02:01:03,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=4166, Unknown=0, NotChecked=0, Total=4422 [2023-11-29 02:01:03,962 INFO L87 Difference]: Start difference. First operand 71526 states and 87139 transitions. Second operand has 67 states, 67 states have (on average 5.880597014925373) internal successors, (394), 67 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:05:11,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:05:11,001 INFO L93 Difference]: Finished difference Result 308705 states and 371492 transitions. [2023-11-29 02:05:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 530 states. [2023-11-29 02:05:11,001 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.880597014925373) internal successors, (394), 67 states have internal predecessors, (394), 0 states have call successors, (0), 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 137 [2023-11-29 02:05:11,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:05:11,281 INFO L225 Difference]: With dead ends: 308705 [2023-11-29 02:05:11,281 INFO L226 Difference]: Without dead ends: 268187 [2023-11-29 02:05:11,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 593 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151464 ImplicationChecksByTransitivity, 195.9s TimeCoverageRelationStatistics Valid=30998, Invalid=322432, Unknown=0, NotChecked=0, Total=353430 [2023-11-29 02:05:11,323 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 31845 mSDsluCounter, 49068 mSDsCounter, 0 mSdLazyCounter, 13160 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31845 SdHoareTripleChecker+Valid, 50695 SdHoareTripleChecker+Invalid, 13739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 13160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:05:11,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31845 Valid, 50695 Invalid, 13739 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [579 Valid, 13160 Invalid, 0 Unknown, 0 Unchecked, 18.5s Time] [2023-11-29 02:05:11,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268187 states. [2023-11-29 02:05:26,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268187 to 103413. [2023-11-29 02:05:26,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103413 states, 103411 states have (on average 1.2057227954472929) internal successors, (124685), 103412 states have internal predecessors, (124685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:05:26,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103413 states to 103413 states and 124685 transitions. [2023-11-29 02:05:26,417 INFO L78 Accepts]: Start accepts. Automaton has 103413 states and 124685 transitions. Word has length 137 [2023-11-29 02:05:26,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:05:26,418 INFO L495 AbstractCegarLoop]: Abstraction has 103413 states and 124685 transitions. [2023-11-29 02:05:26,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 5.880597014925373) internal successors, (394), 67 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:05:26,418 INFO L276 IsEmpty]: Start isEmpty. Operand 103413 states and 124685 transitions. [2023-11-29 02:05:26,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 02:05:26,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:05:26,429 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:05:26,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 02:05:26,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 02:05:26,630 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:05:26,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:05:26,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1695630128, now seen corresponding path program 1 times [2023-11-29 02:05:26,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:05:26,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214234585] [2023-11-29 02:05:26,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:05:26,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:05:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:29,525 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:05:29,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:05:29,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214234585] [2023-11-29 02:05:29,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214234585] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:05:29,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041454314] [2023-11-29 02:05:29,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:05:29,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:05:29,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:05:29,527 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:05:29,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 02:05:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:29,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 02:05:29,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:05:31,507 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:05:31,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:05:36,069 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:05:36,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041454314] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:05:36,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:05:36,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 17, 18] total 64 [2023-11-29 02:05:36,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545351492] [2023-11-29 02:05:36,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:05:36,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-11-29 02:05:36,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:05:36,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-11-29 02:05:36,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=3808, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 02:05:36,071 INFO L87 Difference]: Start difference. First operand 103413 states and 124685 transitions. Second operand has 64 states, 64 states have (on average 5.859375) internal successors, (375), 64 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:05,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:07:05,333 INFO L93 Difference]: Finished difference Result 174562 states and 208403 transitions. [2023-11-29 02:07:05,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2023-11-29 02:07:05,334 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.859375) internal successors, (375), 64 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-11-29 02:07:05,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:07:05,436 INFO L225 Difference]: With dead ends: 174562 [2023-11-29 02:07:05,436 INFO L226 Difference]: Without dead ends: 124485 [2023-11-29 02:07:05,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18340 ImplicationChecksByTransitivity, 66.2s TimeCoverageRelationStatistics Valid=7464, Invalid=51342, Unknown=0, NotChecked=0, Total=58806 [2023-11-29 02:07:05,457 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 31913 mSDsluCounter, 44554 mSDsCounter, 0 mSdLazyCounter, 7460 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31913 SdHoareTripleChecker+Valid, 46105 SdHoareTripleChecker+Invalid, 7696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 7460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:07:05,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31913 Valid, 46105 Invalid, 7696 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [236 Valid, 7460 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-11-29 02:07:05,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124485 states. [2023-11-29 02:07:19,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124485 to 106283. [2023-11-29 02:07:19,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106283 states, 106281 states have (on average 1.2045897197053095) internal successors, (128025), 106282 states have internal predecessors, (128025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106283 states to 106283 states and 128025 transitions. [2023-11-29 02:07:19,980 INFO L78 Accepts]: Start accepts. Automaton has 106283 states and 128025 transitions. Word has length 138 [2023-11-29 02:07:19,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:07:19,981 INFO L495 AbstractCegarLoop]: Abstraction has 106283 states and 128025 transitions. [2023-11-29 02:07:19,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.859375) internal successors, (375), 64 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:19,981 INFO L276 IsEmpty]: Start isEmpty. Operand 106283 states and 128025 transitions. [2023-11-29 02:07:19,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 02:07:19,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:07:19,991 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:19,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 02:07:20,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 02:07:20,191 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:07:20,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:20,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2045930824, now seen corresponding path program 1 times [2023-11-29 02:07:20,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:20,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247406678] [2023-11-29 02:07:20,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:20,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:22,492 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 13 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:22,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:22,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247406678] [2023-11-29 02:07:22,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247406678] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:07:22,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190365234] [2023-11-29 02:07:22,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:22,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:22,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:07:22,494 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:07:22,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41d1286f-5ac9-4833-8b1c-dcbf22fc5720/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 02:07:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:22,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 02:07:22,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:07:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 50 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:24,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:07:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 50 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:28,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190365234] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:07:28,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:07:28,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 18, 17] total 62 [2023-11-29 02:07:28,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112676602] [2023-11-29 02:07:28,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:07:28,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-11-29 02:07:28,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:28,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-11-29 02:07:28,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=3499, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 02:07:28,678 INFO L87 Difference]: Start difference. First operand 106283 states and 128025 transitions. Second operand has 62 states, 62 states have (on average 6.145161290322581) internal successors, (381), 62 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)